According to a new theory argued by Anders Sandberg, Eric Drexler and Toby Ord, the answer to the Fermi Paradox may be simple: humanity is alone in the Universe. Credit: ESA/Gaia/DPAC
For as little as 1$ monthly, become a Patron & support our strange little channel: Secureteam is your source for reporting the best in new UFO sighting news, and the strange activity happening on and off of our planet. Email me YOUR footage and help us continue the good search for disclosure! : ?E-mail me your ideas & footage ?Secureteam Shirts! ?Twitter: ?Facebook: Send mail to: Secureteam 1712 11th St. Portsmouth, OH 45662 Box 372 Intro Music: Spellbound by Kevin Macleod Outro Music: "Dark Trap" by rh_music For business inquiries or concerns regarding footage used in this video, please contact me at: and I'll get back to you within 48 hours. Thanks!
The Drake Equation, a mathematical formula for the probability of finding life or advanced civilizations in the universe. Credit: University of Rochester
Fraser Cain Published on Jun 20, 2013 In this short explainer video, Universe Today publisher investigates the riddle of the Fermi Paradox; if the Universe is big, and old, and there are countless habitable worlds, why do we see no evidence of life? Where are all the aliens?
Frank Drake writing his famous equation on a white board. Credit: seti.org
Is anybody out there? Anybody at all? Credit: UCLA SETI Group/Yuri Beletsky, Carnegie Las Campanas Observatory
Published on Apr 23, 2016 The search for near-Earth-size exoplanets is on. Although 1000's of exoplanets have been discovered, few are near-Earth-size. But that doesn't mean they don't exist. Now, teams at JPL are working on creative new technologies to not only discover these elusive planets but expand our search for signs of life beyond our solar system. NASA 360 joins Stuart Shaklan of NASA's Jet Propulsion Laboratory as he discusses future of exoplanet discovery. To view the original full version talk from which this video was created please visit Category People & Blogs License Standard YouTube License
From SCOOP.IT In the search for life beyond Earth, false alarms abound. Researchers have generally considered, and rejected, claims ranging from a 1970s report of life on Mars to the 1990s discovery of fossilized space microbes in a meteorite. Now, inspired by the detection of thousands of planets beyond the Solar System, NASA has started a fresh effort to learn how to recognize extraterrestrial life. The goal is to understand what gases alien life might produce and how Earth-bound astronomers might detect such biosignatures in light passing through the atmospheres of planets trillions of kilometers away (see Searching for alien life). The effort comes at a crucial time, as astronomers grapple with how to interpret exoplanet data from the next generation of telescopes. Some scientists are working to understand how nature could produce archetypal biosignature gases, such as oxygen, in the absence of living organisms. Others are trying to think as expansively as possible about the types of biochemistry that could sustain life. "We could fool ourselves into thinking a lifeless planet has life or we could be missing life because we don't really understand the context of what could be produced on another planet", says Sarah Rugheimer, an astronomer at the University of St Andrews, UK. Detecting a biosignature gas is just the first step to understanding what could be happening on an exoplanet. Each world has its own combination of physical and chemical factors that may or may not lead to life, says Victoria Meadows, an astronomer at the University of Washington in Seattle. Planets are hard, and we shouldn't think they are all going to be the same or reveal their secrets very easily, she says. A planet's environment is key. Some Earth-sized planets orbit M dwarf stars the most common type of star in the Galaxy at the right distance to harbor liquid water. But Meadows' collaborators have shown that photo-chemical reactions can send water into the planet's atmosphere and then break off its hydrogen, which escapes into space. What's left is a thick blanket of oxygen that might seem as if it came from living organisms, but results from a run-away greenhouse effect. Published July 26, 2016 Written by Dr. Stefan Gruenwald
Streamed live on Apr 26, 2017 Date: Wednesday, April 26, 2017 - 10:00am Location: 2318 Rayburn House Office Building Advances in the Search for Life Witnesses Dr. Thomas Zurbuchen, Associate Administrator, Science Mission Directorate, National Aeronautics and Space Administration (NASA) Dr. Adam Burgasser, Professor of Physics, University of California, San Diego and UCSD Center for Astrophysics and Space Science; Fulbright Scholar Dr. James Kasting, Chair, Planning Committee, Workshop on the Search for Life Across Space and Time, National Academies of Science, Engineering, and Medicine; Evan Pugh Professor of Geosciences, Pennsylvania State University Dr. Seth Shostak, Senior Astronomer, SETI Institute Category Science & Technology License Standard YouTube License
NASA's Kepler space telescope was the first agency mission capable of detecting Earth-size planets. Credit: NASA/Wendy Stenzel
What's this? this is the original speculative message sent out in November 1974 and the response(?) found as a crop glyph in southern England.
The Arecibo Message is Answered by Aliens in a Mind Blowing Crop Circle! The Arecibo message was beamed into space a single time (not repeated) via frequency modulated radio waves at a ceremony to mark the remodeling of the Arecibo radio telescope on 16 November 1974.
The Kinds of Advanced Alien Civilizations (infographic)
Futurism saved to Infographics Alien or Natural: Strangest Sounds & Signals Detected from Space Space is filled with noise; inaudible frequencies of radiation that carry the secrets of the universe. The question is, are they alien or are they natural?
The term METI was coined by Russian scientist Alexander Zaitsev, who sought to draw a distinction between SETI and METI. As he explained in a 2006 paper on the subject: The science known as SETI deals with searching for messages from aliens. METI science deals with the creation of messages to aliens. Thus, SETI and METI proponents have quite different perspectives. SETI scientists are in a position to address only the local question - does Active SETI make sense? In other words, would it be reasonable, for SETI success, to transmit with the object of attracting ETI's attention? In contrast to Active SETI, METI pursues not a local and lucrative impulse, but a more global and unselfish one to overcome the Great Silence in the Universe, bringing to our extraterrestrial neighbors the long-expected annunciation - You are not alone!
Artist's impression of how the surface of a planet orbiting a red dwarf star may appear. The planet is in the habitable zone so liquid water exists. However, low levels of ultraviolet radiation from the star have prevented or severely impeded chemical processes thought to be required for life to emerge. This causes the planet to be devoid of life. Credit: M. Weiss/CfA
Artist's impression of the planet orbiting a red dwarf star. Credit: ESO/M. Kornmesser
Artist's impression of the surface of the planet Proxima B orbiting the red dwarf star Proxima Centauri. The double star Alpha Centauri AB is visible to the upper right of Proxima itself. Credit: ESO
Artist's impression of a sunset seen from the surface of an Earth-like exoplanet. Credit:ESO/L. Calada
Transit Photometry, which detects planets by measuring small changes in a star's lightcurve, is the most widely-used means of exoplanet detection. Credit: NASA/Tim Pyle
Artist's impression of an extra-solar planet transiting its star. Credit: QUB Astrophysics Research Center
NASA's Kepler space telescope was the first agency mission capable of detecting Earth-size planets. Credit: NASA/Wendy Stenzel
Published on Nov 30, 2015 All of the Kepler multi-planet systems (1705 planets in 685 systems as of 24 November 2015) on the same scale as the Solar System (the dashed lines). The size of the orbits are all to scale, but the size of the planets are not. For example, Jupiter is actually 11x larger than Earth, but that scale makes Earth-size planets almost invisible (or Jupiters annoyingly large). The orbits are all synchronized such that Kepler observed a planet transit every time it hits an angle of 0 degrees (the 3 o'clock position on a clock). Planet colors are based on their approximate equilibrium temperatures, as shown in the legend. Source code to make your own can be found here: Category Science & Technology
Uploaded on Feb 28, 2012 Visualization of the planetary systems discovered by Kepler (Batalha et al.), i.e. those targets with more than one transiting object. There are 885 planet candidates in 361 systems, doubling the number of systems in the original Kepler Orrery. In this video, * orbits are to scale with respect to each other, and planets are to scale with respect to each other (a different scale from the orbits). * The colors are in order of semi-major axis. Two-planet systems (242 in all) have a yellow outer planet; 3-planet (85) green, 4-planet (25) light blue, 5-planet (8) dark blue, 6-planet (1, Kepler-11) purple. * At the end of the video the catalog numbers appear (Kepler Object of Interest, KOI). Category Science & Technology License Creative Commons Attribution license (reuse allowed) Remix this video
Uploaded on Feb 3, 2011 All the multiple-planet systems discovered by Kepler as of 2/2/2011; orbits go through quarters Q0-Q2. Hot colors to Cool colors (Red to yellow to green to cyan to blue to gray) are Big planets to Smaller planets, relative to the other planets in the system. Category Science & Technology License Standard YouTube License
Published on Nov 30, 2015 All of the Kepler multi-planet systems (1705 planets in 685 systems as of 24 November 2015) on the same scale as the Solar System (the dashed lines). The size of the orbits are all to scale, but the size of the planets are not. For example, Jupiter is actually 11x larger than Earth, but that scale makes Earth-size planets almost invisible (or Jupiters annoyingly large). The orbits are all synchronized such that Kepler observed a planet transit every time it hits an angle of 0 degrees (the 3 o'clock position on a clock). Planet colors are based on their approximate equilibrium temperatures, as shown in the legend. Source code to make your own can be found here The previous version (Kepler Orrery III by Dan Fabrycky) can be seen here: https://www.youtube.com/watch?v=gnZVv... Category Science & Technology License Standard YouTube License
In case you need a reminder that the solar system was a harsh place to grow up, the early Earth looks like it was in the middle of a shooting gallery in this model. The map that you see above shows a scenario for where researchers believe asteroids struck our planet about four billion to 4.5 billion years ago, which is very early in the Earth's five-billion-year history.
Ann Yin Complex Organic Molecules Discovered in Infant Star System: Hints that Prebiotic Chemistry Is Universal Atacama Large Millimeter/submillimeter Array (ALMA), reveals that the protoplanetary disk surrounding the million-year-old star MWC 480 is brimming with methyl cyanide (CH3CN), a complex carbon-based molecule. Both this molecule and its simpler cousin hydrogen cyanide (HCN) were found in the cold outer reaches of the starï¿½s newly formed disk, in a region that astronomers believe is analogous to our own Kuiper Belt -- the realm of icy planetesimals and comets beyond Neptune.
Magnetic field on a terrestrial planet HARVARD-SMITHSONIAN CENTER FOR ASTROPHYSICS Nearly four billion years ago, life arose on Earth. Life appeared because our planet had a rocky surface, liquid water, and a blanketing atmosphere. But life thrived thanks to another necessary ingredient: the presence of a protective magnetic field.
Artist’s representation of a constellation of accelerator-transmitters in orbit around a neutron star. Credit: A.A. Jackson/Triton Systems LLC
This image shows a visual representation of one of the highest-energy neutrino detections superimposed on a view of the IceCube Lab at the South Pole. Credit: IceCube Collaboration
Image: This is Figure 6 from the paper. Caption: A schematic illustration of a possible neutrino accelerator-transmitter, the accelerator and lens (nothing to scale). Credit: A. A. Jackson.
Abstract The gravitational field of the sun acts as a spherical lens to magnify the intensity of radiation from a distant source along a semi-infinite focal line. A spacecraft anywhere on that line in principle could observe, eavesdrop, and communicate over interstellar distances, using equipment comparable in size and power with what is now used for interplanetary distances. If one neglects coronal effects, the maximum magnification factor for coherent radiation is inversely proportional to the wavelength, being 100 million at 1 millimeter. The principal difficulties are that the nearest point on the focal half-line is about 550 times the sun-earth distance, separate spacecraft would be needed to work with each stellar system of interest, and the solar corona would severely limit the intensity of coherent radiation while also restricting operations to relatively short wavelengths.
Published on Nov 11, 2014 A Journalistic Perspective on SETI-Related Message Composition The selection of content for SETI-related communications (sometimes known as CETI, for Communication with Extraterrestrial Intelligence) in deep space has been orchestrated largely by scientists and other academics. But human civilization largely chronicles its own activities through journalism and the mass media. The potential contributions of a journalistic perspective to SETI-related message composition are generally ignored. This paper examines how criteria of perception and reportage practiced by journalism could influence SETI-related communications. Category Science & Technology License Standard YouTube License
UCLA students describe their experience collecting and analyzing data from a large radio telescope to search for extraterrestrial intelligence.Authored by Kevin Lu, filmed by Emmanuel Masongsong, and featuring the UCLA Spring 2017 SETI class. Category Science & Technology License Standard YouTube License
The Green Bank Telescope is the world's largest, fully-steerable telescope, which is currently being used in a new SETI (Search for Extraterrestrial Intelligence) attempt to look for possible alien radio signals from Tabby's Star. Credit: NRAO/AUI/NSF
An artist's impression of the completed Square Kilometer Array, which will be constructed in South Africa and Western Australia. Credit: SKA Organisation A huge telescope array will allow scientists to conduct the most sensitive and exhaustive search for signs of alien civilizations to date when it comes online, the project's backers say.
Scientists are doing everything they could to find proof of living aliens, even eavesdropping. (Image used for representation only.) bertomic / Pixabay CC BY 1.0 Researchers on a hunt for extraterrestrial intelligence have reportedly taken the help of a powerful radio telescope to tune in to a neighboring star system, which is located relatively near to our planet. The aim of the scientists is to detect any sound, howsoever weak, that could signal the existence of an alien civilization. Astronomers from the SETI Institute used the Allen Telescope Array (ATA) in California to eavesdrop on Trappist 1, a red dwarf star system that has at least three habitable exoplanets to see if it is transmitting radio waves. Last year Kepler had detected a mysterious transit signal from a star known as Tabby's star, officially called KIC 8462852. The transit, which basically measures the dimness in the brightness of a star when a planet orbits it, was nothing like ever seen before because the brightness dimmed by 20 percent. Scientists were puzzled by the occurrence, and suggested that a swarm of comets may have been the cause of the strange signal.
NOTE TO OUR READERS: When this video was released earlier today, it featured the voice of the late Carl Sagan speaking about the Search for Extraterrestrial Intelligence (SETI). The Carl Sagan folks Druyan-Sagan Associates in Ithaca, New York have asked that the voiceover be removed and want 6-8 weeks to evaluate whether it can be included here. Maybe Sagan's voice will return to enhance this video, but, in the meantime, enjoy it. It's still an awesome video. This morning, video producer Gavin Heffernan dropped EarthSky a note, saying: enclosed is a link to DISHDANCE, a SETI [Search for Extraterrestrial Intelligence] tribute and timelapse medley of radio astronomy facilities This timelapse was filmed as part of our ongoing crowdfunded quest to explore the effects and dangers of urban light pollution in contrast with some of the most incredible Dark Sky Preserves in North America. This video was shot by my Skyglow partner Harun Mehmedinovic (www.Bloodhoney.com) and myself (SunchaserPictures.com). More credits: Music by Tom Boddy, music track Thoughtful Reflections. Edited by: Harun Mehmedinovic Dishdance was filmed at Very Large Array Observatory in New Mexico, Owens Valley Observatory in California, and Green Bank Observatory in West Virginia
An Murchison Widefield Array radio telescope tile photographed with a "breakaway" hill in the background. Image: MWA The first modern Search for ExtraTerrestrial Intelligence (SETI) experiment at low radio frequencies is underway, as researchers utilise the capabilities of the Murchison Widefield Array (MWA) to search the skies for the tell-tale signs of an advanced civilisation. SETI experiments using radio telescopes first started in 1960 when Cornell University astronomer Frank Drake used the Green Bank telescope in West Virginia to examine two nearby stars. Since then a number of programmes, such as the Million-channel ExtraTerrestrial Assay (META) programme and SERENDIP (Search for Extraterrestrial Radio Emissions from Nearby Developed Intelligent Populations) plus offshoots of this experiment, have continued to search the skies ever since.
A study published in October 2016 reported the detection of odd light pulses coming from 234 of 2.5 million stars observed by the Sloan Digital Sky Survey's 2.5-meter telescope in New Mexico (pictured here). These pulses are consistent with signals that intelligent aliens might produce, the study authors claimed. Credit: SDSS/Fermilab Visual Media Services/NASA Strange pulses of cosmic light might be signals from hundreds of different alien civilizations or just the latest false alarm in the tortuous search for ET. This month, astrophysicists Ermanno Borra and Eric Trottier, both from Laval University in Quebec, announced that they had spotted mysterious light signals coming from 234 different stars in our Milky Way galaxy. These pulses match the profile of signals that Borra, in a 2012 paper, predicted intelligent aliens might use to get our attention, the authors wrote.
Of course, there are whole websites devoted to arguing the case for long-lost civilizations on the deserts of Mars, complete with heavily re-processed photos that owe more to the imagination of contemporary humans than to the ingenuity of extraterrestrial architects and engineers. Yet there is also some serious and well considered work being done in the field of what has been called SETA (Search for Extraterrestrial Artifacts).
The object certainly resembles a fossilized femur, but the odds that it's anything other than a weird-looking rock are, well, astronomical. Over the years, people eyeing pictures from Mars have claimed to have seen everything from an iguana to a finger to weird faces. But NASA hasn't been too impressed.
Video Caption: The sparks that appear on the baseball-sized rock (starting at :17) result from the laser of the ChemCam instrument on NASA's Curiosity Mars rover hitting the rock. Credit: NASA/JPL-Caltech/MSSS ChemCam is used to determine the composition of Martian rocks and soils at a distance of up to 25 feet (8 meters) yielding preliminary data for the scientists and engineers to decide if a target warrants up close investigation and in rare cases sampling and drilling activities.
Astronomers have taken a close-up time lapse image of the fast-rotating star zeta Andromedae. Starspots can be seen clearly. Credit: Rachael Roettenbacher, John Monnier, et al. Astronomers at the University of Michigan have taken close-up pictures of a nearby star that show starspots, sunspots outside our solar system. The researchers have used a technique called interferometry to build essentially the first time lapse of zeta Andromedae across one of its 18-day rotations. Zeta Andromedae is about 181 light-years away in the northern constellation Andromeda. A paper on the findings is published in the current issue of Nature. See more
Berkley seti institute
Technosearch is a web-based tool that keeps track of SETI papers from 1960 until the present day and allows observers from all over the world to submit their own searches, keeping us current with the times. Technosearch keeps track of the following: the title of the search paper (or the popular name of the search), the name of the observers, the date of the search, the objects observed, the facility at which the search took place, the size of the telescope used, the sensitivity of the instrument used, the resolving power of the instrument, the time that was spent observing each object, the reference where the search can be found in print, the link where the search can be found online, and comments that explain the search strategy and a place where the observer can make note of whatever else they would like to report. Technosearch hosts many SETI related papers that were hosted in old obscure journals and are hard to access otherwise along with papers that were stuck behind payment barriers. The search for technosignatures (evidence that a technology producing civilization existed) will likely take many generations to come to any sort of meaningful conclusion, and in order to search in new places requires that we know where we have already searched. This tool exists to give the astronomers of tomorrow a way to look into the past and see where and how we searched today.
This is a list containing the SETI searches looking for signals in the Radio part of the EM spectrum. This list contains the first SETI observations written in the 1960s up to present day searches being conducted by teams all over the world. To see the bibliographic information, click on the title of the search you're interested in.
This is a list showing the SETI searches that was conducted in the optical and near infrared spectrum of the EM spectrum. This list contains the results from searches conducted in 1977 up to present day research. To see the bibliographic information, click on the title of the search you're interested in.
This is a list of the searches that are more concerned with going through - usually large - sets of data that has been collected by a survey project prior. To see the bibliographic information, click on the title of the search you're interested in.
SETI@home: New forum, and a new contributor. We have added a new forum called SETI Perspectives that will showcase thoughts on SETI and related topics from people not directly connected with the Berkeley SETI group. Richard Lawn, Ph.D is our first contributor with an article about 'Oumuamua, the first object we've seen that convincingly originates from outside from outside the solar system. We hope have a long collaboration with Richard. Please welcome him into the SETI@home family.
Jon M. Jenkins - Jon is the Analysis Lead for Kepler, which means that he heads up a group of about two dozen scientists and programmers who designed and built the software that makes this dramatic search for other worlds possible. With a brightness precision of 20 parts per million, Kepler should be able to discover planets that are the same size as the rocky, inner orbs of our own solar system. By making an inventory of such worlds, Kepler will answer one of the most intriguing questions in astrobiology: are Earth-size planets abundant or rare?
A group of SETI astronomers led by Duncan Forgan, and including myself and BSRC director Andrew Siemion, has published a revised version of the Rio Scale . The Rio Scale is designed to predict the public impact a signal would have, like the Richter scale does for earthquakes. The prior version of the Rio scale, in addition to being rarely used, tended to overestimate the impact of low quality or low significance reports of detection. Now all we have to do is convince other SETI astronomers and the press to use it.
Published on May 11, 2015 Professor Shelley Wright is an astrophysicist, recently at the University of Toronto, and now faculty at the University of California, San Diego. Here she talks about her research into infrared and visible light SETI. She explains why if ETs are trying to communicate over long distances, they may be using IR lasers to do it. She was a postdoctoral researcher at UC Berkeley from 2009 - 2011 and continues to collaborate with Berkeley SETI Research Center scientists. Learn more about Shelley : Follow us on Twitter Facebook: Category Science & Technology License Standard YouTube License
Published on Nov 10, 2014 For over a half century, astronomers involved in the Search for Extraterrestrial Intelligence (SETI) have scanned the skies for signals from distant civilizations. Would humans be able to decode information-rich signals from another planet? Could we create a "universal language" that would be meaningful to an independently evolved civilization? To help answer these questions, on November 10-11 2014 the SETI Institute convened a multidisciplinary, international workshop at its headquarters in Mountain View, California. Speakers from six countries drew on disciplines ranging from astronomy and mathematics, to anthropology and linguistics, as they debated the best ways to create meaningful messages. While the two-day workshop was closed to the public, all talks will be posted on the SETI Institute's YouTube channel. On the day following the workshop, several of the speakers will summarize the key ideas discussed as part of the SETI Institute's public weekly colloquium series, held on November 12, at 12:00 noon. Category Science & Technology License Standard YouTube License
Published on Nov 3, 2015 Zuhra Abdurashidova is the newest staff member at Berkeley SETI Research Center. Joining us in June, Zuhra graduated from UC Berkeley with a degree in mechanical engineering. Zuhra is working on high-speed data processing, and management of the new Breakthrough Listen data coming from the Green Bank Telescope. Zuhra grew up in Uzbekistan, and is a serious musician as well as one of the biggest Star Trek fans around. Follow us on Twitter and Facebook Follow us on facebook Category Science & Technology License Standard YouTube License
Published on Jan 22, 2016 Kevin Luong joined Berkeley SETI Research Center as an intern in summer 2015. Kevin worked with David Anderson to revise the NTPCKR system to run on cloud computing servers. There are still a few kinks to sort out, but if it works, this should let us run our data base through NTPCKR in a few weeks instead of more then a year. Kevin transferred to UCLA in the fall, but is continuing to work with SETI to explore cloud computing for other projects. We'll be launching an expanded undergraduate internship program later this year. Follow us on social media for more details when they become available Twitter Facebook Category Science & Technology License Standard YouTube License
Berkeley SETI Research Center's Dr. Steve Croft, in collaboration with colleagues at UC Museum of Paleontology and the Space Sciences Laboratory's "Multiverse" education group have put together an educational site focusing on the conditions needed for life to arise in the Universe. Although aimed primarily at high school teachers and their students, this material may be of interest to broader audiences. In the "Research Profiles" section of the site you can also find an interview with BSRC's Dr. Eric Korpela, Director of SETI@home.
Published on Jul 27, 2016 David MacMahon is a research astronomer with Berkeley SETI Research Center. Dave works on several projects at BSRC, including Breakthrough Listen, designing many of the computer systems we use to process data collected from our telescopes. If you've ever been curious what hardware is required to search for ET, check out this tour of Berkeley SETI behind the scenes. Category Science & Technology License Standard YouTube License
Published on Aug 25, 2016 See some of the highlights of work at Berkeley SETI Research Center. Hear about SETI@home and the Breakthrough Listen optical and radio searches, visit the Green Bank Telescope, see our computing hardware, meet our undergraduate research interns, and preview some of our upcoming video pieces in this five minute teaser. Category Science & Technology License Standard YouTube License
Published on Apr 10, 2017 Take a tour of the Breakthrough Listen instrument at the Green Bank Observatory with Berkeley SETI Research Center engineer Dave MacMahon, and hear GBO Director Karen O'Neil talk about a novel solution to cooling equipment in the server room. Since this video was made, the team has added additional compute nodes in the server room, further expanding the huge range of frequencies that Breakthrough Listen can scan for signs of intelligent life in the Universe. Category Science & Technology License Standard YouTube License
Published on Jul 13, 2017 Breakthrough Listen utilizes the 100-meter Green Bank Telescope in West Virginia in the search for signals from intelligent life beyond Earth. In this interview with Green Bank researcher Ryan Lynch, you'll hear about the difficulties of painting the world's largest steerable telescope, how the telescope picks up incredibly faint signals, and what modern convenience Ryan misses most living in the middle of the National Radio Quiet Zone. Berkely Seti Berkley Seti Facebook Twitter Berkley Seti Instagram Berkley Seti Category Science & Technology License Standard YouTube License
The search for life in the solar system and beyond has to date been governed by a model based on what we know about life on Earth (terran life). Most of NASA's mission planning is focused on locations where liquid water is possible and emphasizes searches for structures that resemble cells in terran organisms. It is possible, however, that life exists that is based on chemical reactions that do not involve carbon compounds, that occurs in solvents other than water, or that involves oxidation-reduction reactions without oxygen gas. To assist NASA incorporate this possibility in its efforts to search for life, the NRC was asked to carry out a study to evaluate whether nonstandard biochemistry might support life in solar system and conceivable extrasolar environments, and to define areas to guide research in this area. This book presents an exploration of a limited set of hypothetical chemistries of life, a review of current knowledge concerning key questions or hypotheses about nonterran life, and suggestions for future research.
Image: Strong signal from the direction of HD 164595. â€œRawâ€ record of the signal together with expected shape of the signal for point-like source in the position of HD 164595. Credit: Bursov et al. From the presentation: The estimated probability ~2 X 10-4 to simulate the signal from the direction of the HD164595 by signal-like noise is small, therefore HD164595 is good candidate SETI. Permanent monitoring of this target is needed. All of which makes excellent sense. We can't claim the detection of an extraterrestrial civilization from this observation. What we can say is that the signal is interesting and merits intense scrutiny.
Image: The RATAN-600 radio telescope in Zelenchukskaya. Credit: Wikimedia Commons. Here I'm drawing on a presentation forwarded to me by Claudio Maccone, from which I learn that the team behind the detection was led by N.N. Bursov and included L.N. Filippova, V.V. Filippov, L.M. Gindilis, A.D. Panov, E.S. Starikov, J. Wilson, as well as Claudio Maccone himself, the latter a familiar figure on Centauri Dreams. The work is to be discussed at a meeting of the IAA SETI Permanent Committee, to be held during the 67th International Astronautical Congress (IAC) in Guadalajara, Mexico, on Tuesday, September 27th, 2016,
The super telescopes are coming, enormous ground and space-based observatories that'll let us directly observe the atmospheres of distant worlds. We know there's life on Earth, and our atmosphere tells the tale, so can we do the same thing with extrasolar planets? It turns out, coming up with a single biosignature, a chemical in the atmosphere that tells you that yes, absolutely, there's life on that world, is really tough. Sign up to my weekly email newsletter: Support us at:Support us at: : More stories at Follow us on Twitter: @universetoday Like us on Facebook: Google+ - Instagram - Team: Fraser Cain - @fcain / firstname.lastname@example.org /Karla Thompson - @karlaii Chad Weber - Chloe Cain - Instagram: @chloegwen2001 References: The James Webb Telescope Review of Bio signatures (pdf) I've got to admit, I've been pretty bad for this in the past. In old episodes of Astronomy Cast and the Weekly Space Hangout, even here in the Guide to Space, I've said that if we could just sample the atmosphere of a distant world, we could say with conviction if there's life there. Just detect ozone in the atmosphere, or methane, or even pollution and you could say, there's life there. Well, future Fraser is here to correct past Fraser. While I admire his naive enthusiasm for the search for aliens, it turns out, as always, things are going to be more difficult than we previously thought. Astrobiologists are actually struggling to figure out a single smoking gun biosignature that could be used to say there's life out there. And that's because natural processes seem to have clever ways of fooling us. What are some potential biosignatures, why are they problematic, and what will it take to get that confirmation?
Artist concept Sunset on Gliese_667
The supertelescopes are coming, enormous ground and space-based observatories that’ll let us directly observe the atmospheres of distant worlds. We know there’s life on Earth, and our atmosphere tells the tale, so can we do the same thing with extrasolar planets? It turns out, coming up with a single biosignature, a chemical in the atmosphere that tells you that yes, absolutely, there’s life on that world, is really tough. A HREF="https://www.universetoday.com/newsletter">Sign up to my weekly email newsletter: Support us at:Support us at: : More stories at Follow us on Twitter: @universetoday Like us on Facebook: Google+ - Instagram - Team: Fraser Cain - @fcain / email@example.com /Karla Thompson - @karlaii Chad Weber - Chloe Cain - Instagram: @chloegwen2001 References: First Map of an Exoplanet Atmosphere Warm Neptune' Has Unexpectedly Primitive Atmosphere Probing Seven Worlds with NASA's James Webb Space Telescope
I’ve got to admit, I’ve been pretty bad for this in the past. In old episodes of Astronomy Cast and the Weekly Space Hangout, even here in the Guide to Space, I’ve said that if we could just sample the atmosphere of a distant world, we could say with conviction if there’s life there. Just detect ozone in the atmosphere, or methane, or even pollution and you could say, “there’s life there.” Well, future Fraser is here to correct past Fraser. While I admire his naive enthusiasm for the search for aliens, it turns out, as always, things are going to be more difficult than we previously thought. Astrobiologists are actually struggling to figure out a single smoking gun biosignature that could be used to say there’s life out there. And that’s because natural processes seem to have clever ways of fooling us. What are some potential biosignatures, why are they problematic, and what will it take to get that confirmation?
Artist’s impression of the nearest super-Earth to our Solar System. Credit: ESO/M. Kornmesser
n the past few decades, the number of planets discovered beyond our Solar System has grown by leaps and bounds. As of October 4th, 2018, a total of 3,869 exoplanets have been confirmed in 2,887 planetary systems, with 638 systems hosting multiple planets. Unfortunately, due to the limitations astronomers have been forced to contend with, the vast majority of these have been detected using indirect methods.
Yes, we are in the era of watching planets orbit other stars. HR 8799 harbors four super-Jupiters orbiting with periods that range from decades to centuries. Motion interpolation was used on 7 images of HR 8799 taken from the Keck Telescope over 7 years to create this image. Read more about it here: This movie was featured as the Astronomy Picture of the Day on Feb 1st, 2017: I made more of these! Check them out here: Credits: Video making & motion interpolation: Jason Wang (UC Berkeley) Data analysis: Christian Marois (NRC Herzberg) Orbit determination: Quinn Konopacky (UCSD) Data Taking: Bruce Macintosh (Stanford), Travis Barman (University of Arizona), Ben Zuckerman (UCLA) Funded by: NASA NExSS Data from the W. M. Keck Observatory We wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain.
Image of a planetary-mass object in orbit around brown dwarf 2M1207, taken by a group of astronomers led by Gael Chauvin in July of 2004. Credit: NaCo/VLT/ESO
False-color composite image taken by the Hubble Space Telescope, showing the orbital motion of the planet Fomalhaut b. Credit: NASA/ESA/P. Kalas (UC Berkeley and SETI Institute)
More space news and info at: - a starshade is a large structure used to block the glare of stars, enabling future space telescopes can take pictures of distant exoplanets.
In 2016, Russian-Israeli billionaire Yuri Milner launched Breakthrough Initiatives, a massive non-profit organization dedicated to the search for extra-terrestrial intelligence (SETI). A key part of their efforts to find evidence of intelligent life is Breakthrough Listen, a $100 million program that is currently conducting a survey of one million of the nearest stars and the 100 nearest galaxies.
The Green Bank Telescope, located in West Virginia. Credit: NRAO
Aerial image of the South African MeerKAT radio telescope, part of the Square Kilometer Array (SKA). Credit: SKA
Is anybody out there? Also, are they communicating using technologies that we might recognize? Credit: UCLA SETI Group/Yuri Beletsky, Carnegie Las Campanas Observatory
To date, astronomers have discovered 4,164 extrasolar planets in 3,085 star systems, with another 5,347 awaiting confirmation. With this many planets available for study, researchers have been able to apply new constraints on how likely habitable planets are. In fact, the latest estimates say there could be 6 billion in the Milky Way alone! Understandably, these discoveries have renewed interest in the Search for Extraterrestrial Intelligence (SETI). But whereas the search for habitable planets is focused on finding evidence of biological processes (aka. “biosignatures”), SETI has historically been focused on evidence of technological activity – aka. “technosignatures.” With a grant from NASA, researchers from the Harvard-Smithsonian Center for Astrophysics (CfA) and the University of Rochester are gearing up for a new study that will look for different kinds of potential technosignatures.
Human activity is a major cause of air pollution, much of which results from industrial processes. Credit: cherwell.org
Visualization of the hole in the ozone layer caused by CFCs. Credit: NPP OMPS/SSAI/Aura OMI/Suomi NPP/NASA/NOAA/DoD
Visualization of the hole in the ozone layer caused by CFCs. Credit: NPP OMPS/SSAI/Aura OMI/Suomi NPP/NASA/NOAA/DoD
Artistic representations of a Clarke exobelt with a portrait of Sir Arthur C. Clarke in the background. Credit: Caro Waro (@carwaro).
Planning ahead is something astronomy and space exploration excels at. Decadal surveys and years of engineering effort for missions give the field a much longer time horizon than many others. In the near future, scientists know there will be plenty of opportunities to search for biosignatures everywhere from nearby ocean worlds (i.e. Titan) to far away potentially habitable exoplanets. But it’s not clear what those biosignatures would look like. After all, currently there is only Earth’s biosphere to study, and it would be unfortunate to miss hints of another just because it didn’t look like those found on Earth. Now a team led by researchers at the Santa Fe Institute (SFI) have come up with a framework that could help scientists look for biosignatures that might be completely different from those found on Earth.
The supertelescopes are coming, enormous ground and space-based observatories that’ll let us directly observe the atmospheres of distant worlds. We know there’s life on Earth, and our atmosphere tells the tale, so can we do the same thing with extrasolar planets? It turns out, coming up with a single biosignature, a chemical in the atmosphere that tells you that yes, absolutely, there’s life on that world, is really tough. Support us at: More stories at: Twitter: @universetoday Facebook: Instagram - Our Book is out! Support us at:Support us at: Follow us on Tumblr: : More stories at Follow us on Twitter: @universetoday Like us on Facebook: Instagram - Team: Fraser Cain - @fcain / firstname.lastname@example.org /Karla Thompson - @karlaii Chad Weber - Chloe Cain - Instagram: @chloegwen2001 References: First Map of an Exoplanet Atmosphere 'Warm Neptune' Has Unexpectedly Primitive Atmosphere Probing Seven Worlds with NASA's James Webb Space Telescope I’ve got to admit, I’ve been pretty bad for this in the past. In old episodes of Astronomy Cast and the Weekly Space Hangout, even here in the Guide to Space, I’ve said that if we could just sample the atmosphere of a distant world, we could say with conviction if there’s life there. Just detect ozone in the atmosphere, or methane, or even pollution and you could say, “there’s life there.” Well, future Fraser is here to correct past Fraser. While I admire his naive enthusiasm for the search for aliens, it turns out, as always, things are going to be more difficult than we previously thought. Astrobiologists are actually struggling to figure out a single smoking gun biosignature that could be used to say there’s life out there. And that’s because natural processes seem to have clever ways of fooling us. What are some potential biosignatures, why are they problematic, and what will it take to get that confirmation?
Example of a power law distribution. Lower values on the x-axis (sizes of particles in this case) lead to large quantities (y-axis). Credit – Hay Kranen / PD / Wikipedia
There are few places in the Solar System which are as fascinating as Saturn’s moon Titan. It’s a world with a thicker atmosphere than Earth. Where it’s so cold that it rains ammonia, forming lakes, rivers and seas. Where water ice forms mountains. Like Europa and Encleadus, Titan could have an interior ocean of liquid water too, a place where there might be life. Titan’s got layers, and fortunately, there’s an awesome new mission in the works to explore it: the Titan Dragonfly mission. Links to episodes I mention: - Drilling under the ice on Europa - Everyday Astronaut talks about Titan Dragonfly Missions to Titan - Audio Podcast version: ITunes: RSS: What Fraser's Watching Playlist: Sign up to my weekly email newsletter: Support us at:Support us at: Follow us on Tumblr: : More stories at Follow us on Twitter: @universetoday Like us on Facebook: Instagram - Team: Fraser Cain - @fcain / email@example.com /Karla Thompson - @karlaii Chad Weber - Chloe Cain - Instagram: @chloegwen2001 References: NASA SOLAR ECPLORATION TITAN NASA SOLAR ECPLORATION CASSINI NASA-USGS Landsat 8 Satellite Pinpoints Coldest Spots on Earth NASA Jet Propulsion Laboratory - Titan NASA's Dragonfly Will Fly Around Titan Looking for Origins, Signs of Life
Zhi-Song Zhang,1, 2, 3, 4 Dan Werthimer,3, 4 Tong-Jie Zhang,5 Jeff Cobb,3, 4 Eric Korpela, 3 David Anderson,3 Vishal Gajjar,3, 4 Ryan Lee,4, 6, 7 Shi-Yu Li,5 Xin Pei,2, 8 Xin-Xin Zhang,1 Shi-Jie Huang,1 Pei Wang,1 Yan Zhu,1 Ran Duan,1 Hai-Yan Zhang,1 Cheng-jin Jin,1 Li-Chun Zhu,1 and Di Li1, 2 1National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China 2University of Chinese Academy of Sciences, Beijing 100049, China 3Space Sciences Laboratory, University of California, Berkeley, Berkeley CA 94720 4Department of Astronomy, University of California Berkeley, Berkeley CA 94720, USA 5Department of Astronomy, Beijing Normal University, Beijing 100875, China 6Department of Physics, University of California Berkeley, Berkeley CA 94720, USA 7Department of Computer Science, University of California Berkeley, Berkeley CA 94720, USA 8Xinjiang Astronomical Observatory, CAS, 150, Science 1-Street, Urumqi, Xinjiang 830011, China ABSTRACT The Search for Extraterrestrial Intelligence (SETI) attempts to address the possibility of the presence of technological civilizations beyond the Earth. Benefiting from high sensitivity, large sky coverage, an innovative feed cabin for China’s Five-hundred-meter Aperture Spherical radio Telescope (FAST), we performed the SETI first observations with FAST’s newly commisioned 19-beam receiver; we report preliminary results in this paper. Using the data stream produced by the SERENDIP VI realtime multibeam SETI spectrometer installed at FAST, as well as its off-line data processing pipelines, we identify and remove four kinds of radio frequency interference(RFI): zone, broadband, multi-beam, and drifting, utilizing the Nebula SETI software pipeline combined with machine learning algorithms. After RFI mitigation, the Nebula pipeline identifies and ranks interesting narrow band candidate ET signals, scoring candidates by the number of times candidate signals have been seen at roughly the same sky position and same frequency, signal strength, proximity to a nearby star or object of interest, along with several other scoring criteria. We show four example candidates groups that demonstrate these RFI mitigation and candidate selection. This preliminary testing on FAST data helps to validate our SETI instrumentation techniques as well as our data processing pipeline.
Dan Werthimer (UC Berkeley, University of Chinese Academy of Sciences) chat about the recent AAS Journal article on SETI observations with FAST, and where we can go from here given the published article. Article: "First SETI Observations with China's Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" "First SETI Observations with China's Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" Dan's website: SETI@Home: BOINC - Compute for Science (including research on the SARS-CoV-2 virus): Citizen Science Projects In Your Online Astronomy Course: The intended audience for the AAS Journal Author Series is active researchers.