Johns Hopkins University (JHU) continues to pad its space community résumé with their interactive map, “The map of the observable Universe”, that takes viewers on a 13.7-billion-year-old tour of the cosmos from the present to the moments after the Big Bang. While JHU is responsible for creating the site, additional contributions were made by NASA, the European Space Agency, the National Science Foundation, and the Sloan Foundation.
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?
Published on Jul 15, 2015 SETI researcher Seth Shostak bets that we will find extraterrestrial life in the next twenty-four years, or he'll buy you a cup of coffee. At TEDxSanJoseCA, he explains why new technologies and the laws of probability make the breakthrough so likely and forecasts how the discovery of civilizations far more advanced than ours might affect us here on Earth. (Filmed at TEDxSanJoseCA.) TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and much more. Find closed captions and translated subtitles in many languages Follow TED news on Twitter: Like TED on Facebook Subscribe to our channel Category Science & Technology License Standard YouTube License
NASA AND THE SEARCH FOR TECHNOSIGNATURES A Report from the NASA Technosignatures Workshop(PDF)
mage: This is Figure 1 from the paper. Caption: A cartoon of the three directions of target selection and the relative advantages of Breakthrough Listen’s primary programs observing stars and galaxies (green), a survey of the Breakthrough Listen Exotica Catalog (blue), and some example campaigns. Previous SETI surveys have generally aimed for depth, achieving strong limits for a small number of similar targets, or high-count, achieving modest limits for a large number of similar targets. Other exotica efforts can be high-depth (red) or high-count (gold) campaigns, but observations of the Exotica Catalog will be broad, achieving modest limits on a small number each of a wide variety of targets. Future discoveries may be added to a later version of the catalog (pale blue), or prompt new campaigns that we cannot yet plan for (grey). Credit: Lacki et al.
The nearby triple star system Gliese 667, taken on June 29, 2013. Credit and copyright: Efrain Morales, Jaicoa Observatory, Puerto Rico. Here is a great new observation of the triple star system Gliese 667 from astrophotographer Efrain Morales of the Jaicoa Observatory in Puerto Rico. Recently, one of the stars, 667 C was found to have perhaps seven planets orbiting it! If all seven planets are confirmed, the system would consist of three habitable-zone super-Earths, two hot planets further in, and two cooler planets further out. Scientists say that the ?f? planet is ?a prime candidate for habitability.?
A new study has offered a new take on the Fermi Paradox - alien civilizations are not visible
to us because they are sleeping. Credit and Copyright: Kevin M. Gill
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?
Published on Aug 25, 2014 One answer to the Fermi Paradox is the idea of the Great Filter; the possibility that something wipes out 100% of intelligent civilizations. That's why we've never discovered any aliens... they're all dead. Is that our future too?
A lecture given by SETI scientist, Dr. Jill Tarter at the Paramount Theater in Charlottesville, Virginia on Monday night October 27th saw some uncomfortable moments when an audience member confronted the celebrated astronomer with notions that the organization was involved in a cover-up of what he thought was the reality of an extraterrestrial presence on planet Earth. SETI is an acronym for a group of radio astronomers meaning: The Search for Extra Terrestrial Intelligence.
This artist concept illustrates how two large, planet-sized objects could collide to create clumps of material in orbit around a star. They'd also create a lot of dust, which would glow in infrared light, something not seen around the Kepler star. Credit: NASA/JPL-Caltech/T. Pyle (SSC)
The challenge is as follows: This is a call for a fun scientific challenge. Suppose a telescope on Earth receives a series of pulses from a fixed, unresolved source beyond the solar system. The source is a star about 50 light years from Earth. The pulses are in the form of short/long signals and they are received in a very narrow band around an electromagnetic frequency of 452.12919 MHz. A computer algorithm identifies the artificial nature of the pulses. It turns out the pulses carry a message. The pulses signify binary digits. Suppose further that you were, by whatsoever reason, put in charge of decoding this message. If you successfully decrypted the message, you should be able to answer the following questions: 1. What is the typical body height of our interstellar counterparts? 2. What is their typical lifetime? 3. What is the scale of the devices they used to submit their message? 4. Since when have they been communicating interstellar? 5. What kind of object do they live on? 6. How old is their stellar system? The competition closes on 3 June, 2016 .
A study using data from NASA's Chandra X-ray Observatory and ESA's XMM-Newton suggests X-rays emitted by a planet's host star may provide critical clues to how hospitable a star system could be. Credit: NASA/CXC/M.Weiss
Scientists are using X-rays to determine the hospitability of stars for life on exoplanets. Data from NASA's Chandra X-ray Observatory and ESA's XMM-Newton were used to study 24 stars like our Sun that were at least one billion years old. They found these older stars had lower levels of X-rays and hence magnetic activity than other types of stars. This relatively calm is good news for life trying to form on planets around these stars. Astronomers will continue to look at different properties, including X-rays, to assess the best place to look for life outside our Solar System. Category Science & Technology License Standard YouTube License
Humans are believed to be the most technologically advanced civilization that’s ever set foot on Earth, or really anywhere in the Solar System. But are we the first? Could there have been an advanced civilization that walked the Earth millions or even billions of years ago, and then died out long ago, their technology and structures lost to the eons. And how could we know? Audio Podcast version: ITunes: RSS: Video Podcast version: ITunes: RSS: What is Fraser's Watching Playlist: 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 / frasercain@gmail.com /Karla Thompson - @karlaii Chad Weber - Chloe Cain - Instagram: @chloegwen2001
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 / frasercain@gmail.com /Karla Thompson - @karlaii Chad Weber - Chloe Cain - Instagram: @chloegwen2001 Team: Fraser Cain - @fcain Jason Harmer - @jasoncharmer Susie Murph - @susiemmurph Brian Koberlein - @briankoberlein Chad Weber - weber.chad@gmail.com Kevin Gill - @kevinmgill Created by: Fraser Cain and Jason Harmer Edited by: Chad Weber Music: Left Spine Down - “X-Ray”
Illustration showing the Lamba Cold Dark Matter (LCDM) model, which indicates how the influence of dark energy has led to an accelerated rate of cosmic expansion. Credit: Wikipedia Commons/Alex Mittelmann
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 / frasercain@gmail.com /Karla Thompson - @karlaii Chad Weber - Chloe Cain - Instagram: @chloegwen2001 Team: Fraser Cain - @fcain Jason Harmer - @jasoncharmer Susie Murph - @susiemmurph Brian Koberlein - @briankoberlein Chad Weber - weber.chad@gmail.com Kevin Gill - @kevinmgill Created by: Fraser Cain and Jason Harmer Edited by: Chad Weber Music: Left Spine Down - “X-Ray”
Published on Sep 19, 2013 A Dyson Sphere is a megastructure that could be built around a star to harness all the solar energy it gives off. In this video we talk about the different kinds of Dyson Spheres, Dyson Clouds and other megastructures that could be built - and how we might even detect them from Earth.
SEARCHING FOR EXTRATERRESTRIAL CIVILIZATIONS USING A GAMMA RAY TELESCOPES
Detcting Exo Clarke- belts (PDF)
SETI@home: New paper on observing "Clarke Exo-belts" Dr. Korpela and his colleagues Prof. Shauna Sallmen and Ms. Kaisa Crawford-Taylor have published a new paper today in the Astronomical Journal about whether astronomers be able to detect belts of satellites circling planets around other stars. Unfortunately, the answer is that even the thickest satellite belts will be very difficult to see with current technology. Even the James Webb Space Telescope will find it difficult.
Space is full of the known and the unknown! However, the unknown far outweighs the known, and we continually get baffled by phenomenons that, try as may, we cannot explain! Thanks to sophisticated equipment and sound data interpretation, we can detect many strange things, even though we struggle to explain them or their origin! The latest discovery that has left even the best NASA scientists scratching their heads is a series of strange radio signals emanating from space! What are these strange radio signals? Are they coming from intelligent aliens trying to establish communication with us? And how do they affect your everyday life? Join us as we dive deep into the strange radio signals coming from space that NASA just detected! Sitting in a cozy, well-lit room on Earth, space might look like a serene place where you can enjoy solitude, unlike the hustle and bustle of the big cities down here. However, that perception could not be more wrong! One of the most common is radio emissions because they come from basically everywhere! From planets and stars, exotic objects like pulsars and black holes, galaxies. Radio emissions even come from human technology. So, at any point in time, radio waves are emanating from uncountable sources! Despite the many possible sources, astronomers have detected new and unusual radio wave signals, unlike any found before! The radio waves fit no currently understood patterns of variable radio sources but are coming from the direction of the center of our Milky Way galaxy! The discovery was made using the ASKAP radio telescope. What is ASKAP? It stands for Australian Square Kilometer Array Pathfinder and is a next-generation radio telescope incorporating novel receiver technologies and leading- edge ICT systems. It is made up of 36 antennas, each 12 meters in diameter, that all work together as a single instrument. When ASKAP is completed, it will be capable of high dynamic wide-field imaging using novel phased array feeds that will provide a unique new capability within radio astronomy. The design of ASKAP is unique among radio telescopes because its antennas feature three-axis movement and will use phased array feeds or radio cameras rather than ‘single pixel feeds’ to detect and amplify radio waves. These attributes mean that the telescope will survey large areas of the sky with unprecedented sensitivity and speed. Why did the scientists believe this radio wave was different from whatever they had heard before? They explained that it has a very high polarization. This means its light oscillates in only one direction, but that direction rotates with time. Apart from this, the brightness of the object also varies dramatically, by a factor of 100, and the signal switches on and off apparently at random, unlike anything the scientists had ever seen before! Initially, the scientists thought it could be a pulsar or else a type of star that emits huge solar flares. But the signals from this new source don’t match what these celestial objects emit! While the investigation continues on the radio wave, the source of the signals has been dubbed the ASKAP J173608.2-321635. However, even though the scientists were baffled by the source of the emission, finding it was nothing short of extraordinary! The astronomers detected six signals over a period of nine months in 2020. But, when the astronomers tried to find the source in visible light, using optical telescopes, they saw nothing. The Parkes radio telescope in Australia also came up empty. This telescope, located just outside the town of Parkes in the central-west region of New South Wales, is one of the four instruments that make up the Australia Telescope National Facility. Parkes has a diameter of 64 meters, making it one of the largest single-dish telescopes in the southern hemisphere dedicated to astronomy. It started operating in 1961, and the surface, control system, focus cabin, receivers, computers, and cabling have all been upgraded to keep the telescope at the cutting edge of radio astronomy. The telescope is now 10,000 times more sensitive than when it was first commissioned. However, it failed to detect the source of the radio signal! Luckily, there is the MeerKAT radio telescope in South Africa, an array of 64 interlinked receptors. A receptor is the complete antenna structure, with the primary reflector, sub- reflector, and all receivers, digitizers, and other electronics installed. Forty-eight of the receptors are concentrated in the core area, which is approximately 1 km in diameter. MeerKAT is even more powerful than Parkes, so the astronomers turned to it to unravel the mystery of this strange radio signal! MeerKAT did detect the signal! However, it was intermittent and different, signaling that
May 12, 2022 Are these Lurkers? Researcher Beatriz Villarroel found bright, shiny, possibly flat or complex shaped objects that were in geo-synchronous orbit with Earth in the early 50's. Well before Sputnik or any other attempted satellites. Also, three of the objects travel in a straight line. We live in a world where we are constantly observing ourselves from orbit. We don’t even think twice about the satellite surveillance of our world because it’s us doing it. But imagine if we were being watched by someone else, far before the dawn of the space age by some unknown agent. More, think of a scenario where it was watching us, and we were inadvertently with our astronomical photographic plates watching it as well. In 1957 the Soviet Union launched humanity’s first orbital satellite, Sputnik 1 ushering in the age of telecommunications and satellites of all flavors from weather to espionage. But our ability to monitor the skies photographically stretches decades before the advent of human space travel, leaving us with an enormous collection of astronomical survey plates to study. Within these plates, previous to 1957, you shouldn’t expect to find anything transient presenting itself as a satellite since we didn’t have them yet. But that’s apparently not the case. In a photographic plate dating from 1950 my guest today has identified a transient phenomenon that not only appears like a satellite would, but actually tracks across the plate exactly as you would expect a satellite in orbit of earth would do. Now there have been conspiracy theories floating around on the internet such as the Black Knight regarding satellites previous to the space age, but these are urban legends that conflate different sources, usually coupled with a photograph of a very human made thermal blanket in orbit. But there is a kernel of something here, there was one such mention of the possibility of artificial satellites of unknown origin before the space age began was made by Major Donald Keyhoe, a prominent figure in the early days of UFOlogy, reporting that the US government was aware of two such satellites. If there was any truth to that report is unknown, but it’s interesting nonetheless. Adding to this mystery, there are other obscure oddities hidden within the history of science that may deepen this mystery. One of these are the mysterious signals Nikola Tesla reported picking up that he thought were of alien origin, though in reality it could just as easily been pulsars or any of the other myriad of natural radio sources that were unknown in his day. But there are also the case of Long Delayed Echoes in radio, where transmissions repeat back to the transmitter often seconds afterward as an echo. Echoes in Radio are not uncommon, the ionosphere loves doing things like that, but a delay of seconds raises eyebrows. Does something repeat or reflect our signals back to us occasionally? But setting that aside, astronomers looking for transients in photographic plates and then have it result in a detection is in itself astonishing. They simply should not be there, and in 1950 no one on earth was anywhere close to the capability of putting a satellite in orbit. And it’s not just one candidate, but three, that really do appear to line up in a non-random way and not as a result of a defect in the plate, though this still needs to be confirmed. Whatever these objects were is a complete unknown. So the question is open, were we being watched? If you would like to help fund the work Beatriz and her team are doing, please contact them directly. beatriz.villarroel(@)su.se Is there a background population of high-albedo objects in geosynchronous orbits around Earth? Exploring nine simultaneously occurring transients on April 12th 1950 00:00:00 Intro 00:03:33 Bio 00:04:00 Transient Artifacts? 00:06:55 What was found 00:08:55 geosynchronous orbit? 00:12:48 Citizen science projects 00:14:00 Possible shapes? 00:19:28 Looking for other objects 00:24:52 Nuclear tests? Youtube Membership Podcast: Apple: More JMG his youtube chnnel Patreon Page for Event Horizon Follow us at other places! @JMGEventHorizon Music: Stellardrone Bandcamp Miquel Johnson Bandcamp FOOTAGE: NASA ESO/Hubble ESO - M.Kornmesser Pixabay #uap #fermiparadox
During the 1940s, Hungarian-American scientist John von Neumann developed a mathematical theory for how machines could endlessly reproduce themselves. This work gave rise to the idea of “von Neumann probes“, a class of self-replicating interstellar probes (SRPs) that could be used to do everything from exploring the Universe to seeding it with life and intervening in species evolution.
As you know, I’m obsessed about the Fermi Paradox. Where are all the aliens? But an even stranger question is: where are all the robot aliens? 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: Instagram - Team: Fraser Cain - @fcain / frasercain@gmail.com /Karla Thompson - @karlaii Chad Weber - Chloe Cain - Instagram: @chloegwen2001 Music: Left Spine Down - “X-Ray”
We often think of colonizing or even terraforming a planet, but how about colonizing every planet in your galaxy, and not by spaceships but by self replicating machines. In this episode, we will be looking at von Neumann probes, discussing many reasons why you’d use them, tied in with the Fermi paradox. ►Click here to subscribe: to astro focus ►Written, Produced & Narrated by: David ►Share this video: https://youtu.be/SEziF9P8ZZc Music: “Cylinder Five” by Chris Zabriskie “A Memory of Earth” by Markus Junnikkala
In this short video explainer, Universe Today publisher Fraser Cain investigates the search for extraterrestrial intelligence (SETI). How could we find and communicate with other civilizations?
NASA’s Wide Field Infrared Survey Telescope (WFIRST) will capture Hubble-quality images covering swaths of sky 100 times larger than Hubble does. Credits: NASA/GSFC/Conceptual Image Lab
View full lesson: Could human civilization eventually spread across the whole Milky Way galaxy? Could we move beyond our small, blue planet to establish colonies in the multitude of star systems out there? These questions are pretty daunting, but their (theoretical) answers were actually put forth decades ago. Roey Tzezana describes the conceptual von Neumann machine. Lesson by Roey Tzezana, animation by Eoin Duffy. Category
It’s been seventy years (as of 11-21) since physicist Enrico Fermi asked his famous question: “Where is everybody?” And yet, the tyranny of the Fermi Paradox is still with us and will continue to be until definitive evidence of Extraterrestrial Intelligence (ETI) is found. In the meantime, scientists are forced to speculate as to why we haven’t found any yet and (more importantly) what we should be looking for. By focusing our search efforts, it is hoped that we may finally determine that we are not alone in the Universe.
This illustration shows how gravitational lensing works. The gravity of a large galaxy cluster is so strong, it bends, brightens, and distorts the light of distant galaxies behind it. Credit: NASA/ESA/L. Calcada
As you know, I’m obsessed about the Fermi Paradox. Where are all the aliens? But an even stranger question is: where are all the robot aliens? 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: Instagram - Team: Fraser Cain - @fcain / frasercain@gmail.com /Karla Thompson - @karlaii Chad Weber - Chloe Cain - Instagram: @chloegwen2001 Music: Left Spine Down - “X-Ray”
Planets everywhere. So where are all the aliens? Credit: ESO/M. Kornmesser
From top to bottom: The plentiful M dwarfs or red dwarfs; the less plentiful K dwarfs; the relatively uncommon G-type star, like our Sun. The graphic compares the stars in terms of several important variables. The habitable zones, potentially capable of hosting life-bearing planets, are wider for hotter stars. The longevity for red dwarf M stars can exceed 100 billion years. K dwarf ages can range from 15 to 45 billion years. And, our Sun only lasts for 10 billion years. The relative amount of harmful radiation (to life as we know it) that stars emit can be 80 to 500 times more intense for M dwarfs relative to our Sun, but only 5 to 25 times more intense for the orange K dwarfs. Red dwarfs make up the bulk of the Milky Way’s population, about 73%. Sunlike stars are merely 6% of the population, and K dwarfs are at 13%. When these four variables are balanced, the most suitable stars for potentially hosting advanced life forms are K dwarfs. Credits: NASA, ESA and Z. Levy (STScI)
Tidally-locked exoplanets may be very common around red dwarf (M-dwarf) stars because of their close orbits. Image Credit: M. Weiss/CfA
This is an artist’s impression of the well-known TRAPPIST-1 system, a red dwarf that hosts 7 exoplanets. Thought the planets are all terrestrial planets, and three of them are in the habitable zone, the observed flaring from the TRAPPIST-1 star means life is unlikely. Image Credit: NASA/JPL-Caltech
An artist’s illustration of Epsilon Eridani and two exoplanets. EE is a K-dwarf star that’s only 10.5 light years from the Sun. It may host exoplanets, but their existence is controversial. Epsilon Eridani is young, only a billion years old, and it’s undergoing a tumultuous youth at this age. But it’ll calm down eventually, and could be a stable, hospitable star for tens of billions of years. Image Credit : By NASA, ESA, G. Bacon – Public Domain,from Wikipedia
Kepler 442 is a K-dwarf star hosting a rocky exoplanet about twice as massive as Earth. The planet is in the star’s habitable zone and is an object of intense interest. Artist’s illustration. Image Credit: By Ph03nix1986 – Own work, CC BY-SA 4.0,
Effects of M dwarf magnetic fields on potentially habitable planets (PDF)
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.
On November 16th, 1974, a coded radio message was broadcast from the Arecibo Observatory in Puerto Rico. The message contained information on mathematics, humanity, the Solar System, DNA, and the Observatory itself. The destination for this message was Messier 13 (NGC 6205 or “The Great Hercules Cluster”), a globular star cluster located about 25,000 light-years from Earth in the constellation of Hercules.
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 and the Drake Equation. Credit: SETI Institute
The Arecibo radio telescope in Puerto Rico and the Arecibo Message (inset). Credit: Seth Shostak/SETI Institute/AP
In this short video explainer, Universe Today publisher Fraser Cain investigates the search for extraterrestrial intelligence (SETI). How could we find and communicate with other civilizations?
Should we be listening or broadcasting in the search for ETI? Credit: UCLA SETI Group/Yuri Beletsky, Carnegie Las Campanas Observatory
Get MagellanTV here: and get an exclusive offer for our viewers: an extended, month-long trial, FREE. MagellanTV has the largest and best collection of Science content anywhere, including Space, Physics, Technology, Nature, Mind and Body, and a growing collection of 4K. This new streaming service has 3,000+ great documentaries. Check out our personal recommendation and MagellanTV’s exclusive playlists: ?? Subscribe for more: ?? Share this video with a fellow space traveler: ?? Watch my most recent upload: ?? Help me improve the channel by joining the community on Patreon ?? Check out Launch Pad merchandise! In 1974, the Arecibo radio telescope transmitted a message to contact extraterrestrials. The message was designed by Frank Drake. Here's what it says. 00:00 Start 01:40 Magellan TV 02:35 History of the message and M13 04:35 How the message was sent 05:26 Message Structure 06:30 Decoding the first 10 numbers from binary 08:20 Atomic elements and DNA 09:41 Depiction of humanity and population 10:51 Depiction of Arecibo 11:36 Testing the message and dangers 14:00 We're disappearing 15:19 Possible signal detected? : 🔔 Subscribe for more 🖖 Share this video with a fellow space traveler: 🔴 Watch my most recent upload: 🚀 Help me improve the channel by joining the community on Patreon ?? Check out Launch Pad merchandise! Disclaimer: Some of these links go to one of my websites and some are affiliate links where I'll earn a small commission if you make a purchase at no additional cost to you. 🧭 Reference: Encyclopedia Galactica (Write Science): ? Let's connect: For business inquiries - chris AT christianready DOT com Twitter - @launchpadastro Instagram - @launchpadastro - Facebook Discord - ?? c/o Christian Ready P.O. Box 66 Westminster, MD 21158 United States Earth
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Institute – Arecibo Message Astronomy and Ionosphere Center – The NEW Arecibo Message Staff. “The Arecibo Message of November 1974.” Icarus, vol. 26, no. 4 (1975) News – “It’s the 25th anniversary of Earth’s first (and only) attempt to phone E.T.” (Nov. 12, 1999)
Good telescope that I've used to learn the basics: Get a Wonderful Person shirt: Alternatively, PayPal donations can be sent here: Hello and welcome! My name is Anton and in this video, we will talk about a new version of iconic #arecibo message that may be sent to extraterrestrial intelligence in the near future Links: A Beacon in the Galaxy: Updated Arecibo Message for Potential FAST and SETI Projects List of interstellar radio messages Arecibo message Alien e-mail reply to arrive in 2015? RuBisCo Stars and the Riddle of Life METI (Messaging Extraterrestrial Intelligence Cosmic Call This SETI Message to a Nearby Star Will Arrive in 2022 #seti #meti Support this channel on Patreon to help me make this a full time job: Space Engine is available for free here: Enjoy and please subscribe. Or get a shirt: Twitter: Facebook: Twitch: Bitcoins to spare? Donate them here to help this channel grow! 1GFiTKxWyEjAjZv4vsNtWTUmL53HgXBuvu The hardware used to record these videos: CPU: Video Card: Motherboard: RAM: PSU: Case: Microphone: Mixer: Recording and Editing: Some of the above are affiliate links, meaning I would get a (very small) percentage of the price paid. Thank you to all Patreon supporters of this channel Special thanks also goes to all the wonderful supporters of the channel through YouTube Memberships. Images/Videos: Hisashi Hirabayashi Sid Leach/Adam Block/Mount Lemmon SkyCenter CC BY-SA 4.0 3.0 Colby Gutierrez-Kraybill -CC BY Licenses used: Licenses by 4.0 hLicenses by-sa 4.0 Licenses by 3.0 Licenses by-sa 3.0 Licenses by 2.5 Licenses by-sa 2.5 Licenses by 2.0 Licenses by-sa 2.0 Music in this video Learn more Listen ad-free with YouTube Premium Song After All Artist Geographer Album After All Licensed to YouTube by YouTube Audio Library, and 1 Music Rights Societies Song Birds Artist Silent Partner Album Birds Licensed to YouTube by YouTube Audio Library
The field of extrasolar planet studies is undergoing a seismic shift. To date, 4,940 exoplanets have been confirmed in 3,711 planetary systems, with another 8,709 candidates awaiting confirmation. With so many planets available for study and improvements in telescope sensitivity and data analysis, the focus is transitioning from discovery to characterization. Instead of simply looking for more planets, astrobiologists will examine “potentially-habitable” worlds for potential “biosignatures.”
This artist’s impression shows the planet orbiting the Sun-like star HD 85512 in the southern constellation of Vela (The Sail). Credit: ESO
An artist’s illustration of the exoplanet HR8799e, which was directly imaged using the GRAVITY instrument on the ESO’s Very Large Telescope Interferometer. Credit: ESO/L. Calçada
An artist’s illustration of the exoplanet HR8799e directly images by the ESO’s GRAVITY instrument on its Very Large Telescope Interferometer. Credit: ESO/L. Calçada
Artist’s impression of the Nancy Grace Roman space telescope (formerly WFIRST). Credit: NASA/GSFC
For over sixty years, scientists have been searching the cosmos for possible signs of radio transmission that would indicate the existence of extraterrestrial intelligence (ETI). In that time, the technology and methods have matured considerably, but the greatest challenges remain. In addition to having never detected a radio signal of extraterrestrial origin, there is a wide range of possible forms that such a broadcast could take.
The 85-foot (26 m) Howard E. Tatel Radio Telescope at NRAO used in Project Ozma. Credit: Z22/Wikipedia Commons
Radio spectrogram plots created from Setigen frames. Credit: Brzycki et al.
Artist’s impression of Breakthrough Listen and the instruments it relies on. Credit: Breakthrough Listen/Univ. of Machester/Daniëlle Futselaar
Composite image of the SKA combining all elements in South Africa and Australia. Credit: SKAO
One of the 42 dishes in the Allen Telescope Array that searches for signals from space. Credit: Seth Shostak / SETI Institute.
On February 14th, 2020, the SETI Insitute and the National Radio Astronomy Observatory (NRAO) announced a new partnership, which they appropriately named the Commensal Open-Source Multimode Interferometer Cluster Search for Extraterrestrial Intelligence (COSMIC SETI). This partnership will allow the Karl G. Jansky Very Large Array (VLA) to participate in the Search for Extraterrestrial Intelligence (SETI) for the first time in its history.
The end results of the EDFA/Cosmic fiber work. Credit: SETI Institute
SETI Institute Post-Doctoral Researchers, Dr. Savin Varghese, and Dr. Chenoa Tremblay, in front of one of the 82-foot diameter dishes that make up the Very Large Array. Credit: SETI Institute
How will humanity meet its end? That’s only a depressing question if you think that humanity will go on forever. Alas, nothing lasts forever, and if something could last forever, it probably wouldn’t be our struggling primate species. But we’ll likely be around for a while yet, pondering things as we do. One of the things we love to ponder is: why don’t we hear from any other alien civilizations?
Our cities are becoming larger and more interconnected. How far will that trend go? Lights from the United States glow in this night image based on data taken from the Suomi NPP satellite in April and October 2012. Credit: NASA Earth Observatory/NOAA NGDC
This graph shows the difference between linear, sublinear, and superlinear. Image Credit: Remi Louf, 2015.
This graph from the study shows how population growth leads to singularities that must be avoided by resets or innovations. Image Credit: Bettencourt et al.
This figure from the study shows three different scenarios for a civilization on an asymptotic burnout trajectory. The top civilization reaches burnout without realizing it in advance. The middle civilization sees burnout coming but is unable to reach homeostasis before burning out. The bottom civilization sees burnout coming and successfully reorients itself toward homeostasis. Image Credit: Wong and Bartlett 2022
This figure from the study shows that Type III civilizations may be out of reach and that civilizations are bounded by collapse and homeostasis. Image Credit: Wong and Bartlett 2022.
This figure from the study shows that homeostatic civilizations will last much longer than others. But it’s impossible to know how many, if any, might make it to that point. Image Credit: Wong and Bartlett 202
Humanity’s future is up in the air. Will our distant descendants have the wisdom to see singularities coming? Can we create a global political system to deal with singularities effectively? Who knows. But there’s a melancholy aspect to both asymptotic burnout and homeostatic awakening. In both cases, we’ll never meet the neighbours.
Researchers at Penn State University have studied a new technique that could use a star’s ability to focus and magnify communications which could be passing through our own solar system, and has been accepted for publication in The Astronomical Journal and was part of a graduate course at Penn State covering the Search for Extraterrestrial Intelligence (SETI) The study describes our Sun as potentially acting as a kind of node as part of an interstellar communication network involving probes or relays near our Sun, acting like cellular telephone towers in space.
The Wow! signal represented as “6EQUJ5”. The original printout with Ehman’s handwritten exclamation is preserved by Ohio History Connection. It was pointed towards the Proxima Centauri system. The signal was used to support the search for extraterrestrial intelligence. (Credit: Big Ear Radio Observatory and North American AstroPhysical Observatory (NAAPO))
The Wow! signal represented as 6EQUJ5.
Credit: Big Ear Radio Observatory/NAAPO
Rhodopsins are ancient proteins evolved by some of Earth's first life forms. They turned sunlight into energy without photosynthesis. Image Credit: Sohail Wasif/University of California, Riverside.
Rhodopsins are present in the human eye’s rods, where they work in low light conditions. Image Credit: Arizona State University.
This figure from the paper illustrates the coupling between surface irradiance, spectral tuning, and functional diversity over microbial rhodopsin evolution. (b) is particularly interesting because it shows how the colour tuning of extant and ancestral microbial rhodopsins appear to explore the spectral window not already occupied by other biological pigments such as chlorophylls and bacteriochlorophylls, shown in gray. Image Credit: Sephus et al. 2022.
This figure from the paper illustrates the coupling between surface irradiance, spectral tuning, and functional diversity over microbial rhodopsin evolution. (b) is particularly interesting because it shows how the colour tuning of extant and ancestral microbial rhodopsins appear to explore the spectral window not already occupied by other biological pigments such as chlorophylls and bacteriochlorophylls, shown in gray. Image Credit: Sephus et al. 2022.
Significant gaps exist in our understanding of early Earth’s atmosphere because geologic evidence isn’t complete. This image is from a separate study and shows four sources and sinks for key molecular species in Earth’s early atmosphere. By combining the new evolutionary knowledge of rhodopsins with our models of early Earth, we can better understand what primitive life might look like on other worlds and what those atmospheres might look like. Image Credit: Pearce et al. 2022.
Earth’s most ancient rock holds our best geologic clues about Earth’s early life, but they’re not easy to find and untangle. This image shows Australia’s Jack Hills formation, where ancient zircons hold important clues about the history of life. By Robert Simmon, NASA – Public Domain (Wikipedia)
The James Webb Space Telescope will examine exoplanet atmospheres spectroscopically to identify different molecular species. But studies like this one help us understand what we’re seeing and what to look for. This image is a transmission spectrum for the exoplanet WASP-96 b, based on data acquired by Webb’s Near-Infrared Imager and Slitless Spectrograph (NIRISS). WASP-96b is a hot gas giant and won’t host life, but the image shows what the JWST is capable of and its contribution to exoplanet science. Credit: NASA, ESA, CSA, STScI
mage of a simulated Earth, at 1024×1024 pixel resolution, at the distance of Proxima Centauri,at 1.3 pc, as projectedby the SGL to an image plane at 650 AU from the Sun. Credit: Toth H. & Turyshev, S.G.
The diffraction effect of a solar lens. Credit: Engeli & Saha
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Information on Predator-Prey Behaviour in Self-Replicating Interstellar Probes Duncan H. Forgan1 (PDF)
Let’s assume that extra-terrestrial civilizations exist in our galaxy. Like us, they are conducting their own SETI research to find us, see us and study us. What would they see? What methods could they use to learn about us? What technologies have they invented to see and listen to us. And finally, what information will they get from our civilization. Join us for a thought-provoking discussion on the possibility of extraterrestrial civilizations observing our own planet. Our panel of experts, Seth Shostak Senior researcher at the SETI Institute and Paul Dalba, research scientist at the SETI Institute and 51 Pegasi b Fellow of the Heising-Simons Foundation, will present the latest research and theories on this fascinating topic. Don’t miss this opportunity to expand your knowledge and engage in scientific discourse. Molly Bentley, Executive Producer and co-host at Big Picture Science moderates this conversation. If you like science, support the SETI Institute! We're a non-profit research institution whose focus is understanding the nature and origins of life in the universe. Donate here: to the seti institute Learn more about the SETI Institute and stay up-to-date on awesome science: - Subscribe to our YouTube channel at - Watch our streams over on Twitch at - Listen to our podcast, Big Picture Science - Subscribe to our newsletter - Buy merchandise from Chop Shop Don't forget to like and subscribe! Ring the bell for notifications of when we go live. #SETITalks #megastructure #exoplanet #setitalks #seti #arewealone #searchforlife #astrobiology #science #space #astronomy
Oumuamua was an elongated space object, which was discovered speeding past the sun in 2017. At that time is was the only celestial body known to have visited our solar system from another. If you like this interview, check out the more recent ones at this channel or the Saint Helena Forum website at
What would happen if we received a message from an extraterrestrial civilization? Daniela de Paulis, Artist in Residence at the SETI Institute and the Green Bank Observatory (GBO), brought a team of international experts together, including SETI researchers, space scientists, and artists, to stage her latest project, A Sign in Space. On May 24, 2023, the European Space Agency’s ExoMars Trace Gas Orbiter (TGO), in orbit around Mars, will transmit an encoded message to Earth to simulate receiving a signal from extraterrestrial intelligence. Please join us for a live stream hosted by the SETI Institute’s Dr. Franck Marchis and GBO’s Victoria Catlett as they receive the message and learn about the project from various artists and scientists involved. : A Sign in Space website : Join the Discord : Download the data at Filecoin :or on BTL (index of this directory) If you like science, support the SETI Institute! We're a non-profit research institution whose focus is understanding the nature and origins of life in the universe.Donate here: to the seti institute Learn more about the SETI Institute and stay up-to-date on awesome science: - Subscribe to our YouTube channel at - Watch our streams over on Twitch at - Listen to our podcast, Big Picture Science - Subscribe to our newsletter - Buy merchandise from Chop Shop Don't forget to like and subscribe! Ring the bell for notifications of when we go live. #SETITalks #megastructure #exoplanet #seti #firstcontact #sciart #artistinresidence #asigninspace