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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.
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.
A Neutrino Beacon A. A. Jackson* TRITON SYSTEMS, LLC, 17000 El Camino Real, Houston, TX 77058 (PDF)
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
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When listen, but we don't send. Why do we expect aliens to transmit if we don't? Many have voiced concerns about any programs designed to broadcast our presence - afterall, they may not be friendly. Although it may be a popular idea in science fiction, what do scientists say about this scenario? Today we explore the arguments for and against messaging, and what it might imply about the type of civilization that chooses to engage in messaging... Written and presented by Prof David Kipping. Special thanks to Erik Wernquist for giving us permission to use a clip from his beautiful "Wanderes" short film Support our research program: Get Stash here! THANK-YOU to our supporters D. Smith, M. Sloan, C. Bottaccini, D. Daughaday, A. Jones, S. Brownlee, N. Kildal, Z. Star, E. West, T. Zajonc, C. Wolfred, L. Skov, G. Benson, A. De Vaal, M. Elliott, B. Daniluk, S. Vystoropskyi, S. Lee, Z. Danielson, C. Fitzgerald, C. Souter, M. Gillette, T. Jeffcoat, J. Rockett, D. Murphree, S. Hannum, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, G. Canterbury, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, J. Alexander, C. Macdonald, M. Hedlund, P. Kaup, C. Hays, W. Evans, D. Bansal, J. Curtin, J. Sturm, RAND Corp., M. Donovan, N. Corwin, M. Mangione, K. Howard, L. Deacon, G. Metts, G. Genova, R. Provost, B. Sigurjonsson, G. Fullwood, B. Walford, J. Boyd, N. De Haan, J. Gillmer, R. Williams, E. Garland, A. Leishman & A. Phan Le. ::Music:: Music licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via Creative Commons (CC) Attribution License (https://creativecommons.org/licenses/..., or with permission from the artist ► Sid Acharya - Stories from the Sky (0:00) ► Brad Hill - There Is But One Good (02:00) [https://open.spotify.com/album/4pmiXc...] ► Falls - Ripley (05:54) ► Outside The Sky - Come Home (09:11) ► Chris Zabriskie - Cylinder Two (13:07) ► Joachim Heinrich - Y (16:18) ► Chris Zabriskie - Neptune Flux 1 (17:07) ► Brad Hill - Loneliness (18:30) [https://open.spotify.com/album/6vasPO...] ► Chris Zabriskie - Neptune Flux 10 (21:46) ► Brad Hill - When It Feels Like The World Is On Your Shoulders (23:22) [https://open.spotify.com/album/6Y6yaw...] ► Indive - Trace Correction (25:42) ::Film/TV clips used:: ► Cosmos (PBS Television) ► Cosmos: A Space Odyssey (20th Television) ► Star Trek: The Next Generation (Paramount Television) ► Contact (Warner Bros. Pictures) ► War of the Worlds (Paramount Pictures) ► Valerian and the City of a Thousand Planets (EuropaCorp Distribution) ► Star Trek: Discovery (Paramount+) ► Arachnophobia (Buena Vista Pictures Distribution) ► Apocalypto (Buena Vista Pictures Distribution) ► Gladiator (Dreamworks Distribution LLC) ► Star Trek (Paramount Pictures) ► A River Runs Through It (Columbia Pictures) ► Independence Day (20th Century Fox) ► Arrival (Paramount Pictures) ► Close Encounters of the Third Kind (Columbia Pictures) ► The Watcher (Netflix) ► Star Wars: The Force Awakens (Walt Disney Studios Motion Pictures) ► Wile E. Coyote and the Road Runner (Looney Tunes) ► Margin Call (Lionsgate) ► Avengers: Infinity War (Walt Disney Studios & Motion Pictures) ► Casino Royale (Sony Pictures Releasing) ► Star Trek: Picard (Paramount+) ► The Hangover (Warner Bros. Pictures) ► Into The Wild (Paramount Vantage) ► Dallas Buyers Club (Focus Features) ► The Bucket List (Warner Bros. Pictures) ► Johnny Cash - Hurt (American Recordings) ► Game of Thrones (HBO) ► Prometheus (20th Century Fox) ► The Expanse (Legendary Television Distribution) ► Star Trek: First Contact (Paramount Pictures) ► Annihilation (Paramount Pictures) ► The Assassination of Jesse James by the Coward Robert Ford (Warner Bros. Pictures) ► The Grey (Open Road Films) ► Papillon (Columbia Pictures)
Researchers Just Scanned 14 Worlds From the Kepler Mission for "Technosignatures",
Evidence of Advanced Civilizations"
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
DALL-E (AI)Image of an advanced civilization.
Audio Podcast version: ITunes: Universe Today Podcast RSS: Video Podcast version: ITunes: RSS: What is Fraser's Watching Playlist: Sign up to my weekly email newsletter: For Free Follow us on Twitter: @universetoday Uniersetoday's home page Like us on Facebook: Instagram - Support us at:Support us at: Instagram - Team: Fraser Cain - @fcain / frasercain@gmail.com /Karla Thompson - @karlaii Chad Weber - Chloe Cain - Instagram: @chloegwen2001 Chloe Cain - Instagram: @chloegwen2001 References: NASA's Technosignatures workshop: Agenda and Recorded Presentations NASA and the Search for Technosignatures: A Report from the NASA Technosignatures Workshop
Are alien civilizations likely to be younger or older than us in age? A basic question that seems insurmountable until we start detecting them. But even before that, we can use some logical deduction using lifetime distribution statistics to determine the most plausible answer to this question. Join us today for an explanation of our new research paper on this topic. Thank-you to Kevin Clark, Tom Widdowson, Denny Smith, Stephanie Hackley, Mark Sloan, Laura Sanborn, Kolos Kantor, Patrick Herman, Abel Aganbegyan, Claudio Bottaccini, Daniel Brunk, Douglas Daughaday, Scott Fincher, James Kindred, Andrew Jones, Jason Allen, Steven Baldwin, Jason Black, Stuart Brownlee, Shivam Chaturvedi, David Denholm, Tim Dorais, Glen Downton, Eneko Xabier, Elizondo Urrestarazu, Gordon Fulton, Sean Griffiths, Peter Halloran, John Jurcevic, Niklas Kildal, Jack Kobernick, Wes Kobernick, Valeri Kremer, Marc Lijoi, Sheri Loftin, Branden Loizides, Anatoliy Maslyanchuk, Blair Matson, Ocean Mcintyre, Laini Mitchell, Jeffrey Needle, André Pelletier, Juan Rivillas, Bret Robinson, Zenith Star, Lauren Steely, Ernest Stefan-Matyus, Mark Steven, Elena West, Barrett York, Tristan Zajonc, Preetumsingh Gowd, Shaun Kelsey, Chuck Wolfred, David Vennel, Emre Dessoi, Fahid Naeem, Francisco Rebolledo, Hauke Laging, James Falls, Jon Adams, Michael Gremillion, Pierce Rutherford, Trev Kline, Tristan Leger, Lasse Skov, Takashi Hanai, Drew Roberts, Erynn Wilson, Ian Baskerville, Jacob Bassnett, John Shackleford, Marcus Undin, Martin Kroebel, Ian Johnstone, Geoff Suter, Ian Hopcraft, James Valdes, Phil Akrill-Misso, William Robertson, Elizabeth Orman & Giles Ingham. Video on planet cloaking: • A Cloaking Device for Planets :References used:: ► Kipping, Frank & Scharf, 2020, "Contact Inequality -- First Contact Will Likely Be With An Older Civilization", : International Journal of Astrobiology ► Benton, M. J., 1993, “The Fossil Record”, Vol 2 (Chapman & Hall, London, 1993) ► Civilization lifetimes figure from BBC Future/Nigel Hawtin: ► Olson et al., 2014, "Survival Probabilities of Adult Mongolian Gazelles", Journal of Wildlife Management, 78, 1: ► Battery lifetime figure from BatteryUniversity.com: Movies clips used:: ► Master & Commander: The Far Side of the World (2003) 20th Century Fox ► Noah (2014) Paramount Pictures ► Avatar (2009) 20th Century Fox ► Contact (1997) Warnos Bros. Pictures ► GI Joe Retaliation (2013) Paramount Pictures ► Terminator 3 (2003) Warners Bros. Pictures ► The House (2017) Warners Bros. Pictures ► X2 (2003) 20th Century Fox ► The Pursuit of Happyness (2006) Sony Pictures Releasing ► Into The Wild (2007) Paramount Vantage ► 300 (2006) Warner Bros. Pictures ► Cleopatra (1963) 20th Century Fox ► Gladiator (2000) Dreamworks Pictures ::TV clips used:: ► Andrew Marr's History of the World - BBC ► Star Trek the Next Generation - Paramount Television ► See Other video footage used:: Music:: Music used is licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], or via Creative Commons (CC) Attribution License CC BY 4.0 DEED Attribution 4.0 International , or with permission from the artist. ► "Shade Upon Thy Right Hand" by Hill, used with permission from the artist: ► "Fable" by Stephen Keech licensed via SS ► "Cylinder Five" by Chris Zabriskie licensed under a CC Attribution license: ► "Painted Deserts" by Shimmer licensed via SS ► "It's Always Darkest Before the Dawn" by Hill licensed via SS ► "Cylinder Four" by Chris Zabriskie licensed under a CC Attribution license: ► "We Were Never Meant to Live Here" by Chris Zabriskie licensed under a CC Attribution license: ► "Fragmented" by Hill, used with permission from the artist: ► " Stories About the World That Once Was" by Chris Zabriskie licensed under a CC Attribution license: ► "Waking Up" by Atlas licensed via SS ► "Ticking" by Alternative Endings licensed via SS ► "Trace Correction" by Indive licensed under a CC Attribution license: 0:00 Prologue 1:22 Technological Lockstep 6:57 Distribution of Civilization Lifetimes 19:17 Bayes vs The Cosmos 23:39 Temporal Bias 32:20 Credits