Speaker: Ann Marie Cody, research scientist, SETI Institute Carl Sagan Center When: Wednesday 9 December 2026, 9:30am Pacific, 12:30pm Eastern, 5:30pm UK Where: online, Zoom Webinars. Free. Register at www.sciencekind.com […]
Technosignature
ScienceKind: The Search for another Earth: Ravi Kumar Kopparapu
Speaker: Ravi Kumar Kopparapu, planetary scientist, NASA Goddard Space Flight Center When: Wednesday 28 October 2026, 9:30am Pacific, 12:30pm Eastern, 4:30pm UK (the UK clocks change a week before the […]
Posted inSETI & Technosignatures
The First Decade of Breakthrough Listen
[astro-ph.IM] Breakthrough Listen (BL), launched in July 2015 with a 10-year, $100M commitment from the Breakthrough Prize Foundation, is the most comprehensive search for technosignatures ever conducted.
![The on-sky geometry of the Anti-Solar Point (ASP), the ecliptic, and the synthesized beams of the ATA-ASP campaign. See the pilot paper by Sheikh and Hort et al. 2026 for full detail [1]. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/A-Technosignature.png?resize=1200%2C719&ssl=1)
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A Technosignature Survey Of The Anti-Solar Point: The SETI Institute’s Largest-Ever Campaign With The Allen Telescope Array
[astro-ph.IM] The ATA-ASP campaign is a radio technosignature survey of the Anti-Solar Point as a “Schelling point”, using the Allen Telescope Array (ATA) in the Search for Extraterrestrial Intelligence (SETI).
Posted inSETI & Technosignatures
Identifying Casual SETI Transmissions And Ultra-Faint RFI With Cumulant Imaging
[astro-ph.IM] Techniques for identifying radio beacons transmitted by extra-terrestrial civilizations are well advanced.
![Waste-heat temperature–luminosity phase space. Existing midinfrared searches occupy the warm band (orange); cold computational radiators fall in the far-infrared/submillimetre band (green) towards the CMB floor. Grey lines show 345-GHz flux-density contours for a source at 100 pc, from equation (10), which is linear in the fractional waste-heat luminosity 𝑓 on the vertical axis; the figure thus covers partial swarms and complete spheres (𝑓 = 1) alike. Markers indicate a complete 1 L⊙ cold sphere, the level of the archival debris-survey limits (Section 6.1), and the domain of warm mid-infrared searches. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/09/Slysh.png?resize=1200%2C720&ssl=1)
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Slysh Haloes: The Waste Heat Of Cold Computing As A Submillimetre Technosignature
[astro-ph.IM] Searches for Dysonian waste heat have operated almost exclusively in the mid-infrared and are therefore sensitive primarily to technology radiating at 100-600K. We argue that mature, computation-dominated civilisations may […]
Posted inSETI & Technosignatures
The VLA and High-Frequency SETI: Expanding The Search for Life
[astro-ph.IM] The Commensal Open-Source Multimode Interferometer Cluster (COSMIC) runs software that searches for technologies elsewhere in the Universe (“technosignatures”) using the Karl G. Jansky Very Large Array (VLA). Specifically, it […]
Posted inSETI & Technosignatures
International Law and the Search for Extraterrestrial Intelligence
[Proceedings of the IAU]. The search for extraterrestrial life, especially intelligent life, is among the most profound scientific endeavors.
Posted inSETI & Technosignatures
Gaia DR3 Limits on Stellar Engine Technosignatures in Nearby Stars
[astro-ph.GA] An operating stellar engine that transfers momentum to its host star could produce an approximately persistent transverse acceleration during the Gaia Data Release 3 (DR3) observing epoch.
![Where the Dyson sphere on and off fits of M77 differ most, and how new photometry changes the comparison. In each panel, the upper sub-panel shows the median posterior AGENT-on (solid red) and AGENT-off (dashed blue) model spectra with shaded 16–84% posterior bands and the fitted photometry overplotted (open black circles), while the lower sub-panel shows the percent deviation of the AGENT-on model relative to the AGENT-off model, with the shaded band giving the 1σ uncertainty propagated in quadrature from the two independent fits. -- [astro-ph.GA]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/The-G.png?resize=1200%2C713&ssl=1)
Posted inSETI & Technosignatures
The Ĝ Infrared Search for Extraterrestrial Civilizations with Large Energy Supplies. V. When Galaxies Glow with Industry
[astro-ph.GA] We present the most robust stellar population synthesis (SPS)-based search for galaxy-spanning technological waste heat to date, applied to 129 nearby galaxies spanning a wide range of spectral energy […]