Search for Life
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Alien life likely can't survive on exoplanets smaller than Mars, scientists say
By Kiona N. Smith Published
For a world to maintain an atmosphere long enough for life to gain a foothold, it seems it needs to be at least as big as Mars.

Should we trust AI in the search for alien life? Scientists aren't so sure
By Keith Cooper Published
New research suggests AI can be repeatedly fooled into mistaking non-life for life.

White House appoints Harvard astronomer Avi Loeb to lead new UFO study group
By Leonard David Published
Harvard astrophysicist Avi Loeb has been appointed as the head of a new White House group to study UFOs, or unidentified anomalous phenomena, as they're now known.

Could evidence of life on Mars be hiding in clay? Europe wants to send a rover to check
By Chelsea Gohd Published
ESA's Rosalind Franklin rover will investigate possible signs of life in Martian clay.

Searching for alien life: New model could help scientists home in on habitable exoplanets
By Samantha Mathewson Published
A new exoplanet model screens rocky worlds by their ability to retain atmospheres over geologic timescales, helping narrow the search for potentially habitable planets beyond Earth.

Was life delivered to Earth by asteroids with a helping hand from Jupiter?
By Kiona N. Smith Published
Earth may have gotten some of the key ingredients for life from asteroids in the inner solar system, but not without assistance from Jupiter.

NASA is building a new space telescope to search for life on nearby planets. What would it see on ancient Earth?
By Paul Sutter Published
A new study analyzed how NASA's Habitable Worlds Observatory might be able to confidently spot biosignatures in the atmosphere of a distant ancient Earth.

How should we handle alien detection in a world of AI, deepfakes and social media? This committee is writing the rulebook
By Keith Cooper Published
If and when SETI discovers alien life, then a revised Declaration of Principles guarantees that once the discovery has been verified, its disclosure will come soon thereafter.

Interstellar comet 3I/ATLAS is not an alien spacecraft: SETI hunt for 'technosignatures' comes up empty
By Mike Wall Published
Scientists failed to find radio signals emanating from the interstellar comet 3I/ATLAS, further bolstering its status as a natural object, not one made by aliens.
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