From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

In July, researchers using the NASA-funded Asteroid Terrestrial-impact Last Alert System survey telescope in Chile made an ...

Hubble's latest images of interstellar comet 3I/ATLAS reveal sustained, jet-like eruptions and a carbon dioxide-rich coma ...

An amateur photographer in Portland captures rare images of interstellar Comet 3I/ATLAS using a smart telescope as the ...

Researchers noted that two other teams conducted independent searches of 3I/ATLAS at different frequencies. Neither group detected credible artificial radio signals. Scientists say the findings ...

The third known visitor from another star system, Comet 3I/ATLAS, has been racing through the Solar System with just enough ...

A dedicated scan for signs of radio-transmitting technology in interstellar comet 3I/ATLAS has come back with absolute ...

Learn about the 3I/ATLAS mystery as Harvard's Avi Loeb reveals 'wobbling jets' that could suggest the interstellar visitor is ...

The third known visitor from another star system, 3I/ATLAS, has already delivered on one of the biggest promises in modern ...

Interstellar comet 3I/ATLAS reveals ancient secrets and strange chemistry as the largest object of its kind ever tracked.

As this interstellar object approached its closest point to Earth, a massive radio telescope attempted to sniff out a ...

Astronomers thought they had seen the "first hints of life on an alien world" this year, but they disappeared under closer ...