Two spacecraft flying hundreds of millions of miles apart trained their ultraviolet instruments on interstellar comet ...

A NASA probe that had a close encounter with a strange object from another solar system has been declared dead and scientists ...

NASA has ended its MAVEN mission after losing contact with the spacecraft after an 11-year exploration of Mars’ atmosphere ...

NASA spacecraft observed the celestial iceball as it swung past Mars last October, venturing within 19 million miles ...

A mysterious interstellar comet has been taking a tour of our solar system in recent months, garnering intense interest from astronomers and space enthusiasts alike. Comet 3I/ATLAS is only the third ...

Observations with the Allen Telescope Array set new limits on possible signals from extraterrestrial transmitters.

A comet hurtling through the solar system from interstellar space is exactly what it appears to be, NASA officials said Wednesday, moving to quash a wave of online speculation. At a news conference, ...

NASA's James Webb Space Telescope has made a breakthrough by detecting methane gas on the interstellar comet 3I/ATLAS for the ...

Add Yahoo as a preferred source to see more of our stories on Google. NASA's Hubble Space Telescope caught a glimpse of 3I/ATLAS – again. For months, 3I/ATLAS has attracted plenty of attention – and ...

NASA's James Webb Space Telescope has collected its first mid-infrared chemical fingerprint of an interstellar object during ...

NASA's Hubble Space Telescope and an ESA orbiter bound for Jupiter both recently glimpsed 3I/ATLAS. The comet will make its closest approach to Earth in December but poses no threat and is not visible ...