Avi Loeb said bases this hypothesis on a July 21 image captured by the Hubble Space Telescope and shared by NASA.

Hubble has taken the clearest image to date of the interstellar comet 3I/ATLAS, which is racing through our solar system at ...

NASA’s Hubble Space Telescope has captured the sharpest-ever view of the interstellar comet 3I/ATLAS, revealing clues about ...

An interstellar comet spotted by NASA is headed for our solar system, showing up near Earth later this year, but it's another ...

"We should put all possibilities on the table that it's a rock, a comet, or something else until we get the evidence, the ...

Our new results provide the strongest evidence yet that at least some Halley-type comets carried water with the same isotopic ...

Comet 12P/Pons Brooks shows a D/H water ratio matching Earth’s oceans, revealed through ALMA and NASA IRTF observations.

The Hubble Space Telescope has captured the best picture yet of a high-speed comet visiting our solar system from another ...

Chemical profiling traces the source of water in one of the brightest known comets to keep returning to the Solar System.