Water found on Comet 12P/Pons-Brooks is "virtually indistinguishable" from water found on Earth. A "devil" comet's water is ...

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

A recent study published in Nature Astronomy has delivered the clearest evidence yet that some comets carried Earth-like ...

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

In 2024, scientists studying ancient sediments in the eastern United States reported signs of a comet exploding in Earth’s ...

A recent study claims to have found new geochemical evidence of an Earth-altering comet impact at the end of the last ice age ...

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

For centuries, people have wondered where Earth’s vast oceans came from. Our planet didn’t form with much water, yet today it ...

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

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

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

Each of Comet Izumi’s unknown orbits from the Oort Cloud is speculated to take just under a billion years. The comet has, ...