Discovered last month by a telescope in Chile, the comet known as 3I-Atlas is only the third known interstellar object to ...

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

The discovery renews the debate about how Earth got its oceans. If comets like 12P/Pons-Brooks carried water to our young ...

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

While observing the Halley-type comet 12P/Pons-Brooks with ALMA and NASA's Infrared Telescope Facility, researchers ...

A massive comet trail may have caused climate upheaval on Earth more than 12,000 years ago, sparking the Younger Dryas.

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

Brooks, the "devil comet," reveals that its water vapor possesses a chemical composition nearly identical to Earth's oceans.

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

The comet's approach toward Earth coincides with a total solar eclipse on April 8. Around that time, 12P/Pons-Brooks will be at or near perihelion, the point during orbit when it's closest to the sun.

A rare, green comet will shoot across Earth's skies. Here's how to watch. You may be able to spot the object in a clear, moonless sky -- especially with binoculars or a telescope Updated January ...

The bright K2 comet — previously the farthest active comet ever spotted — approaches the Earth on July 13 and 14. Here's what it is and how to see it.