New research on Comet 67P indicates that its water may be similar to Earth's, contradicting earlier findings by Rosetta's ...

A reanalysis of the data from the "rubber-ducky" comet 67P, collected nearly a decade ago, suggests comets may have deposited a lot more water on Earth than scientists previously thought.

Water is fundamental to life on Earth, yet the origins of this vital resource remain a scientific puzzle. Researchers have ...

Recent studies show comet dust influenced earlier measurements of water’s origins on Earth, challenging previous findings.

NASA's new study on comet 67P suggests comets may have supplied water to Earth's oceans, challenging previous theories and reigniting debates on water origin. Where do Earth's oceans come from? The ...

The rocky bodies, which look like asteroids but act like comets, could comprise up to 60% of near-Earth objects.

Scientists have long debated how Earth became rich in liquid water after the planet formed about 4.5 billion years ago. Now a ...

Image of Comet 67P/Churyumov-Gerasimenko taken by ESAs Rosetta navigation camera. Comets may have been responsible for the presence of water on Earth, scientists have claimed, according to a new ...

Image of Comet 67P/Churyumov-Gerasimenko taken by ESAs Rosetta navigation camera. Comets may have been responsible for the presence of water on Earth, scientists have claimed, according to a new ...

When I asked readers on social media for suggestions about the coolest things they’ve seen in spaceflight during the last 25 ...

A humpback whale that had been thrilling boaters off Newport Beach, Ca., for several days breached for a prolonged period ...