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 ...

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 ...

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/ 在你的一生中，会有原初黑洞穿过你吗？想象一下黑洞的形成——你可能会想到一颗巨大的恒星耗尽燃料、自我坍缩。然而，在早期宇宙的混乱状态下，可能有许多小黑洞在第一批恒星出现之前已经就形成了。虽然原初黑洞的质量远远小于后来由垂死恒星形成的恒星黑洞，但它们 ...

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