With water covering the majority of our planet, scientists have been wading through ideas to answer a fundamental question: Where did it all come from? A popular theory suggests asteroids or comets ...
It's a new twist on an old, and hotly debated, theory about the origins of life on Earth. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The ...
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Research using Apollo samples indicates late meteorite impacts were unlikely to be the main source of Earth’s water.
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