For roughly 2 billion years of Earth's early history, the atmosphere contained no oxygen, the essential ingredient required ...

Conventionally, the moon is thought to have formed during one big impact, but a three-impact model might make more sense ...

A major study shows complex cells evolved gradually in an oxygen-poor world, challenging long-held assumptions about life’s ...

Two perplexing structures deep inside Earth might be ancient remnants of our early planet, and they could hold clues about ...

A new study reveals that the asteroid 2024 PT5, which has been orbiting Earth for 2 months, may have a "lunar origin." However, it is about to break free from our planet, making it tricky to tell for ...

One of the most elegant theories about the origins of life on our planet is that it was kick-started by a delivery from outer ...

Theia, the world that helped form the Moon, came from the Solar System. Chemical clues in Earth and Moon rocks reveal this close origin.

The origin of life on Earth has been mulled over by scientists for centuries. We now know that life’s building blocks are RNA, amino acids, and cells. But if life originated from the primordial ooze ...

Two of the most intriguing questions in science are: How did life on Earth begin? and Is there life elsewhere in the universe? Given the enormous interest in these questions, you might expect that the ...

2024 PT5 is a near-Earth asteroid and is 11 meters in diameter (artist's impression shows a generic asteroid close to Earth). After just under two months in orbit, it's time to say goodbye to an ...