Early Earth was hit by objects over 600 miles in diameter capable of "global sterilization" and "ocean vaporization," wrote the authors of a new study. The durable mineral zircon is the oldest ...

The Earth formed in a ring of debris around the Sun, like the one around Vega, a bright star, in this artist's conception. NASA/JPL-Caltech Curious Kids is a series for children of all ages.

Bob McDonald's blog: A Mars-sized object hitting a proto-Earth formed a new moon surprisingly quickly Bob McDonald · CBC Radio · Posted: Oct 14, 2022 12:36 PM PDT | Last Updated: October 14, 2022 ...

Recent simulations and research have unveiled a fascinating new insight into the history of the solar system’s terrestrial ...

Baby Earth, however, was nothing like the lush, green world we know today. Right when it formed, it was still molten from the collisions that created it.

Earth formed about 4.6 billion years ago, during the geological eon known as the Hadean. The name “Hadean” comes from the Greek god of the underworld, reflecting the extreme heat that likely ...

That's how scientists figured out that Earth's water probably arrived here due to comet impacts, billions of years ago. The ratio of H2O to HDO in Earth water and comet water is very similar.

Earth formed about 4.54 billion years ago, about 10 million years after the solar system was born. After a gigantic cloud of gas collapsed to make the sun, bits of that cloud were left over to ...

One theory held that the earth’s crust under the sea was and is formed at mid-ocean ridges from a single magma layer spread around the middle of the earth’s crust That’s now changed to the ...

In 1995, another geologist estimated the Earth formed about 60 million years after the solar system's birth. His data may have included an error, and did not agree with computer models of the ...