About 4. 6 billion years ago, the Solar System formed from a cloud of dust and gas collapsing in on itself due to gravity.

Geophysicists have modeled how Earth’s magnetic field could form even when its core was fully liquid. By removing the effects ...

For the first 2 billion years of life on Earth, our planet was dominated by single-celled bacteria and their cousins, archaea. It was Slimeball Earth, and it would have stayed that way were it not for ...

More than two billion years ago, Earth experienced one of the most important turning points in its history: the rise of ...

The mystery of how life on Earth originated , and whether it exists elsewhere in the universe, are "the raison d’être of space exploration", said Louis Friedman, co-founder of the Planetary Society.