Atoms found deep inside our planet argue that parts of “proto-Earth,” the early version of our planet, still survive inside ...

Scientists believe the moon was formed from the debris of a collision between Earth and the planet Theia, which was likely ...

Scientists believe the moon was formed from the debris of a collision between Earth and the planet Theia, which was likely located closer to the sun than Earth is now.

One fateful day about 4.5 billion years ago, a Mars-sized body called Theia collided with proto-Earth, turning both into a ...

The story of how the Moon came to be has always carried a touch of mystery. Picture the young Solar System as a restless place where new worlds grew from swirling gas, dust, and rock. In that chaotic ...