The new black hole has more than 200 times the mass of our sun – and is challenging theories of how objects form in space ...

According to his research, the collision did not homogenize Earth's mantle as previously believed. Instead, it created distinct layers, marking the beginning of Earth's geological evolution.

Collision between young Earth and Mars-sized planet might be why we’re all here today. By Mike Wehner. Published Jan 23rd, 2019 7:06PM EST. If you buy through a BGR link, we may earn an ...

Computer simulations suggest that a collision with another planetary object early in Earth’s history may have provided the heat to set off plate tectonics. By Lucas Joel Some 4.5 billion years ...