During this period, the Hadean ... they collide, the impact instantly vaporizes the early ocean, melts part of Earth’s crust, and scatters iron from the asteroid throughout the ...

This impact unleashed about 130 times the energy ... in diameter, larger than the asteroid that struck Earth 66 million years ago and doomed the dinosaurs. "When the impacting asteroid or comet ...

Asteroid Impact on Moon Blasted Two Grand Canyons ... The outer part of our planet is comprised of continent-sized plates of rock that move very slowly. At points where they meet, one plate ...