What if Earth and the Moon Were Hit by Twin Asteroids?
ES2506  Cosmic Collisions

Over the past four and a half billion years, Earth and the moon have been bombarded by interplanetary debris. The incoming debris ranges in size from dust-sized particles to objects the size of small planets. Following a period of heavy bombardment that formed the early Earth and moon, these impacts have continued at a fairly steady rate for the past three billion years.

An inbound asteroid approaches the Earth-moon system.
1. Predict what would happen if twin asteroids, each 1000 meters in diameter, were to collide with Earth and the moon. Include a description of the impact craters you would expect to see on each body.

2. What do you think the two craters would look like ten million years in the future?

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