Roger Lawrence Gibson

An illustration shows how, about 65 million years ago, a large asteroid collided with Earth. It hit what is today Mexico and created the Chicxulub crater. Mark Garlick/Science Photo Library/Getty Images

Curious Kids: Why are there so few impact craters on Earth?

Impact craters are relatively shallow, so these bowl-shaped “dents” in Earth’s rocky crust can be easily buried or erased by erosion.

Contact Roger for

  • General
  • Media request
  • Speaking request
  • Consulting / Advising
  • Research collaboration
  • Research supervision