Given the task definition and input, reply with output. Given a scientific passage and an answer, generate a question for the given answer.

Passage: Did you ever see a meteor shower, like the one in Figure below ? Meteors burn as they fall through the mesosphere. The space rocks experience friction with the gas molecules. The friction makes the meteors get very hot. Many meteors burn up completely in the mesosphere. Answer: they burn
What happens to meteors as they fall through the mesosphere?