What Are Ice Cores?

A meteor is a piece of space rock that enters the atmosphere and burns up in the atmosphere. It's because meteors typically travel at very high speeds, between 20 to 70 kilometers per second. You can even detect unknown volcanic explosions, eruptions, ye, in the intherear te that leave behind the signatures in the ice cors,. So that is what ice cores are. How long do they last? They last as long as the ice sheets last, ye. That's why people go and study them.