Meteorite Impacts and Extinctions
• Just couldn’t skip it this year…
• What is a meteorite?
• Where do they come from?
• Impacts and their after-effects
• Meteorite impacts and mass extinctions in geologic time
• Monitoring NEOs
What is a meteorite?
•Meteorite = fragment of extraterrestrial material that strikes the surface of Earth
•Meteoroid = before it hits the ground (i.e., a small, solid body floating in space)
•Meteor = fragment as it makes its way through the atmosphere (“shooting star”)
•“Fall” = meteorite falls to the ground and its descent is witnes