We will examine how geologists recognize and study asteroid and comet impacts in Earth's past. We will also investigate the occurrences of meteorite falls in Georgia including the recent McDonough meteorite. And we will explore the record of much larger impacts preserved in the rocks of our state, including the fallout from the Chesapeake Bay impact 35.5 million years ago that rained down across the Coastal Plain and the enormous 220-kilometer-diameter Roosevelt impact structure that formed more than 800 million years ago when a rock almost 30 kilometers wide penetrated the crust of west-central Georgia.