There are three main types of meteorites: iron, stone, and stony-iron. A meteorite is a meteor that survives entry into the Earth's atmosphere and lands on the ground. Before entering the atmosphere, it is called a meteoroid, and as it burns up in the atmosphere it is a meteor. The largest meteorite found in America is the Willamette stone, discovered in Oregon. Certain museums, such as the Rice Museum in Hillsboro, have meteorite displays.