A meteor is a meteoroid that has entered the Earth's atmosphere, usually making a fiery trail as it falls. It is sometimes called a shooting star. Most burn up before hitting the Earth. A meteorite is a meteor that has fallen to Earth. Meteorites are either stone, iron, or stony-iron.
Meteoroids are tiny stones or pieces of metal that travel through space.
A million is a thousand thousand. The dinosaurs lived millions of years ago. The Miocene epoch was a geologic time span that lasted from 24 million to 5 million years ago. Kelp forests appeared in the seas. The Bering land bridge formed during the Miocene, connecting Russia and Alaska, allowing many animals to migrat across continents.