Earth. Fall/fell. rock . Asteroid. Skin. Pattern. Scientist. Disappear
Some scientists study space. They look for..... made by the stars.
Sometimes .....fall from other planets and fly through space.
These rocks are called....
A big one .....on planet.....65 million years ago.
Some people think this is why the dinosaurs....
Scientists have found dinosaur skeletons, but haven't found any dinosaur...