Вставьте слова.

Some scientists study space. They look for ______ made by the stars. Sometimes ____ fall from other planets and fly trough 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 _______.

Слова для справок:  Asteroid, disappear, Earth ,fall / fell , pattern , rock, scientist , skin .