'Some scientists believe the dinosaurs died out when one of these interstellar objects struck the Earth'
an asteroid
THE As: Some scientists believe the dinosaurs died out when one of these interstellar objects struck the Earth
Some scientists believe the dinosaurs died out when one of these interstellar objects struck the Earth
Some scientists believe the dinosaurs died out when one of these interstellar objects struck the Earth
THE "A"s
an asteroid
THE "A"s