Seeing is believing. But seeing a huge rock half the size of Earth smash into Jupiter in July 1996 was incredible . Can you imagine what would happen if Earth collided with a huge space rock ? It would be disastrous . In fact, it is thought that a meteor killed the dinosaurs millions of years ago.
A rock like the one that hit Jupiter could split Earth in two. Doing nothing about it is like waiting for the end of the world. So scientists plan to start a project to identify all space rocks that could hit Earth.
