Earth in Danger 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.