Dinosaurs were wiped out by a giant asteroid the size of the Isle of Wight, a group of experts have concluded.

There have long been two main theories on why dinosaurs became extinct.

One is that a giant asteroid in Mexico wiped them out, and the other is that lots of volcanic 'super eruptions' in India caused them to die out.Now a group of 41 scientists have studied loads of evidence and they now believe that the asteroid theory is the right one.

To watch a video on where to find fossiles go there.

To follow a chat on this subject on BBC Newround click here.