Till date the scientists believed that it was an asteroid or a huge volcanic eruption that wiped out the dinosaurs. Recently, after a lot of research it was concluded that the culprit, maybe, was a speeding comet.

Now, some of you might be wondering what is the difference between an asteroid and a comet? Asteroids are made up of metals and rocky material, while comets are made up of ice, dust and rocky material.

The area of the scientific research was a crater in the Yucatan peninsula in Mexico. The scientists checked for metal deposits and found out that it is much lower than earlier thought. Hence, the change in earlier theory.