Scientific opinion was split over whether the extinction was caused by an asteroid or by volcanic activity in the Deccan Traps in what is now India, where there were a series of super volcanic eruptions that lasted around 1.5 million years.
The new study, conducted by scientists from Europe, the United States, Mexico, Canada and Japan and published in the journal Science, found that a 15-kilometre (9 miles) wide asteroid slamming into Earth at Chicxulub in what is now Mexico was the culprit.
The asteroid is thought to have hit Earth with a force a billion times more powerful than the atomic bomb
A billion atomic bombs? Pfft, that's nothing. One time I put eight atomic fireballs in my mouth at the same time and kept them there until they weren't hot anymore. This was on the schoolbus. Two kids were so impressed they gave me their milk money.
Thanks to ech0z, SmokieMcD, Drewblu, Lunarion, Victor, Rocketboy Gid, Johnny and Grace, who GOD WHY COULDN'T IT HAVE BEEN THE PRIMATES?!