Video may have killed the radio star but an international group of scientists have confirmed what was long suspected  — a massive asteroid smashed into the Earth, killing ALL the dinosaurs.

Not cave men.

Writing in prestigious Science Journal, the analysts reached the consensus that extinction was caused by a massive asteroid or comet smashing into Earth at Chicxulub on Mexico’s Yucatan Peninsula.

The BBC reports the explosive energy released was equivalent to 100 trillion tons of TNT – over a billion times more explosive than the atomic bombs dropped on Hiroshima and Nagasaki.

"The explosion of hot rock and gas would have looked like a huge ball of fire on the horizon, grilling any living creature in the immediate vicinity that couldn’t find shelter," said Dr Gareth Collins of the Imperial College of London, who coauthored the report.

But should we be worrying about another such attack from space extinguishing all humankind and get Bruce Willis ready to launch nukes from his space shuttle at the deadly planetoid?

While scientists estimate this type of lethal impact occurs on average about once every 100 million years, about five have occurred during the evolution of life on Earth.

Hmmmm…..we may be due.