Scientists have said that if the deadly impact which contributed to the downfall of the dinosaurs had hit Earth 30 seconds earlier or later, then it would have hit ocean, causing much less chaos.

Up to three quarters of life on Earth was wiped out instantly from the asteroid, while the rest of the dinosaurs perished within years.

The space rock caused a cloud of dust to fill the air which blocked out the sun, leading to drastic and sudden climate change that ultimately created major food shortages across Earth.

But, if it had hit 30 seconds either side of when it did, the dinosaurs would probably have survived, according to a new documentary.