Apocalyptic asteroid that wiped out the dinosaurs 'hit with force of 10bn nukes and blotted out the Sun', study finds

, study findsTHE GIANT asteroid that wiped out the dinosaurs crashed into the planet and causes wildfires, tsunamis and so much atmospheric sulphur that day turned to night.

Professor Sean Gulick, a geoscientist at The University of Texas at Austin, said: "They are all part of a rock record that offers the most detailed look yet into the aftermath of the catastrophe that ended the Age of Dinosaurs."Credit: International Ocean Discovery ProgramSome were burned alive or drowned but most froze and starved to death.

The team conducted their work aboard a boat that was converted into a 40 foot high drilling station standing on three pillar-like legs.They dug into the crust to collect their cylindrical samples.There was evidence of rocks being vaporised when the six mile wide asteroid hit and this vaporisation would form sulphate aerosols in the atmosphere, resulting in cooling on a global scale.

The crater was filled with debris in hours - either produced at the impact site itself or swept in by seawater pouring in from the surrounding Gulf of Mexico. Prof Gulick explained: "The presence of charcoal in the uppermost layers suggests the existence of impact-induced wildfires, whereas the absence of sulphur-rich evaporites from the deposit suggest the impact released a large amount of sulfate aerosols that could have caused global cooling and darkening."Prof Gulick said: "The real killer has got to be atmospheric. The only way you get a global mass extinction like this is an atmospheric effect.

Crater specialist Prof Jay Melosh, of Purdue University, who was not involved in the study, said: "It was a momentous day in the history of life.Why did the dinosaurs die out?It wiped out roughly three-quarters of our planet's plant and animal species around 66million years ago

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