asteroid killed dinosaurs

Asteroid dust caused 15-year winter that killed dinosaurs: study

31Oct

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Technology

Asteroid dust caused 15-year winter that killed dinosaurs: study

[ad_1] Around 66 million years ago, an asteroid bigger than Mount Everest smashed into Earth, killing off three quarters of all life on the planet -- including the dinosaurs.This much we know. But exactly how the impact of the asteroid Chicxulub caused all those animals to go extinct has remained a matter of debate. The leading theory recently has been that sulphur from the asteroid's impact -- or soot from global wildfires it sparked -- blocked out the sky and plunged the world into a long, dark winter, killing all but the lucky few.However research published Monday based on particles found at a key fossil site reasserted an earlier hypothesis: that the impact winter was caused by dust kicked up by the asteroid.Fine silicate dust from pulverised rock would have stayed in the atmosphere...

Dinosaurs were in the prime when the asteroid struck, study reveals

[ad_1] A new study has shed light into the living conditions of dinosaurs during the time they went extinct. Here's how they fared. Dinosaurs dominated the Earth millions of years ago during the Mesozoic Era. This included three consecutive geological periods - Triassic, Jurassic, and Cretaceous Periods, during which different species of these creatures inhabited the Earth. But how did these predatory creatures go extinct? Well, Paleontologists believe their extinction process started when an asteroid struck the Earth nearly 65 million years ago. Now, a new study has revealed that dinosaurs were in their prime when the fateful asteroid struck, sending them into extinction.The study revealed that dinosaurs were in the prime of their lives during the late Cretaceous period when the aste...

What if the dinosaurs hadn’t been wiped out by an asteroid?

[ad_1] An asteroid wiped out the asteroids and if that had not happened, our world might look very different. Sixty-six million years ago, an asteroid hit the Earth with the force of 10 billion atomic bombs and changed the course of evolution. The skies darkened and plants stopped photosynthesising. The plants died, then the animals that fed on them. The food chain collapsed. Over 90% of all species vanished. When the dust settled, all dinosaurs except a handful of birds had gone extinct.But this catastrophic event made human evolution possible. The surviving mammals flourished, including little proto-primates that would evolve into us. Imagine the asteroid had missed, and dinosaurs survived. Picture highly evolved raptors planting their flag on the moon. Dinosaur scientists, discover...