@zhimengsun6:

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What if you were 500 miles away when the dinosaur-killer hit? 66 million years ago, an asteroid about 6 miles wide slammed into the coast of what is now Chicxulub, Mexico, at around 12 miles a second. It hit a shallow sea full of sulfur-rich rock, which turned out to be one of the worst places on Earth it could have landed. The crater it left is roughly 110 miles across and still buried under the Yucatán Peninsula today. From 500 miles away, there's no sound at first, just a blinding flash on the horizon and a fireball rising into the sky. Impact models suggest the heat from that fireball alone would be enough to set forests on fire. Within a few minutes, the ground starts shaking as the seismic waves arrive. About seven minutes after impact, rock that was blasted up toward space comes raining back down as burning debris. Then the blast wave arrives. Closer to the impact, giant tsunamis tore across the Gulf of Mexico. Around the world, soot, dust and sulfur filled the upper atmosphere and blocked out the sun. Temperatures dropped, plants struggled to grow, and food chains collapsed. Scientists call it an impact winter, and it likely lasted for years. Three out of four species on Earth went extinct, including every dinosaur except the ancestors of birds. The survivors were mostly small animals that could hide, burrow or eat whatever was left. With the dinosaurs gone, mammals spread out and eventually led to us. How do we know? In 1980, scientists found a thin layer of clay all over the world, rich in iridium, a metal that's rare on Earth's surface but common in asteroids. A decade later, the crater itself was identified buried under Mexico. In 2016, scientists drilled into its rim and pulled up rock from the impact. Visualization based on impact models (Collins, Melosh and Marcus, 2005). Timings are model estimates. Follow for more disasters you'd never want to see up close. #asteroid #dinosaur #extinction #History #Science #spacetok #earth #geology #whatif #fyp #crazy #scary
What if you were 500 miles away when the dinosaur-killer hit? 66 million years ago, an asteroid about 6 miles wide slammed into the coast of what is now Chicxulub, Mexico, at around 12 miles a second. It hit a shallow sea full of sulfur-rich rock, which turned out to be one of the worst places on Earth it could have landed. The crater it left is roughly 110 miles across and still buried under the Yucatán Peninsula today. From 500 miles away, there's no sound at first, just a blinding flash on the horizon and a fireball rising into the sky. Impact models suggest the heat from that fireball alone would be enough to set forests on fire. Within a few minutes, the ground starts shaking as the seismic waves arrive. About seven minutes after impact, rock that was blasted up toward space comes raining back down as burning debris. Then the blast wave arrives. Closer to the impact, giant tsunamis tore across the Gulf of Mexico. Around the world, soot, dust and sulfur filled the upper atmosphere and blocked out the sun. Temperatures dropped, plants struggled to grow, and food chains collapsed. Scientists call it an impact winter, and it likely lasted for years. Three out of four species on Earth went extinct, including every dinosaur except the ancestors of birds. The survivors were mostly small animals that could hide, burrow or eat whatever was left. With the dinosaurs gone, mammals spread out and eventually led to us. How do we know? In 1980, scientists found a thin layer of clay all over the world, rich in iridium, a metal that's rare on Earth's surface but common in asteroids. A decade later, the crater itself was identified buried under Mexico. In 2016, scientists drilled into its rim and pulled up rock from the impact. Visualization based on impact models (Collins, Melosh and Marcus, 2005). Timings are model estimates. Follow for more disasters you'd never want to see up close. #asteroid #dinosaur #extinction #History #Science #spacetok #earth #geology #whatif #fyp #crazy #scary

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