About 66 million years ago, an asteroid the size of Mount Everest, traveling at 45,000 mph (72,000 km/h), slammed into what is now the Yucatan Peninsula in Mexico. We can’t change the past, but what if the asteroid had missed us? What would the Earth look like if dinosaurs were still alive? Some scientists say that dinosaur numbers had been steadily declining for thousands of years before the asteroid hit, so they would have gone extinct on their own without a mass extinction. Still, early mammal populations might not have been suited to the environment and would not have adapted quickly enough. Timestamps: Basic information about the Earth during the time of the dinosaurs 1:38 What happened after the asteroid hit? 2:44 What if none of this had happened? 7:00 What would have happened if the dinosaurs had not gone extinct? 7:58 Music: End of Time. Ugonna Onyekwe Eine Kleine Nachtmusik (by Mozart). Mozart https://www.youtube.com/audiolibrary/... Summary: - Dinosaurs lived during the late Triassic, Jurassic, and Cretaceous periods of the Mesozoic Era, which spans 180 million years. Earth had a very warm climate at the time, with mild seasonal changes and no polar ice. The supercontinent Pangea was just beginning to break up into smaller landmasses that, over millions of years, would become the seven continents we know today. - That infamous asteroid - essentially a giant space rock - became a fireball when it encountered the friction and gravity of Earth's atmosphere, slamming into Earth with a force of 100 million megatons. Smaller species that lived in the Western Hemisphere were able to survive the heat underground. But the big guys, like Triceratops and Tyrannosaurus, were baked alive. — The asteroid would have continued on its way, it would not have been pulled in by Earth's gravity, it would not have affected the planet in any way, and the dinosaurs would have lived out the rest of their natural lives peacefully. — In a purely hypothetical situation in which dinosaurs had not died out, their brains would have continued to adapt and evolve along with their bodies. Some scientists say that dinosaur numbers had been steadily declining for thousands of years before the asteroid hit, so they could have gone extinct on their own, without a mass extinction. Subscribe to AdMe: http://goo.gl/DgUonf ---------------------------------------------------------------------------------------- We are on social media: 5-Minute Crafts on Youtube: https://www.goo.gl/8JVmuC ---------------------------------------------------------------------------------------- More great articles and videos at http://adme.ru/