The Biggest Asteroids To Ever Hit Earth… Were Bigger Than The Dinosaur Killer !

追加: 2026-05-20

[00:00:00]What's the largest asteroid that ever [music] hit Earth? You probably think it was the one that killed the dinosaur, but it wasn't. Most asteroids burn harmlessly in the [music] Earth's atmosphere, but then there are city killers, around 50 to 150 m wide. In [music] 1908, one exploded over Siberia with a force of 50 megatons of TNT, flattening 80 million trees. Then comes [music] the country killer, around 1 km wide, and beyond that, planet killers, asteroids over 10 km across. The dinosaur asteroid [music] was roughly 10 km wide, but 1.8 billion years ago, an asteroid [music] of 15 km wide struck what is now Canada, creating the giant Sudbury [music] Basin. Around 2 billion years ago, a 20 km wide asteroid hit what is now South Africa, [music] creating an enormous crater. Back then, Earth had only microscopic life in ocean. [music] If these same asteroids hit modern Earth today, civilization would likely collapse. Subscribe [music] to find how humans plan to stop a planet killer before it hits Earth.