SUMMARY: Researchers have built a computer simulation that better predicts how large asteroids will interact with the Earth's atmosphere. They found that more asteroids blow up in the atmosphere than previously thought, reducing the risk of them hitting populated areas or causing tidal waves. Their model says that an asteroid has to be 200 metres in diameter or above before it can get through the atmosphere, and these only hit the Earth once every 170,000 years.
View full article
What do you think about this story? post your comments below.