HOMEWORK!!

SCIENCE

Asteroid is generally used to indicate a diverse group of small celestial bodies in the solar system that orbit around the Sun. 65 million years ago, a rock the size of Mt. Everest hit the earth. That’s the wonder that demise of Dinosaurs. Earth has a long history of getting in the way of asteroid. Asteroid can destroy 80~90% of the species that are on Earth, though it depends on size. Asteroid, the Apophis passes through the earth in 2029, but it’s like predicting a hurricane. If that asteroid passes though the keyhole, 7years later, 2036 will hit the earth. It will pass 10 times closer to us than the moon.

When I watched this program, I felt so scary, because I had never heard about that.
Always I forget that Earth is the one of planets, and someday it does disappear, though it’s hard to imagine. I don’t have much knowledge about solar system that I can’t understand that situation well, but now we have known about Apophis which is going to hit Earth in 2036, so we do need to know more details correctly.