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
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.