If you read the news today you will know that a space rock crashed into Russia causing some damage. They call that rock a meteorite. According to NASA, there is a giant sized astroid apporaching Earth. While the chance of it crashing into Earth is remote, no one expect a meteorite to crashed into Russia. But if that giant do crash, it will be almost end of everything.

http://news.yahoo.com/meteorite-not-end-world-strikes-russias-siberia-144416162.html