Satellite Expected to Hit Earth Sometime Friday

A 6-ton NASA satellite is expected to crash land on Earth sometime this afternoon or early evening. Scientists say they aren't exactly where the satellite will land, but say since nearly three quarters of the world is covered in water, it is likely to splash onto earth. NASA says the satellite is about the size of a bus, and is expected to break into more than 100 pieces. Most of the satellite will burn up as it enters the atmosphere, however 25 large metal chunks are expected to survive and scatter on the earth. The satellite was launched 20 years ago from the space shuttle Discovery.