How about some good news for Monday morning. The likelihood of Apophis, a 320 meter (diameter) asteroid, hitting the Earth by 2036 has been reduced from 1 in 5,500 to 1 in 24,000 after new measurements taken by the Arecibo Observatory in Puerto Rico. Apophis will come close to our planet in 2029, within 5.93 Earth radii; and unless something irregular happens, will harmlessly float by. While a 320 meter asteroid is not an "Earth killer", impact would still cause considerable damage.