Potentially Dangerous Asteroid Spotted Passing Earth
April 30, 2010 | Source: Space.com
Asteroid 2005 YU55 — about 1,300 feet (400 meters) in size — came within 1.5 million miles (2.4 million km) of the Earth and is expected back Nov. 8, 2011.
New observations at Arecibo have allowed astronomers to rule out any chance of 2005 YU55 hitting Earth in the next 100 years.