A massive asteroid the size of a mountain soared past Earth on Monday, giving astronomers their first chance to learn about the giant rock. Amazingly, they discovered it has its own moon. With asteroid 2004 BL86 traveling at 35,000 mph (56,300 km/h), scientists were able to detect at least one moon traveling with it. They discovered new measurements for the space rock, which totals 1,100 feet (325 meters) across and 1,800 meters in diameter.
Posted on: Tue, 27 Jan 2015 08:34:55 +0000
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