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En-Route
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In 2029, the 1,000-foot (320-meter) asteroid 99942 Apophis (2004 MN4) will whiz by Earth at a distance of about 18,600 miles (30,000 kilometers).
If the 1,300-foot-wide space rock passes through a 2,000-foot-wide orbital "keyhole" in 2029, it could slam into Earth during a later encounter on April 13, 2036, experts say. Impact anywhere in the Pacific Basin would spark a tsunami that could do $400 billion worth of damage.
Currently, the risk of impact is set at 1 out of 6,250, but observations scheduled this weekend could take some of the uncertainty out of the orbital predictions. "With successful radar observations, there's a 50 percent chance that the 2036 impact possibility will go away," says Don Yeomans, manager of NASA's Near-Earth Object Program Office.
http://www.b612foundation.org/about/welcome.html
In 2029, the 1,000-foot (320-meter) asteroid 99942 Apophis (2004 MN4) will whiz by Earth at a distance of about 18,600 miles (30,000 kilometers).
If the 1,300-foot-wide space rock passes through a 2,000-foot-wide orbital "keyhole" in 2029, it could slam into Earth during a later encounter on April 13, 2036, experts say. Impact anywhere in the Pacific Basin would spark a tsunami that could do $400 billion worth of damage.
Currently, the risk of impact is set at 1 out of 6,250, but observations scheduled this weekend could take some of the uncertainty out of the orbital predictions. "With successful radar observations, there's a 50 percent chance that the 2036 impact possibility will go away," says Don Yeomans, manager of NASA's Near-Earth Object Program Office.
http://www.b612foundation.org/about/welcome.html
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