The 80-meter (262 feet) wide asteroid makes its closest approach to Earth on Saturday afternoon in the United States. It will be about 975,000 kilometers (604,500 miles) away, said Don Yeomans, a planetary scientist at NASA's Jet Propulsion Laboratory in California. That's about 2 1/2 times the distance from the Earth to the moon.
"It's a pretty good size, but it's not getting that close, at least by recent standards," Yeomans said.
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Comet "Marsageddon"is expected to impact planet Mars in 2014.It's impact will be the equivalent of 1 billion megatons of TNT.Scientists say that if the earth was hit by a comet this size civilization as we know it would end.We can hope nothing like that is in store for us.
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