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.
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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