Scientists Say There Is a Four Percent Chance Asteroid Could Hit Mars

The chances are getting better than an asteroid will gouge a half-mile chunk out of the Red Planet.

Scientists have upgraded the likelihood of a direct hit from
asteroid 2007 WD from a 1-in-75 chance to 1-in-25. It's still a
long shot, but those odds have many scientists giddy at the thought
of cosmic fireworks. The head of NASA's Near-Earth Object Program
says the crash would be "cool."

A Ph.D. student scoured through archives to come up with data
used to recalculate the odds the football field-sized rock will add
a new crater to the Red Planet's surface.

If the impact happens, it would likely slam north of where the
rover Opportunity has been exploring since 2004.

The asteroid poses no threat to Earthlings.

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