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Scientists Think Big Object Whacked Mars

By ALICIA CHANG,
AP
Posted: 2008-06-26 06:55:31
Filed Under: Science News
LOS ANGELES (June 25) - Why is Mars two-faced? Scientists say fresh evidence supports the theory that a monster impact punched the red planet, leaving behind perhaps the largest gash on any heavenly body in the solar system.

Today, the Martian surface has a split personality. The southern hemisphere of Mars is pockmarked and filled with ancient rugged highlands. By contrast, the northern hemisphere is smoother and covered by low-lying plains.

Three papers in Thursday's journal Nature provide the most convincing evidence yet that an outside force was responsible.

According to the researchers, an asteroid or comet whacked a young Mars some 4 billion years ago, blasting away much of its northern crust and creating a giant hole over 40 percent of the surface.

New calculations reveal the crater known as the Borealis basin measures 5,300 miles across and 6,600 miles long -- the size of Asia, Europe and Australia combined. It's believed to be four times bigger than the current titleholder, the South Pole-Aitken basin on Earth's moon.

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THE FACE ON MARS

DID TOM CORBETT PREDICT THE “TETRAHEDRONS” OF MARS?

WAS THE "FACE" PREDICTED BY COMIC ARTIST JACK KIRBY?

CHECK OUT:  http://www.enterprisemission.com/forbidden-planet.htm

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