Friday, August 05, 2005


Astronomers have found a new world bigger than Pluto in the outer reaches of the solar system. Some are calling it "the 10th planet." Amateur astronomers can see this new world, temporarily named 2003 UB313, through backyard telescopes--but don't expect much. At a distance of 97 AU from the sun, 2003 UB313 looks like a dim 19th-magnitude speck:

"After reading about 2003 UB313, I could not resist trying to take an image of it," says Eric J. Allen of
Champlain, Qu├ębec. He used his 14-inch telescope and a CCD camera to capture the image above on July 31st. The 10th planet is circled in red.

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