Astronomers Say Pluto Is Not a Planet
By Shankar Vedantam
Washington Post Staff Writer
Thursday, August 24, 2006; 2:12 PM
The solar system now has only eight planets, an international group of astronomers announced today, after taking a vote to demote Pluto from planetary status.
The move came after years of scientific and public debate, and three quarters of a century after scientists first announced they had found a ninth planet at the outer edges of the solar system.
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