PRAGUE, Czech Republic (AP) -- Leading astronomers have declared that Pluto is no longer a planet in approving new guidelines that downsize the solar system from nine planets to eight.
The International Astronomical Union, meeting in Prague, stripped Pluto of the planetary status it has held since 1930, when it was discovered.
In doing so, the group provided a new definition of what is -- and what isn't -- a planet.
Astronomers have been trying to draw a distinction between the eight "classical planets" -- Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune -- and Pluto, which is smaller than Earth's moon and has an eccentric orbit.
Well shit.
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