School children will have to take the “P” out of whatever mnemonic they use to help them remember the solar system’s planet lineup. That’s because astronomers decided on Thursday to nix Pluto from the group of nine planets under historic new guidelines that downsize the solar system. The International Astronomical Union withdrew Pluto’s planetary status in a true clash of the cosmos that came in the form of a week-long debate. Pluto has been considered a planet since 1930.
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Pluto Fails to Survive Planetary Cut
Posted by: Jennifer LeClaire August 24, 2006 10:50 AMSchool children will have to take the “P” out of whatever mnemonic they use to help them remember the solar system’s planet lineup. That’s because astronomers decided on Thursday to nix Pluto from the group of nine planets under historic new guidelines that downsize the solar system. The International Astronomical Union withdrew Pluto’s planetary status in a true clash of the cosmos that came in the form of a week-long debate. Pluto has been considered a planet since 1930.