Is Pluto still not a planet again?

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Pluto might not be a planet anymore, according to the definition of planethood adopted by the International Astronomical Union in 2006, but the icy little orb on the edge of the solar system still has a lot going on. Today NASA’s Hubble telescope has discovered a 4th moon around the new non-planet. The space telescope was searching for rings around the planetary oddball at the edge of our solar system when it came across P4, the temporary name for the newly discovered moon. With an estimated diameter of 8 to 21 miles, P4 is the smallest of Pluto’s four moons, the U.S. space agency said in a statement.

Pluto’s largest moon, Charon, is 648 miles across, and its other moons, Nix and Hydra, are in the range of 20 to 70 miles in diameter. P4 was found orbiting between Nix and Hydra which were both discovered by the Hubble telescope in 2005. Charon was discovered in 1978 at the US Naval Observatory.  Continue reading “Is Pluto still not a planet again?” Is Pluto still not a plan…