NASA Missions May Re-elevate Pluto and Ceres to Full-On Planet Status

Launch of New Horizons, the mission to Pluto, atop the mighty Atlas V rocket from Cape Canaveral Air Force Station, Fla., on Jan. 19, 2006. (NASA Kennedy)
Launch of New Horizons, the mission to Pluto, atop the mighty Atlas V rocket from Cape Canaveral Air Force Station, Fla., on Jan. 19, 2006. (NASA Kennedy)

Ceres is the largest object in the asteroid belt, and NASA’s Dawn spacecraft will arrive at this dwarf planet on March 6, 2015. Pluto is...

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