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Last updated on April 16, 2014 at 17:34 EDT

Visiting Mysterious Pluto

September 3, 2011

Dwarf planet Pluto is a world of mystery waiting to be visited for the first time. NASA’s New Horizons probe is racing across the solar system for a ground breaking close encounter that could dramatically alter what researchers “know” about Pluto and other small worlds.  credit:  NASA