Pluto's Moons Offer Secrets and Threaten Danger

Four out of the five moons of Pluto have been discovered in the last ten years -- two of them after the New Horizon's spacecraft began its 9-and-half-year journey to the dwarf planet. Could there be more uncharted moons and hidden dangers lurking?

Published On 06/22/2015
7:00 AM EDT
This artist's concept shows the New Horizons spacecraft as it approaches Pluto and its three moons in July. | NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute