Dust has been a worry for New Horizons ever since a team led by Mark Showalter discovered Pluto's fourth moon two years ago. Further intense searches of the Pluto system yielded the announcement of a fifth moon and the intensification of the worry a ...View Complete Story
+ The Pluto system appears to be far safer than early fears and initial calculations indicated when the new moons began popping up. In fact, the best current models predict a 0.3% (1-in-300) chance of a mission-ending impact near closest approach on ...View Complete Story
In July, NASA said that its Hubble Space Telescope <a href="http://www.huffingtonpost.com/2011/07/20/new-pluto-moon-hubble-space-telescope_n_904578.html" target="_hplink">discovered an eight to 21-mile-wide moon</a> circling the dwarf planet.View Complete Story
One of the goals would be "to develop a sustained human presence on the moon and Mars," according to the draft, which is expected to come under discussion at a House Science space subcommittee hearing on Wednesday. NBC News received a copy of ...
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