Pluto probe peril

Out of the Fog, December 2012

As the Curiosity rover safely studies rocks on the surface of Mars, a NASA mission on route to Pluto may find itself on a treacherously rocky path. NASA announced last month that the $650 million New Horizons space probe’s planned trajectory during its July 2015 flyby could turn into a collision course with unknown moons and debris circling the dwarf planet—an unfortunate end to the mission’s three-billion-mile cosmic road trip.