Follow along for live results from the New Hampshire primary

Johns Hopkins University

Ready for Pluto's close-up

Ready for Pluto's close-up

After traveling across more than 3 billion miles of space for nine years, NASA’s New Horizons spacecraft is about three months away from its closest approach to the dwarf planet Pluto. At its closest approach in July, New Horizons will fly within 7,700 miles of Pluto, enabling the spacecraft to take extremely detailed images.

Designed and built by students at the University of
Colorado, Boulder, the counter detects dust grains
produced by collisions among asteroids, comets
and objects within the Kuiper Belt.

*Pending NASA approval

On average, the instruments onboard consume
between 2 and 10 watts — about the power of a
night light...