Student Dust Counter

Explanation: The Student Dust Counter (SDC) on New Horizons has three main goals: (1) To map dust distribution and density during the spacecraft's journey through the outer solar system; (2) To help scientists understand variation in where different-sized particles are located in the solar system; and (3) To determine how fast the Kuiper Belt produces dust. This picture shows some of the SDC team next to the finished instrument and some of the testing equipment.

Pluto

Image credit: Laboratory for Atmospheric and Space Physics.