NASA will use the unmanned LADEE explorer to study the moon's delicate atmosphere and learn about similar space bodies.
3 of 6
Lunar dust experiment (LDEX) is an instrument that will collect and analyze samples of lunar dust particles in the moon's fragile atmosphere. The measurements, according to NASA, will help scientists answer an old question: Was lunar dust responsible for the pre-sunrise horizon glow seen by Apollo astronauts? Scientists believe the dust is the result of billions of years of meteor impacts that are responsible for the moon's cratered surface. LDEX can be found on LADEE's upper deck.