Lunar Prospector (Artist's Concept)
Jet Propulsion Laboratory https://www.jpl.nasa.gov/ Jan. 8, 1998
This artist's concept of the Lunar Prospector shows the spacecraft in lunar orbit. Instrument masts are fully deployed.
Lunar Prospector spent about a year and a half studying and mapping the Moon. After its mission was complete, was deliberately crashed into the Moon's south pole to look for evidence of water ice. None was observed.