Kuu pinnase läbitungimismõõturi kavandas NASA, et see kukuks Kuu õhuliini orbiidil olevalt kosmosesüstikust Kuu pinnale ja edastaks kosmoseaparaadile vastavat teavet.
It was designed by NASA to be dropped onto the surface from a vehicle orbiting overhead and transmit information to the spacecraft. However, despite it being proposed for several lunar and planetary missions, the device was never actually fielded by NASA.
