retractable (4)

• 

  Apollo Gamma Ray Spectrometer Boom and Housing

  August 1, 2021

• 

  Apollo Gamma Ray Spectrometer Actuating Boom

  August 1, 2021

• 

  Apollo 16 Gamma Ray Spectrometer Encasement

  August 1, 2021

• 

  Apollo 15 astronaut Jim Irwin’s EVA “Yo-Yo” used—and broken—on the lunar surface

  February 23, 2021