OAO-3

Credit - NASA

Copernicus diagram

Credit - NASA

HEAO-1

Credit - NASA

HEAO-1 x-ray map of the sky

Credit - NASA

HEAO-3 High Resolution Gamma-Ray Spectrometer

Credit - "NASA, Dr. William Mahoney, JPL"

Astronaut Musgrave on Remote Manipulator System arm

Credit - NASA

Stellar swarm M80 (NGC 6093)

Credit - NASA

Portion of the Cygnus Loop supernova remnant

Credit - NASA

GRO is grappled by the remote manipulator system

Credit - NASA

Chandra captures image of remnant of star-shattering explosion

Credit - NASA