Flying at high altitudes above some light-blocking parts of the atmosphere, we’ve had a long history of using…

Originally shared by NASA

Flying at high altitudes above some light-blocking parts of the atmosphere, we’ve had a long history of using airplanes to study space. These airborne observatories have helped us conduct observations to learn about distant planets and objects for decades: https://go.nasa.gov/2DvPKwn #NASA60th