60 years ago, a spin-stabilized spherical silver satellite soared into space and successfully studied the sky!
Launched April 3, 1963, @NASAGoddard's Explorer 17 measured the density, composition, pressure, and temperature of Earth's upper atmosphere: go.nasa.gov/3Kmz2Ah
#NASAhistory
Explorer XVII Satellite
Weighing 405 lbs. (184 kg), this 35-inch (89-cm) pressurized stainless steel sphere measured the density, composition, pressure and temperature of Earth's atmosphere after its launch from Cape Canaveral on April 3, 1963.NASA
BattyKat ðĶðââŽðĶ (She/Her)
in reply to NASA • • •