The High Energy Astronomy Observatory (HEAO A) satellite, 1977.

NASA

The High Energy Astronomy Observatory (HEAO A) satellite, 1977.
3 5 c m
40cm
actual image size: 32cm x 27cm

Description

The satellite, seen here undergoing pre-flight check out, was launched on 12th August 1977. It mapped the sky at X-ray wavelengths, increasing the number of known X-ray sources from 500 to 1500. Two more HEAO satellites were launched in November 1978 and September 1979.

© National Aeronautics & Space Administration / Science & Society

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