An overhead view of the Skylab Orbital Workshop in Earth orbit, focused on the Apollo Telescope Mount, as photographed from the Skylab 4 Command and Service Modules (CSM) during the final fly-around by the CSM before returning home. The space station is contrasted against the pale blue Earth.
NASA
Taken on 8 February 1974
<a rel="nofollow" class="external free" href="https://images.nasa.gov/details-sl4-143-4706">https://images.nasa.gov/details-sl4-143-4706</a>; originally from <a rel="nofollow" class="external free" href="http://grin.hq.nasa.gov/ABSTRACTS/GPN-2000-001055.html">http://grin.hq.nasa.gov/ABSTRACTS/GPN-2000-001055.html</a>