Skylab 1 hi-res stock photography and images - Alamy
Skylab 4 hi-res stock photography and images - Alamy
Con Stoitsis on Twitter: "On this day in 1973 Comet Kohoutek-Skylab became the first comet photographed from space. NASA picture. https://t.co/B7matE7tOT" / Twitter
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1974 NASA Photo Comet Kohoutek As Seen By Skylab 4 Crew | eBay
Skylab
Skylab 4 Crew Televised Communication | NASA
Skylab | The Space Collective
File:Skylab astronauts talk to comet discoverer Kohoutek.jpg - Wikimedia Commons
Skylab: The flown and unflown missions - RocketSTEM