![Jonathan McDowell on Twitter: "Jonathan tracking the debris, protected by his 1979-vintage Skylab Protection Helmet, and wearing a message to the world https://t.co/kRm9QY3yXk" / Twitter Jonathan McDowell on Twitter: "Jonathan tracking the debris, protected by his 1979-vintage Skylab Protection Helmet, and wearing a message to the world https://t.co/kRm9QY3yXk" / Twitter](https://pbs.twimg.com/media/EpAkz4JVQAAOwsh.jpg)
Jonathan McDowell on Twitter: "Jonathan tracking the debris, protected by his 1979-vintage Skylab Protection Helmet, and wearing a message to the world https://t.co/kRm9QY3yXk" / Twitter
![Jonathan McDowell on Twitter: "The window is open. Put on your Skylab Helmets... https://t.co/YLefjDabjo" / Twitter Jonathan McDowell on Twitter: "The window is open. Put on your Skylab Helmets... https://t.co/YLefjDabjo" / Twitter](https://pbs.twimg.com/media/DZu2rlMX0AAaHT_.jpg)
Jonathan McDowell on Twitter: "The window is open. Put on your Skylab Helmets... https://t.co/YLefjDabjo" / Twitter
![Jonathan McDowell on Twitter: "OK let's do this... [genuine 1979 vintage cardboard Skylab helmet, thanks ebay!] https://t.co/fwCluh88Mi" / Twitter Jonathan McDowell on Twitter: "OK let's do this... [genuine 1979 vintage cardboard Skylab helmet, thanks ebay!] https://t.co/fwCluh88Mi" / Twitter](https://pbs.twimg.com/media/DZaeV98VwAAuJi9.jpg)
Jonathan McDowell on Twitter: "OK let's do this... [genuine 1979 vintage cardboard Skylab helmet, thanks ebay!] https://t.co/fwCluh88Mi" / Twitter
![Jonathan McDowell on Twitter: "Spot my Skylab Protection Helmet in the background on CNN this morning... https://t.co/U8mGc9Lyoq" / Twitter Jonathan McDowell on Twitter: "Spot my Skylab Protection Helmet in the background on CNN this morning... https://t.co/U8mGc9Lyoq" / Twitter](https://pbs.twimg.com/media/E04CM4WWYAUdBBP.jpg)
Jonathan McDowell on Twitter: "Spot my Skylab Protection Helmet in the background on CNN this morning... https://t.co/U8mGc9Lyoq" / Twitter
![Astronaut Owen Garriot working on the telescope mount, Skylab 3, August 1973 — Vintage NASA Photographs Astronaut Owen Garriot working on the telescope mount, Skylab 3, August 1973 — Vintage NASA Photographs](https://images.squarespace-cdn.com/content/v1/57c2bc73579fb31c1f966937/1628242018254-525FWPYX3BSD3U766SCW/BL30.jpg?format=2500w)