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NASA's Flying Observatory 747 SOFIA first research flight over Europe to study black holes - RadarBox.com Blog
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NASA Has Retired Its Boeing 747SP SOFIA Airborne Observatory After Eight Years Of Scientific Activity - The Aviationist
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SOFIA' is a Boeing 747 SP with a Telescope – Basically it's a Flying Observatory! #NASA « Adafruit Industries – Makers, hackers, artists, designers and engineers!
![26 January 2021, Hamburg: Behind the open hatch, the reflecting telescope of the flying stratospheric observatory "SOFIA" can be seen inside a converted Boeing 747 during final checks at Lufthansa Technik. The 26 January 2021, Hamburg: Behind the open hatch, the reflecting telescope of the flying stratospheric observatory "SOFIA" can be seen inside a converted Boeing 747 during final checks at Lufthansa Technik. The](https://c8.alamy.com/comp/2E92C3H/26-january-2021-hamburg-behind-the-open-hatch-the-reflecting-telescope-of-the-flying-stratospheric-observatory-sofia-can-be-seen-inside-a-converted-boeing-747-during-final-checks-at-lufthansa-technik-the-stratospheric-observatory-for-infrared-astronomy-sofia-is-a-boeing-747-converted-into-a-flying-telescope-by-the-us-space-agency-nasa-and-the-german-aerospace-center-dlr-it-has-been-undergoing-maintenance-at-the-lufthansa-technik-base-in-hamburg-in-recent-weeks-photo-christian-charisiusdpa-2E92C3H.jpg)