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On this mission the first untethered space walks were carried out by McCandless and Stewart, using the manned maneuvering unit.
The Stars and Sun Are Everywhere': 50 Years of Spacewalks, Smart News
Wonders All Around – Bruce McCandless III
Wonders All Around – Bruce McCandless III
Physics in Your World Archive - Page 1
Les collections de Sassa - Navette Spatiale Challenger
Challenger STS 41-B / First MMU EVA and first KSC landing - Screenshots
STS-41B - NASA
STS-41B : NASA : Free Download, Borrow, and Streaming : Internet Archive
Vintage Circa 1980's to 1990's Space Shuttle Challenger STS-41B NASA Collectible Crew Patch - Israel
Space Shuttle Challenger Patch
APOD: 2009 September 27 - To Fly Free in Space
Lot Detail - NASA Photo from Space Shuttle STS-41B Showing Challenger Returning to Kennedy Space Center
