Astronomy Picture of the Day: First untethered space walk

#OTD in 1984, astronaut Bruce McCandless stepped out of the space shuttle Challenger and used the Manned Maneuvering Unit to make the first untethered space walk, A third generation U.S. Navy officer, both his father and grandfather were Medal of Honor recipients. pic.twitter.com/qZRWIFlL8u

— U.S. Naval Institute (@NavalInstitute) February 7, 2024