This iconic photograph is still considered one of the most-terrifying space photographs to date. Astronaut Bruce McCandless II became the first human to do a spacewalk without a safety tether linkd to a spacecraft. In 1984, he floated completely untethered in space with nothing but his Manned Maneuvering Unit keeping him alive.

Here are some fascinating details about Bruce McCandless' historic spacewalk:

*Mission Details:*

1. Mission: STS-41-B (Space Shuttle Challenger)
2. Date: February 7, 1984
3. Duration: 5 hours, 55 minutes

*Spacewalk (EVA) Details:*

1. First untethered spacewalk in history
2. McCandless used the Manned Maneuvering Unit (MMU) to move freely in space
3. Distance from Space Shuttle Challenger: up to 320 feet (98 meters)
4. MMU propulsion: 24 thrusters, using nitrogen gas

*Astronaut's Experience:*

1. McCandless described the feeling as "breathtaking" and "exhilarating"
2. He performed various tasks, including testing the MMU and performing maneuvers
3. Communication with the shuttle crew was maintained through radio

*Historic Significance:*

1. Demonstrated the feasibility of untethered spacewalks
2. Paved the way for future spacewalks and space exploration
3. Showcased the capabilities of the Manned Maneuvering Unit

*Interesting Fact:*

1. The iconic photograph of McCandless was taken by fellow astronaut Robert Stewart.

Bruce McCandless' courageous spacewalk marked a significant milestone in space exploration history! https://image.nostr.build/81e8ae957624b6229683e5de00b6fd6b5629013b991cb7ce394f3dc81ae7886a.jpg