![](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/4-james-mcdivitt-first-us-spacewalk-ed-white_s-eva-over-new-mexico-gemini-4-3-june-1965.jpg?quality=85&w=2400)
By TIME Photo
![Gemini 12 astronaut Buzz Aldrin snaps a picture of himself during a spacewalk in November 1966. Credit: NASA](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/01/buzz-aldrin-85-025.jpg?quality=75&w=2400)
![](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/2-eugene-cernan-harrison-schmitt-with-the-earth-above-the-us-flag-eva-1-apollo-17-december-1972.jpg?quality=75&w=2400)
![](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/3-liftoff-apollo-16-april-1972.jpg?quality=75&w=2400)
![](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/4-james-mcdivitt-first-us-spacewalk-ed-white_s-eva-over-new-mexico-gemini-4-3-june-1965.jpg?quality=75&w=2400)
![](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/5-edgar-mitchell-alan-shepard-and-the-american-flag-apollo-14-february-1971.jpg?quality=75&w=2400)
![](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/8-the-earth-jully-11-1969.jpg?quality=75&w=2400)
![](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/9-walter-cunningham-florida-peninsula-looking-east-apollo-7-october-1968.jpg?quality=75&w=2400)
![](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/14-pete-conrad-alan-bean-with-the-reflection-of-the-photographer-in-his-visor-eva-2-apollo-12-november-1969.jpg?quality=75&w=2400)
![](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/15-walter-schirra-on-board-portrait-of-astronaut-walter-cunningham-apollo-7-october-1968.jpg?quality=75&w=2400)
![](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/space-nasa-lot-57.jpg?quality=75&w=2400)
![](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/space-nasa-lot-6.jpg?quality=75&w=2400)
![](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/space-nasa-lot-118.jpg?quality=75&w=2400)
![](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/space-nasa-lot-115.jpg?quality=75&w=2400)
![Reproduction, © Bloomsbury Auctions Reproduction, © Bloomsbury Auctions](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/space-nasa-lot-143.jpg?quality=75&w=2400)
![](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/space-nasa-lot-13.jpg?quality=75&w=2400)
![Reproduction, © Bloomsbury Auctions Reproduction, © Bloomsbury Auctions](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/space-nasa-lot-22.jpg?quality=75&w=2400)
![Reproduction, © Bloomsbury Auctions Reproduction, © Bloomsbury Auctions](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/space-nasa-lot-76.jpg?quality=75&w=2400)
![Reproduction, © Bloomsbury Auctions Reproduction, © Bloomsbury Auctions](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/space-nasa-lot-77.jpg?quality=75&w=2400)
![](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/space-nasa-lot-122.jpg?quality=75&w=2400)
![Reproduction, © Bloomsbury Auctions Reproduction, © Bloomsbury Auctions](https://cdn.statically.io/img/api.time.com/wp-content/uploads/2015/02/space-nasa-lot-169.jpg?quality=75&w=2400)
More Must-Reads from TIME
- Eyewitness Accounts From the Trump Rally Shooting
- From 2022: How the Threat of Political Violence Is Transforming America
- ‘We’re Living in a Nightmare:’ Inside the Health Crisis of a Texas Bitcoin Town
- Why We All Have a Stake in Twisters’ Success
- 8 Eating Habits That Actually Improve Your Sleep
- Stop Feeling Bad About Sweating
- Welcome to the Noah Lyles Olympics
- Get Our Paris Olympics Newsletter in Your Inbox
Contact us at letters@time.com