![](https://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://api.time.com/wp-content/uploads/2015/01/buzz-aldrin-85-025.jpg?quality=75&w=2400)
![](https://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://api.time.com/wp-content/uploads/2015/02/3-liftoff-apollo-16-april-1972.jpg?quality=75&w=2400)
![](https://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://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://api.time.com/wp-content/uploads/2015/02/8-the-earth-jully-11-1969.jpg?quality=75&w=2400)
![](https://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://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://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://api.time.com/wp-content/uploads/2015/02/space-nasa-lot-57.jpg?quality=75&w=2400)
![](https://api.time.com/wp-content/uploads/2015/02/space-nasa-lot-6.jpg?quality=75&w=2400)
![](https://api.time.com/wp-content/uploads/2015/02/space-nasa-lot-118.jpg?quality=75&w=2400)
![](https://api.time.com/wp-content/uploads/2015/02/space-nasa-lot-115.jpg?quality=75&w=2400)
![Reproduction, © Bloomsbury Auctions Reproduction, © Bloomsbury Auctions](https://api.time.com/wp-content/uploads/2015/02/space-nasa-lot-143.jpg?quality=75&w=2400)
![](https://api.time.com/wp-content/uploads/2015/02/space-nasa-lot-13.jpg?quality=75&w=2400)
![Reproduction, © Bloomsbury Auctions Reproduction, © Bloomsbury Auctions](https://api.time.com/wp-content/uploads/2015/02/space-nasa-lot-22.jpg?quality=75&w=2400)
![Reproduction, © Bloomsbury Auctions Reproduction, © Bloomsbury Auctions](https://api.time.com/wp-content/uploads/2015/02/space-nasa-lot-76.jpg?quality=75&w=2400)
![Reproduction, © Bloomsbury Auctions Reproduction, © Bloomsbury Auctions](https://api.time.com/wp-content/uploads/2015/02/space-nasa-lot-77.jpg?quality=75&w=2400)
![](https://api.time.com/wp-content/uploads/2015/02/space-nasa-lot-122.jpg?quality=75&w=2400)
![Reproduction, © Bloomsbury Auctions Reproduction, © Bloomsbury Auctions](https://api.time.com/wp-content/uploads/2015/02/space-nasa-lot-169.jpg?quality=75&w=2400)
More Must-Reads from TIME
- Inside Elon Musk’s War on Washington
- Why Do More Young Adults Have Cancer?
- Colman Domingo Leads With Radical Love
- 11 New Books to Read in February
- How to Get Better at Doing Things Alone
- Cecily Strong on Goober the Clown
- Column: The Rise of America’s Broligarchy
- Introducing the 2025 Closers
Contact us at letters@time.com