Five Apollo 11 technologies that NASA still uses 50 years after the first man landed on the moon

The $4 — the one that put the first man on the moon in 1969 — celebrates its 50th anniversary today. It took a total of 400,000 people from the National Aeronautics and Space Administration (NASA) to turn the dream into a reality and there are some things that haven’t changed.

The technology and inventions that NASA developed along the way are still at play today. Most of them are outdated, but a few have managed to stand the test of time.

Here’s a quick quick at the $4 that are still in use 50 years after the $4: