We think of Project Vanguard as America's first failed satellite launch attempt, but the program was much more than one public explosion.
From hand-held rocket guns to jet-powered backpacks, NASA has tried a variety of ways to give astronauts increased maneuverability in space.
To preserve the site where aviation was born at Kitty Hawk in North Carolina, the landscape had to change entirely.
Before Apollo 13 launched, NASA had already worked out what to do if a plutonium-powered spacecraft system was forced to return to Earth.
A history of how the Omega Speedmaster, the famous "Moon watch," earned its spot on Apollo missions.
Lifting bodies, also known as aircraft that look like potatoes with fins, were once all the rage.
Spy satellites are almost as old as the space age itself, and the first reconnaissance programs set the precedent for decades to come.
Before the International Space Station, Mir, and Skylab, there was Salyut, humanity's first space station.
It's been 42 years since Apollo astronauts first drove the lunar rover, and the tracks are still there today.
In 1959, humanity got its first look at the unseen far side of the Moon thanks to the Luna 3 probe.