It defied the odds to discover thousands of planets.
The news isn't great, but it's not a showstopper either.
From the Popular Science archives.
Just months after Sputnik's launch, the USAF had a manned lunar landing program all figured out.
A sky full of super-Earths
Three of them may be habitable
The September 1 explosion has raised concerns
The closest potentially habitable planet has an intriguing interior
The solar system's smallest planet finds a place in the sun
A look back at the spacecraft's greatest discoveries
The ups and downs of our solar system's least explored planet
And still has a hot core
Throwing shade on Earth's telescopes
So hot right now.
A new book showcases images from the forgotten Gemini mission, which taught NASA how to live and work in space
Before women started flying in space, NASA was a little worried they might die having their periods
The Rogallo wing was NASA's multi-million dollar 1960s attempt to stop ending its missions with splashdowns. It didn't work.
There's a good reason why all of today's manned spacecraft look pretty much the same
The greatest hits of Earth's unmanned spacecraft