Neil Armstrong was probably one of the most human guys I've ever known in my life.

I hold the world speed record downhill, in a Rover. I think it was 17 kilometers per hour, downhill.

OK, let's get this mother out of here.

Some astronauts describe the routine flushing of urine into space, where the freezing temperatures turn the droplets into a cloud of bright, drifting crystals, as being among the most amazing sights they saw on an entire voyage.

We went into darkness after being in daylight the whole time on the way to the Moon. And then we went into darkness. And we're in the shadow... of the Moon.

Curiosity is the essence of human existence. 'Who are we? Where are we? Where do we come from? Where are we going?' I don't know. I don't have any answers to those questions. I don't know what's over there around the corner. But I want to find out.

The mass gross absence of sound in space is more than just silence.