Donald Trump: “My father was a Brooklyn builder, Brooklyn, Queens, and a great father.”

Within the next two years, NASA will launch the first-ever nuclear-powered spacecraft to Mars.

Stephen's been with me from the beginning. He gets it, very good politically ... and he's a very good manager. He'll do a great job.

We're going to be paving the way for astronauts to plant the Stars and Stripes on the red planet.

Our calling is to explore. Our purpose is to build, and our aim is always to win.