Bill Nelson: “The U.S. and the President's made this clear. It does not want Iran to develop a nuclear weapon. That's a redline for…”

When we find those, by the way, not only looking for life, we start to understand their development, and we better understand who we are, why we are here, how we got here, and all of this evolution of the cosmos.

NASA has proven we are serious as a defender of the planet.

Our decision is that it is more profitable for us to go to the South Pole of the Moon, because we think that is where the water is.

It is critical that NASA remain focused on its core mission.