Bill Nelson: “Let me define the problem and give you the background.”

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

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.

Understand that this isn't all like we are pouring money down a rathole. Look what it is doing for our country.

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.