Bill Nelson: “It would be a very powerful statement to Iran if Russia joined with us or with NATO in a missile defense program.”

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

That's like eating our seed corn. We're not going to have anything to plant next year in the quest of trying to understand what is part of the statutes for NASA, which is to search for life, and therefore to understand who we are, what we…

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.

All of us have a responsibility to protect our home planet. After all, it's the only one we have.