Jim Bridenstine: “We have heard testimony before this Committee that your agency's proposed ozone NAAQS rule will be the most expensive…”

When we use different types of rockets, we have dissimilar redundancy.

The only rocket that is going to be available to take humans by 2024 is the SLS rocket with the Orion crew capsule.

Having a Gateway in orbit around the Moon is important for a lot of reasons.

Here's what we know: China is not going to slow down. That means that we, as a country, need to come together, figure out what the architecture is, be committed to a process and then move forward as rapidly as possible.