"In fact," the NASA administrator said, "we want lots of humans in space."
Bridenstine, who became the space agency's chief in April, recently sat down with Space.com and other reporters during a visit to the Johnson Space Center in Houston, during which he shared what he saw as his priority for NASA going forward. [These 9 Astronauts Will Fly the 1st Flights on SpaceX and Boeing Spaceships]
"When you look back at history, look back at the end of the Apollo program, 1972 when we didn't go back to the moon... you look back and there was a period of time there after Apollo and before the space shuttles when we had a gap of human spaceflight capability," Bridenstine said. "And then you go forward and look at the retirement of the space shuttles in 2011, and now we're getting to the point where we're ready to fly commercial crew. We've got a gap of about eight years in our ability to fly crew into space.
"When we think about the [end of the] International Space Station, we want to make sure that a gap doesn't materialize," he said. "I believe it is important to do everything in our power to prevent another gap from occurring and that is why it is important to start this conversation now."