However, the increasing privatization of space access raises questions about America's future role in space exploration. While another private company, SpaceX, currently provides the only means for launching astronauts from U.S. soil, Oluseyi emphasized the importance of maintaining both public and private investment in space.

Their capsule undocked from the orbiting lab Monday and is scheduled for splashdown at 5:31 a.m. Tuesday. Watch live here.

It was Axiom's fourth mission to the space station, part of NASA's effort to open up space to more businesses and people.