NASA astronauts Joe Acaba (left) and Mark Vande Hei (right) sit inside Lunar Outpost’s Pegasus lunar terrain vehicle prototype during human-in-the-loop testing at NASA’s Johnson Space Center where they evaluated the design, usability, and crew comfort of Lunar Outpost’s lunar rover. NASA selected Lunar Outpost and Astrolab in May 2026 to build and deliver the first phase of lunar terrain vehicles for Moon Base development. Image Credit: NASA/Bill Stafford