The “Commercial Crew Cadre,” from left: Doug Hurley, Eric Boe, Bob Behnken, and Suni Williams.
More than 50 people are in NASA’s astronaut corps, though 12 in the agency’s 2017 astronaut class are still training.
NASA previously told Business Insider that anyone currently assigned to a space mission wouldn’t be picked for the Boeing and SpaceX flights. That left 33 “active” and eligible astronauts.
Four shoe-in picks were part of a “Commercial Crew Cadre” (pictured above): a group of astronauts who’ve worked with SpaceX and Boeing for three years to develop the new vehicles.