NASA’s SpaceX Crew-4 astronauts (L-- R) :Jessica Watkins, Bob Hines, and Kjell Lindgren, and ESA astronaut Samantha Cristoforett (Credit: NASA Kennedy/ CC-By-SA-2.0/Flickr)

All space missions are significant. However, SpaceX's Crew-4 mission, which docked at the International Space Station (ISS) on April 28, 2022, was particularly historic. The approximately 16-hour flight was SpaceX's fastest Dragon astronaut trip to the space lab yet. More importantly, the crew of four included Jessica Watkins — the first African American woman assigned to the ISS on a long-term mission.