SpaceX Crew Dragon launch to space station delayed by "minor medical issue"

The planned launch of a SpaceX Crew Dragon capsule Wednesday carrying four astronauts to the International Space Station has been delayed to at least Saturday because of a "minor medical issue" with one of the crew members, NASA announced Monday.

The agency said the delay is not related to COVID-19 and it is not a medical emergency, but no other details were provided. It's not known which of the "Crew-3" astronauts — commander Raja Chari, pilot Thomas Marshburn, Kayla Barron and European Space Agency astronaut Matthias Maurer — might be affected.

The astronauts already were in quarantine, normal procedure for astronauts in the two weeks leading up to launch, and there were no indications of an issue before NASA's announcement in a blog post.