Astronaut’s Undisclosed Minor Medical Issue Delays Spacewalk

Astronaut and Expedition 65 Flight Engineer Mark Vande Hei inspects a spacesuit in preparation for a spacewalk at the International Space Station on Aug. 17, 2021. NASA via AP

CAPE CANAVERAL, Fla.—NASA is delaying a spacewalk at the International Space Station this week because of an undisclosed medical issue involving one of its astronauts.

Officials announced the postponement Monday, less than 24 hours before Mark Vande Hei was supposed to float outside.