Q&A with Keith Gendreau, principal investigator of the first X-ray space communications experiment (members only)

The next quartet bound for the International Space Station will wait a bit longer before they can punch their ticket to space after Falcon Heavy delays pushed back the launch of the next Crew Dragon mission, NASA said Tuesday.

A work stoppage at the Ariane 5 rocket’s launch base in South America prevented rollout of the booster to the launch pad Monday, pushing back the liftoff of two communications satellites for Brazil and South Korea until at least Wednesday.

Japan’s seventh HTV resupply mission to the International Space Station blasted off from Tanegashima Island on Saturday aboard an H-2B rocket. The unpiloted cargo carrier launched at 1752 GMT (1:52 p.m. EDT), kicking off a nearly five-day pursuit of the space station.