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

The next launch of a SpaceX Falcon Heavy rocket has been delayed from July to October to await the readiness of its U.S. military payload, and the following Falcon Heavy flight has been rescheduled from late this year to some time in 2022, military officials said.

SpaceX test-fired a Falcon 9 rocket Saturday at Cape Canaveral, a critical test before liftoff Wednesday with several tons of cargo heading to the International Space Station.

New satellites for SpaceX’s Starlink broadband network set for launch Monday from Cape Canaveral will debut several performance and safety upgrades, but they do not include changes to reduce the brightness of the satellites, a modification SpaceX says it will introduce on future Starlink craft to mitigate their impacts on ground-based astronomy.