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

The flight was delayed another day as Tropical Storm Bertha was expected to make landfall in Texas on Thursday. Liftoff of the Starship Flight 13 mission is scheduled during a 90-minute window that opens on Friday, July 24, at 5:45 p.m. CDT (6:45 p.m. EDT / 2245 UTC).

A Russian Progress supply ship launched Tuesday from the Baikonur Cosmodrome in Kazakhstan, firing into orbit from a snow-covered pad to haul three tons of fuel, water and equipment to the International Space Station.

A German-built satellite designed to relay data between other orbiting spacecraft and ground stations using laser beams is set for launch in tandem with an Intelsat communications craft Tuesday from Kourou, French Guiana, aboard an Ariane 5 rocket.