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

Two days after lifting off from Florida’s Space Coast, a Dragon cargo capsule packed with more than 6,400 pounds of research experiments and crew supplies arrived at the International Space Station on Wednesday. Astronaut Jack Fischer used the station’s robotic arm to grapple the supply ship at 6:52 a.m. EDT (1052 GMT).

SpaceX launched its first mission of the year Monday at 9:19 p.m. EST (0219 GMT Tuesday), when a Falcon 9 rocket lifted off from Cape Canaveral with SpaceX’s third batch of 60 Starlink broadband satellites.

In a major shakeup at NASA Headquarters, agency Administrator Jim Bridenstine said Wednesday that Bill Gerstenmaier, the widely respected director of human spaceflight, has been replaced in the midst of an ambitious push to meet the Trump administration’s directive to send astronauts back to the moon within five years.