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

A Russian Soyuz spacecraft carrying two cosmonauts and a NASA shuttle veteran blasted off from the Baikonur Cosmodrome in Kazakhstan Wednesday and set off after the International Space Station.

SpaceX’s Falcon 9 rocket will go from Cape Canaveral to low Earth orbit in 10 minutes Friday with a Dragon capsule heading for the International Space Station carrying more than 4,800 pounds of supplies and experiments.

After a one-day delay to wait for improved conditions in the offshore abort zone, SpaceX and NASA launched four astronauts at 5:49 a.m. EDT (0949 GMT) Friday aboard a Falcon 9 rocket and Crew Dragon spaceship from Kennedy Space Center in Florida. The astronauts docked with the International Space Station at 5:08 a.m. EDT (0908 GMT) Saturday for a planned six-month mission.