Time-lapse: The Falcon 9 and Crew Dragon roll to the launch pad (members only)

A slide wire escape system has been undergoing tests at launch pad 39A at the Kennedy Space Center in readiness for the first SpaceX Crew Dragon flight to carry astronauts to the International Space Station.

SpaceX continued launching satellites for the Starlink internet network Friday, sending a Falcon 9 rocket aloft from Cape Canaveral with 56 more older-generation broadband spacecraft as ground teams troubleshoot problems with a batch of upgraded Starlinks launched last month.

The last two spacecraft in a four-satellite constellation of tropical cyclone research platforms took off late Thursday from New Zealand on a Rocket Lab Electron launcher, helping ensure NASA’s TROPICS mission is ready for observations in time for the peak of this year’s Atlantic hurricane season.