Watch a replay of the launch of a Japanese navigation satellite

Elon Musk, SpaceX’s founder and CEO, did his best to set low expectations heading into the first test flight of the gargantuan Super Heavy booster and Starship rocket this week. “Just don’t blow up the launch pad,” Musk said.

A 139-foot-tall Antares rocket is slated for a predawn launch Monday from the Mid-Atlantic Regional Spaceport on Virginia’s Eastern Shore, carrying a Cygnus supply ship heading for the International Space Station.

China added two more satellites to the country’s Beidou navigation fleet — an analog to the U.S. military’s GPS network — with a successful Long March 3B rocket launch Sunday.