Video: 4K video replay of SpaceX’s CRS-21 launch (members only)

A sharp-eyed Chinese Earth-imaging satellite rode a Long March 4B booster into orbit Tuesday, tying the record for the highest number of space launches China has achieved in a single year.

A Northrop Grumman Antares rocket powered off its launch pad at Wallops Island, Virginia, on Feb. 20 with a Cygnus supply ship heading for the International Space Station.

The Falcon 9 booster for SpaceX’s next mission fired up briefly on a Cape Canaveral launch pad Sunday in a routine pre-flight test before a scheduled launch Friday night to kick off the final flight of the first version of the company’s Dragon cargo capsule to the International Space Station.