Live coverage: Launch of Delta 4-Heavy aborted seconds before liftoff

The second orbital launch attempt by Chinese launch company iSpace failed shortly after liftoff Feb. 1, following a successful debut flight in 2019 that made iSpace the first private firm in China to put a payload into orbit.

SpaceX’s first Falcon Heavy rocket is set for liftoff Tuesday from NASA’s Kennedy Space Center in Florida, and the heavy-lift launcher will head on an easterly course over the Atlantic Ocean atop nearly 5 million pounds of thrust.

SpaceX and its visionary founder Elon Musk win the lion’s share of public attention in the commercial rocket arena, with dramatic, increasingly routine booster landings and spectacular stunts like the launch of Musk’s Tesla Roadster on the maiden flight of the company’s new Falcon Heavy rocket last month.