Watch conditions at Kennedy Space Center during Tropical Storm Isaias

SpaceX ignited the engines of its Falcon Heavy at 12:30 p.m. EST (1730 GMT) on Jan. 24 as it prepares for the maiden flight of the three-core rocket.

SpaceX launched 60 more spacecraft Wednesday to join the Starlink fleet beaming broadband signals around the world, while the company’s engineers move closer to debuting a sunshade that could reduce the satellites’ impacts on ground-based astronomy.

SpaceX rolled out a Falcon 9 rocket Sunday night to pad 39A at NASA’s Kennedy Space Center in Florida for liftoff with the next 60 Starlink internet satellites, but officials have pushed back the launch until Wednesday.