Elon Musk's company scrubbed the launch of 60 Starlink spacecraft on Thursday about two hours before their planned 10:30 p.m. EDT (02:30 GMT on May 17) liftoff, citing a desire to update software and perform some more checks, space.com reported.
"Standing down to update satellite software and triple-check everything again. Always want to do everything we can on the ground to maximize mission success, next launch opportunity in about a week," SpaceX representatives said via Twitter.
Tonight's scrub was the second in as many days. SpaceX also called off an attempt because of strong high-altitude winds.
Starlink is designed to provide affordable Internet access to people around the world. The first five dozen spacecraft won't be nearly enough to do this; SpaceX will need about 400 satellites to provide minimal coverage and about 800 for moderate coverage, Musk said.
The mega constellation is a key part of SpaceX's Mars-colonization plans. Revenue generated by the network will help the company develop and fly its next-generation Super Heavy rocket and 100-passenger Starship spaceship, Musk said.
Other Internet-satellite mega constellations are on the horizon as well. For example, both OneWeb and Amazon plan to launch hundreds of satellites of their own in the near future.
SpaceX has launched Starlink satellites before. In February 2018, the company lofted two prototypes on a test mission that seems to have gone well. The next 60 are operational spacecraft that will be part of the constellation.