SpaceX did not give a reason for the early Friday scrub. Weather had been forecasted to be 95% favorable, and was not an issue at the time of launch. Start the day smarter. Get all the news you need in your inbox each morning.

A crew of four international spacefarers on a private mission will soon seek to become the first humans to travel over Earth's poles.

SpaceX pushed back plans early Friday morning to launch its Falcon 9 rocket. The company scrubbed its 1:24 a.m. scheduled liftoff and announced it would instead attempt the launch Friday night. The rocket will have 21 new Starlink satellites in tow,