Watch Rocket Lab launch Symphony of the Stars mission overnight tonight after delay

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Rocket Lab will launch a mysterious satellite early Saturday morning (June 28), and you can watch the action live online.

An Electron rocket topped with a single spacecraft is scheduled to lift off from Rocket Lab's New Zealand site on Saturday at 2:45 a.m. EDT (0645 GMT); 6:45 p.m. local New Zealand time).

Rocket Lab will livestream the event from their mission page website, starting 30 minutes before launch.

The mission, which Rocket Lab calls "Symphony in the Stars," will send a satellite to a circular orbit 650 kilometers (404 miles) above Earth, if all goes according to plan.

"Symphony in the Stars" is the first of two missions for "a confidential commercial customer," Rocket Lab wrote in a mission description. The second of those flights is expected to launch this year as well.

And that's pretty much all of the information the company has revealed about Friday's mission; for example, we don't know what the satellite will do once it reaches orbit.

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"Symphony in the Stars" will be the ninth mission of 2025 and 67th liftoff overall for Electron, a 59-foot-tall (18-meter-tall) rocket that gives small satellites dedicated rides to orbit.

Rocket Lab is also developing a larger, partially reusable rocket called Neutron, which is expected to debut sometime this year.

Editor's note: This article was updated Friday, June 27 to reflect the mission's new launch date, after a previous launch scrub June 20.