Watch a live view of SpaceX’s Cape Canaveral launch pad (members only)

Rocket Lab’s fifth flight of the year is set for liftoff as soon as Wednesday (U.S. time) carrying a small experimental satellite to orbit for Astro Digital, a Silicon Valley company aiming to demonstrate technologies in space after an earlier focus on Earth observation.

An Atlas 5 rocket rumbled into space Saturday evening after lifting off from Cape Canaveral with multiple U.S. Air Force communications and tech demo satellites, and brilliant clear skies made for ideal viewing conditions shortly before sunset.

SpaceX scrubbed a Falcon 9 launch attempt Thursday to evaluate a “slightly high” pressure reading in the rocket’s upper stage liquid oxygen tank, and officials have rescheduled the company’s final mission of the year for Saturday morning.