It’s back — and it’s huge. United Launch Alliance’s Vulcan rocket is set to roar off the pad today, Sunday, Nov. 15, at 12:11 p.m. ET, carrying 40 Amazon Leo satellites into low-Earth orbit on a mission that marks the giant rocket’s return to flight.

The stakes couldn’t be higher. Vulcan has been grounded since a Feb. 12, 2026 booster anomaly, and the last two days brought fresh frustration — scrubs on Friday, Nov. 13, and Saturday, Nov. 14. Today, the 29-minute launch window opens from Space Launch Complex 41 at Cape Canaveral Space Force Station in Florida, and the countdown is finally on.

This is Vulcan at full power: six solid rocket boosters and nearly 4 million pounds of thrust, flying a northeast trajectory that could put on a show for skywatchers up the East Coast. The flight is also a major moment for Amazon’s Leo constellation — the tech giant’s big push to beam broadband from space.

How to watch: ULA’s launch webcast begins about 90 minutes before liftoff, so tune in early to catch the final countdown and the climb to orbit. Read the full launch details at Florida Today.