CAPE CANAVERAL, Fla. (AP) — The $10 billion successor to the Hubble Space Telescope is about to take flight. NASA is entrusting the launch of the world’s biggest and most powerful space observatory to its European partners.

After a delay due to weather, a French-built rocket is poised to blast off Christmas morning at 6:20 a.m. CT from South America with the James Webb Space Telescope.

Years behind schedule, the elaborate, budget-busting telescope had to be folded origami-style to fit in the rocket. That’s because its sunshield is the size of a tennis court.

Webb is designed to peer almost all the way back in time, beholding the first stars.