An Indian LVM3 rocket launched AST SpaceMobile’s next-generation direct-to-device BlueBird satellite Dec. 23, kicking off a rollout of dozens of spacecraft built around the largest commercial communications antenna ever deployed in LEO.

Isro will launch the Bluebird Block-2 communication satellite aboard its heavy-lift LVM3-M6 rocket from Sriharikota at 8.54 am on December 24.

The 6,100-kg communications satellite is scheduled to lift off at 8.54 am and will be injected into a low Earth orbit (LEO) of about 520 km roughly 15 minutes after launch.