An Orbital ATK Pegasus XL rocket carrying eight hurricane research satellites for NASA fired into orbit Thursday at 8:37 a.m. EST (1337 GMT) off the east coast of Florida.

An 11-hour practice countdown was completed Friday at Cape Canaveral’s launch complex 41 for the planned launch of an Atlas 5 rocket and Boeing’s Starliner capsule later this month. The rocket was loaded with super-cold liquid oxygen and liquid hydrogen in a full dress rehearsal for launch day.

An International Launch Services Proton rocket launched at 7:16 p.m. EST Sunday (0016 GMT Monday) with the Yamal 401 communications satellite for Gazprom Space Systems. The rocket’s Breeze M upper stage will deploy the spacecraft into geostationary orbit about nine hours after liftoff.