Live coverage of Delta 4 countdown and launch

The United Launch Alliance Atlas 5 rocket, standing 197 feet tall and and weighing 1.2 million pounds, unleashes 2.4 million pounds of thrust from its main engine and four solid-fuel boosters at 6:42 p.m. EST (2342 GMT) Saturday to launch the GOES-R weather observer for NASA and NOAA from Cape Canaveral, Florida.

A SpaceX Falcon 9 rocket launched at 4:25 p.m. EST (2125 GMT) Wednesday from Cape Canaveral with the GovSat 1 communications satellite, a military-grade craft to relay signals for Luxembourg and allied nations. SpaceX’s launch team scrubbed an attempt Tuesday to replace a transducer on the company’s Falcon 9 rocket and wait for improved weather conditions.

SpaceX launched of a Falcon 9 rocket at 6:01 a.m. EDT (1001 GMT) Sunday with the company’s next 60 Starlink internet satellites. The Falcon 9’s reusable first stage, making its ninth flight to space, successfully landed on a drone ship positioned offshore in the Atlantic Ocean.