Live coverage: Atlas 5 rocket lifts off from Cape Canaveral

The U.S. Air Force’s fourth Advanced Extremely High Frequency spacecraft launched Wednesday from Cape Canaveral on top of a United Launch Alliance Atlas 5 rocket, expanding the reach of the military’s most secure, jam-resistant satellite communications network.

A Falcon 9 rocket fires its nine Merlin first stage engines at Cape Canaveral’s launch pad 40 Nov. 5, 2019, as part of a routine pre-launch test. The successful static fire clears the way for the launch of 60 Starlink satellites, currently scheduled for Nov. 11.

The satellite awaiting launch early Saturday from California aboard the final flight of the venerable Delta 2 rocket should allow scientists to more precisely track changes in our planet’s ice sheets, using six green laser beams to chart the height and slope of polar ice and glaciers, providing a key input into climate change research.