(Launch webcast begins at 4:30 p.m. EDT)
Live coverage of the United Launch Alliance Atlas 5 rocket flight with NASA’s OSIRIS-REx asteroid sample return probe. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.
Two SpaceX rockets are standing on launch pads several miles apart on Florida’s Space Coast awaiting launch opportunities Thursday and Friday, once an oft-delayed Delta 4-Heavy rocket from rival United Launch Alliance is able to blast off from Cape Canaveral with a top secret U.S. government spy satellite.
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