Science
Delta 4-Heavy launch aborted at T-minus 7 seconds – Spaceflight Now – Spaceflight Now
Another countdown for United Launch Alliance’s next Delta 4-Heavy rocket mission ended without a liftoff Wednesday after a computer sequencer detected a potential problem just before engine ignition.
The rocket was set to blast off from Cape Canaveral with a U.S. government spy satellite at 11:54 p.m. EDT Wednesday (0354 GMT Thursday), but the countdown stopped at T-minus 7 seconds. ULA said the automated countdown sequencer controlling the rocket in the final moments before liftoff detected an…
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