Watch a Delta IV rocket launch a secret satellite to space

Vandenberg Launch set for January 10 at 1PM

Vandenberg Launch set for January 10 at 1PM

United Launch Alliance, which provided the rocket, reported that another attempt to launch will be made beginning at 1 p.m. Friday.

The United Launch Alliance Delta IV rocket with a National Reconnaissance Office payload was originally set to launch Wednesday but was then rescheduled for Thursday, when it was delayed multiple times and ultimately scrubbed due to a ground system valve problem.

Earlier, the launch was postponed at least two times - due to strong winds on Wednesday and due to a technical error earlier on Thursday. The mission is ULA's 27th for the U.S. National Reconnaissance Office.

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The launch of a Delta IV rocket carrying the classified satellite was targeted for 2:05 p.m. PST from complex 6 at Vandenberg Air Force Base northwest of Los Angeles.

"We're counting down", ULA tweeted on Thursday morning. The launch will be streamed live, with coverage beginning at 3:30 p.m. ET. The weather forecast shows a 90-percent chance of favorable conditions for a Friday launch, according to ULA. The government hasn't confirmed whether the top-secret satellite did indeed fall out of orbit and reenter Earth's atmosphere. Details such as hazard warnings issued to pilots and ships can reveal the satellite's likely orbital entry point.

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