Live coverage
Stream links and embedded coverage.
Launch Detail
Loading launch detail
Pulling launch timing, vehicle context, weather signals, and mission evidence.
Launch detail
United Launch Alliance • Delta IV Heavy • Space Launch Complex 37B (FL)

United Launch Alliance • Delta IV Heavy • SLC-37B
Classified payload for NRO.

Enhanced forecast insights (select launches).
Premium adds the higher-signal weather shell for select Eastern Range launches, including the extra launch criteria and fast-read risk rows.
Stream links and embedded coverage.
Open the launch pad in Google Maps satellite mode using the pad coordinates.
Classified payload for NRO.
The Delta IV Heavy (Delta 9250H) is an expendable heavy-lift launch vehicle, the largest type of the Delta IV family, and is the world's second highest-capacity rocket in operation. It is manufactured by United Launch Alliance and was first launched in 2004.
United Launch Alliance (ULA) is a joint venture of Lockheed Martin Space Systems and Boeing Defense, Space & Security. ULA was formed in December 2006 by combining the teams at these companies which provide spacecraft launch services to the government of the United States. ULA launches from both coasts of the US. They launch their Atlas V vehicle from LC-41 in Cape Canaveral and LC-3E at Vandeberg. Their Delta IV launches from LC-37 at Cape Canaveral and LC-6 at Vandenberg.
Premium keeps the launch-by-launch change log visible so you can review slips, window edits, and status changes without waiting for an error-driven upgrade prompt.
fe7bff45bfcb007d930d31b39a9506ac817af5d5c3a1fd13f9cdf911142638daLinked via Spaceflight News API (SNAPI).
ArticleRunning more than three months late, a United Launch Alliance Delta 4-Heavy rocket took off Thursday and carried a U.S. government spy satellite into an orbi...
ArticleUnited Launch Alliance’s Delta IV Heavy rocket successfully launched a classified National Reconnaissance Office (NRO) payload, codenamed NROL-44 at 20:09 ES...
ArticleA United Launch Alliance Delta 4 Heavy rocket on Dec. 10 at 8:09 p.m. Eastern launched NROL-44 from Cape Canaveral Space Force Station in Florida.
ArticleUnited Launch Alliance is set to try again to launch a Delta 4-Heavy rocket and a classified U.S. government spy satellite Thursday after delays of more than...
Article
ArticleProvider, rocket, pad, and booster history tied to this launch.