The National Reconnaissance Office is a U.S. Government agency which has been given the charge to design, build and launch and maintain America's fleet of spy satellites. As a classified mission, information about the satellite and its orbit is limited.
Spy satellite NROL-47 was due to be launched on Wednesday, January 10 - but was delayed due to dramatic weather conditions.
Manchester based company Starchaser has successfully launched a research rocket and now aims to rocket tourists into space by 2022.
Because of the secretive nature of the mission, not much is known about the NROL-47 payload.
The office is in charge of designing, building, launching and maintaining USA intelligence satellites. It is part of a mission for the National Reconnaissance Office.
Russian Federation says militants used drones to attack its bases in Syria -agencies
Syrian air defences intercepted one rocket, but several more hit "near a military position, causing material damage", it added. The rebel groups responded to the Russian escalation with attacks on Russian targets in Syria , including Khmeimim air base .
This satellite was launched aboard a Delta IV Medium (5,2) configuration Evolved Expendable Launch Vehicle. The main engine of the Delta IV is the RS-68A, manufactured by Aerojet Rocketdyne.
The launch provider United Launch Alliance (ULA) subsequently delayed it by 24 hours.
There's an 80 percent chance of favorable weather for the Friday afternoon launch, United Launch Alliance said on Twitter. But this time, it has used the two-stage, 217-foot-tall (66 m) Delta IV rocket.
Col. Greg Wood, 30th Space Wing vice commander, was the launch commander. "We are proud to provide this national defense capability, and every Team V member involved has tirelessly worked to ensure the launch is safe and successful". At present, that mission is scheduled to get underway on Thursday, Jan. 18 from Cape Canaveral Air Force Station's Space Launch Complex 41 located in Floridae launch is scheduled for Jan. 18 from Space Launch Complex-41 at Cape Canaveral Air Force Station, Fla.