What is Delta IV?
[[File:Delta IV Medium+ (4,2) lifts off with GOES-N.jpg|thumb|The Delta IV Medium+ (4,2) with the GOES-N satellite, lifts off from Cape Canaveral Air Force Station in Florida.]] The '''Delta IV''' was a [[rocket]] made to launch [[satellite (artificial)|satellites]]. It had many different types including Medium, Medium+, and Heavy for many different types of satellites [[orbit|orbiting]] at many different [[altitude|altitudes]] above the [[Earth]]. The Delta IV had launches at [[Cape Canaveral Air Force Station]] in [[Florida]] and at [[Vandenberg Air Force Base]] in [[California]].<ref>{{cite web |url=http://www.ulalaunch.com/products_deltaiv.aspx |title=Delta IV - United Launch Alliance |website=United Launch Alliance |quote=With operational launch pads on both coasts—Space Launch Complex-37 at Cape Canaveral Air Force Station, Fla., and Space Launch Complex-6 at Vandenberg Air Force Base, Calif.—every Delta IV configuration is available to service the requirements of current and future satellite programs.|access-date=26 May 2016}}</ref> It was no longer used after it's 45th mission. == Launches == The Delta IV was launched 32 times. The first flight was on [[November 20]], [[2002]], and it launched the ''Eutelsat W5'' [[communications satellite]] into [[geostationary transfer orbit]] (GTO). == Types == The Delta IV rocket came in many different types meant to launch different sizes and kinds of satellites. [[File:Delta IV family.png|left|thumb|The different kinds of Delta IV rockets.]] === Delta IV Medium === The least powerful kind of the Delta IV rocket was the Medium type. It has 1 main Common Booster Core (CBC) as the first stage of the rocket, using the [[RS-68]] engine, and the second stage is like from the [[Delta III]] rocket, but it has been changed. It uses a 4-[[Metre|meter]] [[payload fairing]] to cover the satellite during the launch of the rocket. This kind was launched 3 times. [[File:Delta IV Heavy 352 with NROL-49.jpg|thumb|The Delta IV Heavy with NROL-49, a top secret spy satellite, lifti