Ivanoff Research Station

The Ivanoff Research Station is a human-controlled monitoring station which orbits Installation 03.

Little is known about this research station, it appears to be kept top-secret. Even ONI's top scientist didn't know about it, or ONI's intentions to research Forerunner Installations.

In March 2553, Margaret Parangosky, director of ONI, interrogated Dr. Catherine Halsey in a cell on this station about the Spartan-II project and informed her that all of humanity believes her to be dead, also noting that she could be working for Parangosky.

In 2557, The Didact along with a contingent of Covenant Remnant arrived at the station from the Forerunner Shield World of Requiem, in order to remove The Composer from the station and use it against Humanity. SPARTAN-II John-117 boarded a Storm Covenant Lich (which was part of a greater Covenant fleet accompanying the Didact's ship) prior to slipspace travel from Requiem to Installation 03, after which he managed to enter Ivanoff station to attempt to hold off the Didact long enough to destroy the Composer. However, the Master Chief failed to do so before the Didact was able to remove the Composer from the station using a tractor beam, thereafter composing everyone aboard the station in order to create more Promethean Knights (Save for John-117, who was made immune to its effects by The Librarian earlier on Requiem). John-117 and Cortana managed to obtain a Broadsword from the station's hangar bay and load it with a HAVOK Tactical Nuclear Weapon to pursue the Didact and destroy The Composer before he reached Earth. The status of ivanoff station is still unknown