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CIBER (for Cosmic Infrared Background Experiment, aka CIBER-1) is a near-infrared intensity mapping program carried out with sounding rockets, to characterize the near-infrared extragalactic background light (EBL), part of the cosmic infrared background (CIB). A spectrograph recorded the Lyman cutoff within the 10 < z < 20 range, and second spectrograph recorded zodiacal light (in the form of Fraunhofer lines) so the EBL could be distinguished. Four flights took place between 2009 and 2014. CIBER-2 is an improved version that flew in 2021. A 2023 second CIBER-2 launch was unsuccessful in collecting data, and a third launch is scheduled for May 2024.