Ultraviolet emission from the first generation of stars in the Universe ionized the intergalactic medium in a process which was completed by z~6; these photons have been redshifted into the near infrared today and can be measured using instruments situated above the Earth\/s atmosphere. First flying in February 2009, the Cosmic Infrared Background ExpeRiment (CIBER) comprises four instruments housed in a single reusable rocket-borne payload. CIBER will measure spatial anisotropies in the extragalactic IR background caused by cosmological structure from the epoch of reionization using two broadband imaging instruments, make a detailed characterization of the spectral shape of the IR background, and measure the absolute brightness of the Zodical light foreground in each of our six science fields. KASI is developing the Multi-purpose IR Imagin System (MIRIS), of which major objective is to detect the large scale spacial fluctuations of the extragalacticIR background. MIRIS is the main payload of STSAT-3, which will be launched in late 2010.