High Quality Content by WIKIPEDIA articles! Rainbow (Радуга, pronounced: Raduga) is a fictional planet described in Far Rainbow by Arkady and Boris Strugatsky. This planet is a part of the so called Noon Universe and presents a planetwide experimental laboratory used by null-physicists (scientists working on null-T, a sort of teleportation used in the Noon Universe since the second half of XXII century). It isn`t clear when it was discovered but, presumably, somewhere between 2146 and 2154 AD.