RMR100114SA hypothetical planet orbiting a red dwarf star.
RMR100115SA hypothetical planet orbiting a red dwarf star.
RMR100116SA binary star system consisting of a red giant and a white dwarf.
FSU100001SArtist's concept of Cygnus X-1, a luminous x-ray source in the constellation Cygnus.
FSU100009SA compact object, or a black hole, is seen ripping off gas from its' sun-like companion.