Example image of eyePlorer eyePlorer map for 'The Gods Themselves': 1972 Isaac Asimov Novel Science fiction Hugo Award Hugo Award for Best Novel Nebula Award Nebula Award for Best Novel Parallel universe (fiction) Physical law Milky Way Quasar Sun Supernova Isotope Tungsten Etruscan language Nova Strong interaction Robot Sexual norm Social constructionism Sexual intercourse Moon Selene 1982 February 12 Computer animation Gold (Asimov short story) Russian language 1853 1932 Explosive material Fertilizer Ostwald process Wilhelm Ostwald 1759 1805 Friedrich Schiller 1971 Robert Silverberg 1972 in literature List of joint winners of the Hugo and Nebula awards Barlowe's Guide to Extraterrestrials Lucky Starr and the Rings of Saturn 1973 in literature 31st World Science Fiction Convention List of science fiction novels List of fiction employing parallel universes List of novelists from the United States