... NGC 7331 and Beyond . ... About 50 million light-years distant in the northern constellation Pegasus, NGC 7331 was recognized early on as a spiral nebula and is actually one of the brighter galaxies not included in Charles Messier's famous 18th century catalog. ... W5: Pillars of Star Formation . ... Here, a high concentration of dust and molecular gas absorb practically all the visible light emitted from background stars. The Infrared Visible Andromeda . ... What lights up the Flame Nebula? ...