messier 17: the omega nebula

nebula space astronomy universe cosmos stars galaxy night sky cosmic astrophotography starfield stellar deep star cluster interstellar celestial astronomical starlight nebular dark matter gas cloud outer dust spiral cosmology science milky formation astronomers observatory telescope exploration light years planetary constellation hydrogen radiation infrared spectroscopy wide field messier 17 omega stunning starforming region sagittarius 39aph39 vibrant colors intricate structures testament aweinspiring beauty