Orion Nebula in Oxygen, Hydrogen, and Sulfur . ... The Nebula 's glowing gas surrounds hot young stars at the edge of an immense interstellar molecular cloud . ... The Orion Nebula spans about 40 light years and is located about 1500 light years away in the same spiral arm of our Galaxy as the Sun. ... The whole Orion Nebula cloud complex , which includes the Horsehead Nebula , will slowly disperse over the next 100,000 years. ... NASA Web Site Statements, Warnings, and Disclaimers . ...