Orion Nebula (M42) – Here is the best nebula ever – The Orion Nebula (M42) – the object in the middle. It is the brightest nebula (a cloud of gas) as seen from earth and is visible to the naked eye in the night sky. M42 is located at a distance of 1,344 ± 20 light years and is the closest region of massive star formation to Earth. The M42 nebula is estimated to be 24 light years across. It has a mass of about 2000 times the mass of the Sun. Observations of the nebula have revealed approximately 700 stars in various stages of formation within the nebula. You can also see the Running man Nebula (a reflection nebula on the top-center), because it looks like a running man! Taken on Stellarvue SV80S with 67 images of 3 min each.