The Rosette Nebula is an emission nebula located about 3000 light years away. The great abundance of hydrogen gives NGC 2237 the red color with which it appears in most of the photographs. The wind that comes from the open cluster known as NGC 2244 has made a hole in the center of the nebula.
This photograph was taken in light emitted by three elements of gas ionized by the energetic central stars. Green light is caused by oxygen and blue light from sulfur, hydrogen red. Dust filaments bind in the nebula. The origin of molecular knots that move rapidly and were recently observed in this nebula are still under investigation.
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|Nebulae in the Milky Way||Rosette Nebula|