Messier 17, also known as the Omega or Swan Nebula, is one of the largest stellar nurseries in the Milky Way. In this image taken with NASA's Hubble Telescope, the central region of the nebula is shown in special colors: green represents oxygen gas, red represents hydrogen and infrared light.

Located about 5,500 light-years away in the constellation Sagittarius, this nebula contains one of the youngest star clusters in our galaxy. These young stars are invisible to the naked eye because of the dense gas and dust surrounding them. But over time, the powerful radiation emitted by the stars erodes and vaporizes the cold gas clouds from which new stars are born.

 

Image description:

Blue and orange stars twinkle throughout the image, intertwined with dark brown dust clouds and bright, glowing blue regions.

 

 Credits: NASA, ESA and A. Kraus (University of Texas at Austin); Processing by Gladys Kober (NASA/Catholic University of America)

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