Washington, Jan 16 : The Hubble Space Telescope has snapped images of a unique planetary nebula, which is nestled inside a star cluster, 10,000 light-years away from Earth.
The Hubble image was taken in November 2008 with the Wide Field Planetary Camera 2.
The colors in the image represent a range of emissions coming from the clouds of the nebula: red represents nitrogen, green represents hydrogen, and blue represents oxygen.
The nebula, known as NGC 2818 is inside the open star cluster NGC 2818A. Both the cluster and the nebula reside over 10,000 light-years away, in the southern constellation Pyxis (the Compass).
NGC 2818 is one of very few planetary nebulae in our galaxy located within an open cluster.