Red giant star ejecting shell of gas, HST image

Red giant star ejecting shell of gas, HST image

C038/9398

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Caption

Red giant star ejecting shell of gas. Hubble Space Telescope (HST) optical image of the red giant star U Camelopardalis, surrounded by a shell of gas it has ejected. This ejecting of a shell of gas occurs every few thousand years as the star begins to run out of fuel and fuse helium in the outer layers of its core. This star (which is also a carbon star) is around 1500 light years from Earth, in the constellation of Camelopardalis. This image was obtained with the High Resolution Channel of the HST's Advanced Camera for Surveys (ACS). Image published in 2012.

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