#0009 | Hubble image of the Helix Nebula converted to sound | Knowlence 2021

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#Hubble image of the #Helix #Nebula converted to sound. Colour is mapped to pitch (red=low, blue=high) and brightness controls volume. Red indicates the presence of hydrogen and nitrogen and blue indicates oxygen. #Nebulae like this are formed when a low mass star sheds some of its outer material near the end of its life (red giant stage). The Helix Nebula, or Eye of #Sauron, is 655 light years away and 3 light years across. It appears half the size of the full moon (huge!) and Hubble images were combined with wide field images from NOTEs #Mosaic Camera to make this image.
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