Hubble Image of Helix Nebula Converted to Sound
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Hubble Image of Helix Nebula Converted to Sound
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 ...
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