NASA / JPL-CALTECH / UCLA / SCIENCE PHOTO LIBRARY NASA / JPL-CALTECH / UCLA / SCIENCE PHOTO LIBRARY
IC 443 supernova remnant, infrared image. When a large star dies, gas shells explode outwards and collide with interstellar material. The energy of the collision ionises the gas, causing it to glow. IC 443 is located around 5000 light years from Earth, in the constellation of Gemini. It has a diameter of around 70 light years. This image, published in 2010, was obtained by NASA's Wide-field Infrared Survey Explorer (WISE).
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