CHRIS BUTLER / SCIENCE PHOTO LIBRARY CHRIS BUTLER / SCIENCE PHOTO LIBRARY
Supernova. Computer artwork of a supernova (pink) in the barred spiral galaxy NGC 1300. A supernova is the explosive death of a star, which for a short while can outshine an entire galaxy. Only massive stars undergo a supernova, which occurs as the star runs out of fuel. The outer layers of the star are then cast off into space. NGC 1300 lies around 75 million light years from Earth in the constellation Eridanus. Its central bar is around 150,000 light years across. For an image of NGC 1300 without the supernova, see image R820/382.
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