EUROPEAN SOUTHERN OBSERVATORY / SCIENCE PHOTO LIBRARY EUROPEAN SOUTHERN OBSERVATORY / SCIENCE PHOTO LIBRARY
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Supernova in spiral galaxy NGC 1559 on 6th August 2005, Kueyen Very Large Telescope image. The supernova is the bright star-like dot just above the galaxy. It is a type 1a supernova, produced when a white dwarf accretes matter from a companion star until it reached a mass at which it exploded catastrophically. NGC 1559 is a small galaxy some 50 million light years from Earth in the constellation reticulum.
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