Supernovae are among the most violent phenomena in the universe. They
are huge explosions which put an end to the lives of certain types of
stars. These explosions release immense amounts of energy, so much that
sometimes we can see them from Earth with the naked eye, as points of
light which for a short time are brighter than all the millions of stars
in the galaxies where they are found. After an intense burst of light
lasting a few weeks, supernovae start to fade gradually until they have
effectively burned out,
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