why was there no life on earth?
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Put simply, if there was no Sun, there would be no life on Earth. Technically, Earth probably wouldn't exist either! Because of Earth's ideal distance from the Sun, it receives the perfect amount of heat and light to allow life to be created and to support it.
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What makes the Earth habitable? It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon.
Life is incredibly resilient, and simple organisms have been found everywhere from Antarctica to the bottom of mines; even the so-called Dead Sea supports 'salt-loving' haloarchaea microorganisms. There is one part of the world where nothing thrives, however: the Atacama Desert in Chile.
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