Sunday, 1 September 2013

Quasars

Quasars are the most intense source of light in the universe. They are the most distant objects in the universe. The brightest quasar, 3C 273, is 2.5 billion light years away. The energy used by quasars come from a black hole at their core,which draws in matter. The black in the quasar has the same mass as a 100 million suns.

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