QUASARS

 

Q1.What Is A 'Quasar'?

A 'quasar' is an extremely luminous 'active galactic nucleus', in which a supermassive black hole with mass more than millions to billions of times the mass of the Sun is surrounded by a gaseous accretion disk. 'Quasars' are the brightest objects in the universe, and possibly the most distant detected so far. 'Quasars' stands for 'quasi-stellar radio sources'. The first 'Quasar', '3C273', was discovered in 1963.

Then many other 'Quasars' were soon discovered. 'Nuclear Fusion Process' could not account for their energy output, because 'supermassive black holes' release only a tiny amount of their total mass as pure energy.

'TON 618' is a very distant and extremely luminous 'Quasar'.  It is a hyperluminous, broad-absorption line, radio-loud 'Quasar'. It located near the 'North Galactic Pole' in the constellation 'Canes Venatici'. 'TON 618' is currently the most biggest quasar ever discovered and the mass of this supermassive black hole is 66 billion times of the solar mass. 1 solar mass is nearly equal to 2 x 10**30 kg. ** means exponent.'TON 618' is 10.37 billion light years away from us.