?

Hint:

Silk

Rees

collapse

quasar

We had to rethink our ideas of how galaxies were made. To understand the first light at the universe we really have to include the role of the supermassive black holes in galaxy formation.
All previous ideas of galaxy formation had assumed that gas in the early universe simply condensed to form stars in galaxies. Silk and Rees came up with a completely different idea. They proposed that the center of each early gas cloud could have collapsed to form a giant black hole. The black hole would immediately start feeding on the gas around it creating a brilliant quasar.

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