Illustration of the outflow (red) and gas flowing in to the quasar in the centre (blue). The cold clumps shown in the inset image are expelled out of the galaxy in a 'galactic hailstorm'

Galactic ‘hailstorm’ in the early Universe

16 January 2015

Astronomers have been able to peer back to the young Universe to determine how quasars – powered by supermassive black holes with the mass of a billion suns – form and shape the evolution of galaxies.

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