New recipe found for making supermassive black hole
Take two primordial galaxies, slam them together to create ‘dark collapse’
ANCIENT HEAVYWEIGHT A quasar like the one illustrated here is an ultrabright galaxy with a supermassive black hole at its center. Scientists want to know how black holes grew fast enough to fuel quasars found less than a billion years after the Big Bang.
M. Kornmesser/ESO