NASA makes surprising discovery at the end of our universe: 'It shouldn't exist'

Astronomers have discovered three ultra-massive 'Red Monster' galaxies that formed within the first billion years after the Big Bang. But cosmological models say they shouldn't exist.

NASA makes surprising discovery at the end of our universe: 'It shouldn't exist'
Astronomers have discovered three ultra-massive 'Red Monster' galaxies that formed within the first billion years after the Big Bang. But cosmological models say they shouldn't exist.