An exploration of “dark flow”, the disappearance of swathes of the universe, and how it may lead scientists to reconfigure their understanding of the universe., There’s something very odd going on in space – something that shouldn’t be possible. It is as though vast swathes of the universe are being hoovered up by a vast and unseen celestial vacuum cleaner. The accidental discovery of what is ominously being called ‘dark flow’ not only has implications for the destinies of large numbers of galaxies – it also means that large numbers of scientists might have to find a new way of understanding the universe., It is as though vast swathes of the universe are being hoovered up by a vast and unseen celestial vacuum cleaner. The accidental discovery of what is ominously being called ‘dark flow’ not only has implications for the destinies of large numbers of galaxies – it also means that large numbers of scientists might have to find a new way of understanding the universe.