Galaxies like Andromeda have a supermassive black hole at the centre
NASA/JPL-Caltech
Supermassive black holes appear to be more powerful than our theories suggest, blasting the gas that surrounds galaxies much further away than expected. This finding could help explain several cosmological conundrums, including the fact that the universe seems to be missing large amounts of gas.
Most objects that we can measure in the universe, like stars and galaxies, emit light that we can observe from Earth. But measuring cold or spread-out gas, which is crucial for our understanding of how the universe works, is trickier because it often…