andromeda-galaxy-herschel-2013-lgPerth, Australia (SPX) Mar 04, 2014 – Australian astronomers have discovered what makes some spiral galaxies fat and bulging while others are flat discs – and it’s all about how fast they spin. The research, led by the International Centre for Radio Astronomy Research (ICRAR) in Perth, found that fast-rotating spiral galaxies are flat and thin while equally sized galaxies that rotate slowly are fatter. The study was published … more