What is up with these dwarf galaxies? A survey of thousands of galaxies using the Sloan Digital Sky Survey reveals something interesting, which was first revealed by looking at the massive Andromeda Galaxy nearby Earth: dwarf galaxies orbiting larger ones are often in disc-shaped orbits and not distributed randomly, as astronomers expected. The finding follows … Continue reading "Dwarf Galaxies That Dance? Andromeda Observations Reveal A Larger Cosmic Mystery"