Before our minds start to reel at these scales, let's return to the Andromeda Galaxy and examine it from our vantage point on the dust-grain planet we call Earth. The remarkable thing is that the ...

The Andromeda galaxy is surrounded by a constellation of dwarf galaxies that are arranged in a highly lopsided manner.

Dozens of dwarf galaxies swarming ... the same orbital plane around the Andromeda galaxy and form the dwarf galaxies there, a bit like moons forming around a planet. However, another team of ...