As an aside — and just to give you an idea of how close the Andromeda Galaxy is to Earth — this is what it would actually look like if it were considerably brighter.


Stephen Rahn/NASA/JPL-Caltch.

[ Hubble ]

Image credit: NASA, ESA, J. Dalcanton (University of Washington, USA), B. F. Williams (University of Washington, USA), L. C. Johnson (University of Washington, USA), the PHAT team, and R. Gendler.