Simulation showing a Milky Way-like galaxy around five billion
years ago, when most satellite galaxy collisions were
happening.
1024x1024, 300dpi, 302kb
Credit: Andrew Cooper,
John Helly (Durham University)
Simulation showing the stellar halo of a Milky Way-like galaxy
in the present day.
3114x3114, 300dpi, 1.3Mb
Credit: Andrew
Cooper (Durham University)