In this simulation, you are looking at 4673 galaxies around Milky Way initially from a distance of 200 Mpc (652 million light-years). The Milky Way plane is initially from top to bottom, perpendicular to the screen.
Each galaxy is a square dot of side 26.8 Kpc (87400 light-years), the diameter of Milky Way. Each galaxy contains 100 billion to 1 trillion stars!
Left click on a galaxy: Center and color it yellow
Mouse scroll or Pinch zoom: Move to/from centered galaxy (default Milky Way)
Left click and drag: Rotate
Right click and drag: Pan
Right click on a galaxy: Select and color it green
Milky Way: Always magenta
Bottom Left: Galaxy Search by Name / Catalog Number
Bottom Right: Distance from you