The Avalon Planetarium is located in the virtual world of Second
Life, in the Steampunk region of Caledon South End.

To get to Caledon, launch the Second Life Viewer and log in.

Leave your Web Browser running.

Come back to this web browser and click on this link:
http://maps.secondlife.com/secondlife/Caledon%20SouthEnd/125/152/24,
and on the map that follows click on "Visit this location".

Go back to the Second Life viewer, and click teleport in the sub-window
that just popped up. You will end up in front of the planetarium.