ESA JHelioviewer a Window on the Mechanics of the Sun
I wouldn't call myself an Astronomer or anything close but I do have an avid interest in application tools that change or can change my perspective on what we are, where we came from and perhaps where we might go. I have found many, well some at any rate, simulator applications don't really belong in games for games they are not. This and these are all very serious tools that help the more intelligent amongst us understand, hopefully our small part in the Universe.
Linux Simulation Games
A difficult classification so we have decided to extend the classification category to include simulations, some might argue the applications are educational and your right or at least they can be, they are also applications that require skill, however although these games (simulations) require skill to use properly it is still relatively easy to use without fear of going wrong.