Have you ever wondered what that bright object in the pre-dawn morning was that you couldn’t help notice? Or is that reddish star Mars? Is that fuzzy mass of white a wispy cloud or a galaxy?
Note the time you saw the object and where you saw it (towards the east near the horizon, for example) and Kstars will tell you what the object is. Kstars is a desktop Planetarium that will open the heavens to your understanding.
Kstars is of course, open source. It can be installed on most Linux systems either alone or as part of the kdeedu (KDE Educational) package. It will run well enough on a Pentium IV while using only 80 megabytes of RAM but it’s really spectacular running on a multi-core system with several gigabytes of RAM.