The most feature-rich free astronomy software
KStars caters to a wide-variety of use cases. Whether you are a student, an educator, an amateur astronomer or an astronomy enthusiast, you will find tools in KStars that are useful to you. Have a look at the Features page for a full listing of features, organized by use case.
Graphical simulation of the sky with the planets, up to 100 million stars, 10000 deep-sky objects, comets and asteroids. Adjustable simulation rate.
Access to several internet resources for information, imagery and data
Complete astrophotography workflow
A host of tools that predict conjunctions, plot time variation of positions of planets, perform calculations etc.
Powerful observation planner to plan your observations