Aciqra is an open source virtual planetarium and sky map program. It has the ability to track nearly 120,000 stars, the 8 planets, all 109 Messier object, the sun and the moon from any location on Ear... More

Aciqra is an open source virtual planetarium and sky map program. It has the ability to track nearly 120,000 stars, the 8 planets, all 109 Messier object, the sun and the moon from any location on Earth to an accuracy of 1 degree for the next 50 years. It also includes a wealth of built-in tools called "widgets" which include a solar system viewer, an eclipse/transit predictor and a conjunction engine.  [edit]  Less