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. (in Education)