FREE FOR ONE DAY: Monday, July 20th, 2009 - to commemorate the 40th anniversary of the first manned lunar landing!

SkyVoyager is a powerful astronomy program, with a database of 300,000 stars and 30,000 deep sky objects. It renders the planets and moons in detail, using NASA mission imagery.

SkyVoyager is a planetarium that precisely shows the sky from any location on Earth, at any time in the past or future. It contains informative descriptions of the planets, stars, and constellations; and includes hundreds of images from both NASA and leading astro-photographers.

If you have a computer-controlled telescope, SkyVoyager can use your iPhone or iPod's WiFi to point it in the sky. SkyVoyager's simple user interface, and its ability to wirelessly control your scope, make it an invaluable tool for exploring the heavens.