Jupiter Moons
See exactly where Jupiter's four large moons are at any time.
Moon Globe
Hold the Moon in your hands. Moon Globe turns your iPhone, iPod Touch or iPad into a precision instrument for viewing Earth's Moon. Satellite imagery and topographic laser altimeter data are combined to render the Moon with realistic lighting in realtime
Satellite Flybys
The International Space Station. Hubble. Astronauts, taikonauts, and cosmonauts. They fly overhead more often than you think. All you need to know is when to look.
Sky Map
just point your phone / tablet at the sky and magically get a full explanation of everything you are looking at.
Cloudy Nights
Astronomy web site with discussion groups and forums, including the famous Beginners Forum where friendly experts answer all questions with humor and good grace.
Stellarium
Free software that turns your PC or Mac into a planetarium. Shows you exactly what is in the sky now or at any time past or future. Runs on Linux too!