If you missed the announcement last week about Vito Technology's Egg Hunt Contest don't worry, it's not too late to play. All you need to participate is a copy of the Star Walk astronomy app.
iPhone and iPad apps tagged "astronomy."
Star Walk Gets Astronomical Make Over
Skies Offers Partial Information for Amateur Astronomers
It was a dark and stormy night, so it was a good thing I had Shane MCCafferty's Skies app. With just a quick glance at my trusty iPhone, I was able to see it will be a dark and stormy night at 6pm, 9pm, 12am and 6am.
Watch Solar Flares and Sun Storms With Starquake
Even though it may be central to survival, it's not very often that we give the Sun a second thought. Now, from the safety of your iPhone or iPod Touch you can take a closer look at that big, familiar ball in the sky. Developed by Todd Hopkinson of The Todkin Company, Starquake is a series of ten videos each depicting different astrological phenomenon that have occurred on the surface of the Sun.
Earth3D has some pretty cool 3D effects
Earth3D is a free app that simulates the Earth rotating around the Sun, with the Moon rotating around the Earth. It's free, its interactive and it's fun. But, as someone pointed out, it's not 100% accurate.