If you're a meteor maven or stargazer, this is the weekend for one of the year's best meteor showers, the Lyrids. The Lyrids come to maximum strength April 21-22, which for those of us in North America means late Sunday night and early Monday morning. The shower is caused by the Earth passing through the orbit of space debris left by a comet, and usually dazzles viewers with 10-20 meteors per hour from a point in the sky close to the bright star Vega in the constellation of Lyra.
How can iOS help? Well, there are a lot of astronomy apps that will point you in the right direction using the compass and elevation sensors, and give you some background on meteors and their origins.