Brooklyn Space Program

Here a Son & Father launched a balloon from Newburgh, New York, and it climbed at a rate of 25 feet per second to 19 miles above the surface of the earth, high enough to see the curvature of the earth.  Once at altitude the balloon burst and the craft containing the iPhone and the camera fell back to the ground on a parachute.

They were then able to track the craft via the iPhones on board GPS.

You can see more images of their flight or support their effort on their website