* Astronomy

Ping pong ball 'satellites' to have balloon ride to edge of space

A do-it-yourself space program is gearing up to return to the edge of Earth's atmosphere, floating above the world and the boundary between the sky and stars. All manner of payloads, a majority of them contained in ping pong balls created by students from all over the globe, will be carried by a series of weather balloons later this month.
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