Say you have a curious kid and you want to confirm the planet is round to, you know, show off how experimental results can verify mathematical ones.    If you are with the Brooklyn Space Program group, you build your own spacecraft, of course.

But it isn't that easy.    You can put a camera on a balloon, sure, but your camera needs to survive 100 MPH winds, temperatures of -60, speeds of 150 MPH and maybe a water landing.  To find it if it does land safely, you need to have a GPS attached that transmits coordinates to a cell tower.

Here is their story:

Old NID
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