NASA's New Horizons deep-space probe has, for the first time, returned images to Earth that showed stellar parallax, or how the positions of stars shift when seen from two different places. This could ...

A wide open space (It could be your backyard or a park.) Two Hula-Hoops (Alternatively, you could use two flat rocks or bricks that you can sit on.) A yardstick or meterstick (Use one that has clear ...

The Department of the Air Force partnership intermediary agreement Academic Partnership Engagement Experiment, or , program, administered by Parallax Advanced Research helped build and launch the Air ...