Reid experiments with a compass
Oct 19, 2014
This is a fascinating video clip.
ISS astronaut Reid Wiseman attached a compass to his computer screen, and then made a 2 hour long movie (here condensed to 2 mintues) showing one orbit (and a bit). The map shows the orbital path, as the ISS icon moves along.
This is a bit of a challenge. We'll even call this a good one for the space geeks. What is going on? What makes the compass slowly rotate one way then another?
We'll give you a hint - the compass is VERTICAL. The bottom of the compass points down to the Earth, the top of the compass points up.