I came across this these little known facts today:
In 1983, a tiny fleck of paint off an earlier spacecraft hit the windshield of the orbiting space shuttle Challenger at 20,000 mph, causing a crater to form in its windshield.
The Earth’s North and South Poles flip polarity on a semi-frequent basis having done so more then 20 times in the past 5 million years. That means that with the next flip, all compasses will be pointing South rather then North.
For more interesting information – check out one of my favorite websites: http://www.mentalfloss.com/
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