Saturday, March 14, 2015

Tonight's Sky for March 14: Once a Century Pi Day


Today is Pi Day, which serves to celebrate the ratio of a circle's diameter to its circumference. Celebrated every year by math as well as science enthusiasts, this year's event is somewhat unique in that the date 3/14/15 corresponds to Pi's value to 4 decimal points: 3.1415. Normally, there's just the 3.14 but, thanks to this being 2015, we add the two decimal places for a once a century occurrence.

To celebrate, NASA has released this educational infographic as well as this one.

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