## Sunday, March 29, 2015

### Details, Details, Details, ...

March 29th, 2015

How long is a year on Neptune?
Well a year on Neptune takes 1 Neptunian year, duh.  But that year on Neptune is a little less than 165 years on Earth.  A Neptunian day lasts a little longer than 16 hours on earth.  It all works out that there are 60,190 Neptunian days in a Neptunian year.
If you were born on Neptune, you would probably no live long enough to celebrate your first birthday.
If you studied Mathematic on Neptune the “Neptunian Birthday Problem” (How many Neptunians have to be in a room before you have over a 50% chance that at least two of them have the same birthday?) would be considered advanced math.
If you lived on Neptune you might not ever have a chance to celebrate Pi Day (remember it only comes once year), and you certainly would not have a chance to celebrate it twice in your life time.
What about the Moon?  The Moon’s year is as long as an Earth year since we orbit the Sun together.  The Moon’s day last about 28 Earth days.  So the Moon experiences about 13 days a year.  Pi Day on Earth is the 73rd day of the year (74th day of the year in a leap year).  If your year is only 13 day, you will never make it to the 74 year.  Moonies simply don’t have time to celebrate Pi Day.  But if they did it would last for 28 Earth days – what a party!
What other observations can you make about mathematics and life in general on Neptune or the Moon.

David