Weighing In
Age Is Relative
Planetary Icosahedrons
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Using Views of the Solar System Text
Add A Search Box To Your Pages
How Old Would You Be on Another Planet?

An earth day is about 24 hours long, and an earth year is about 365 days long. Days and years on other planets are different. Some planets have very long days or years, and some are very short. Type your birthday below and click on a planet. Then you will see how old you would be if you had been born there!

Type in your Birthday, and
Click on a planet!

Month: Day:    Year:

Then, click on a planet.

You are earth days old

If you were on

you would be "days" old

and "years" old


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