Judging by your question, you know that a
year is proportional to the time it takes a
planet to orbit the Sun, so when you go to
figure out your age on the sun, it doesn't make
any sense. The problem comes with the
definition. However, if we say that a year is
equal to the time it takes the Earth to complete
a full orbit around the Sun, then we have no
In general, humans tend to work pretty well
with units between 1 to 100, so we invent units
to keep numbers in this range. For example, you
know when something is 100 feet, 100 yards, 100
miles, 100 lbs, etc. Once numbers get too big,
we just make new units. (For computers, we have
500 MHz, 1.2 GHz, 200kB, 1MB, 500 GB, 1 TB; we
usually don't let the number get bigger than
1000 before we change units, which is the whole
magic of the metric system and just adding
If I were on the sun, I wouldn't be
calculating my age, because I'd be all burned up!
But if you're thinking about gravity, I don't
think gravity affects our age. We weigh less on
the moon, but I think we're the same age.
And if you're thinking about relativity and
related things, I still think our age would be
the same, because the sun and the earth and the
rest of the solar system are all moving through
Keep asking questions!
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