Astronomical curiosity of a day #2
Age on other planets?
How old am I?
We used to calculating person age typically based on years from its born. But what 'year' actually means? 365 days (and sometimes 366), right? But why? Because this is an amount of time when Earth makes full circle around the Sun. Ok, so measurements of age is based on Earth motions around its axis and around the Sun. As we know, different planets moves very differently. It depends on its size, mass, distance from Sun. What would we obtain if for calculating age e.g. Neptunian days/years would we use?
You can check it here: click.
Let's say someone was born 1st January 1990. How old would this person be measuring by other planets days/years:
| Planet | days from born | years from born | remark |
|---|---|---|---|
| Mercury | 172.6 | 115 | - |
| Venus | 41.6 | 45 | pretty cool! on Venus day is longer than year! |
| Earth | 10118.3 | 27.7 | obviously |
| Mars | 9823.6 | 14.7 | - |
| Jupiter | 24678.9 | 2.33 | crazy things are happening, only 2.33 year old due to Jovian years |
| Saturn | 22485.2 | 0.94 | - |
| Uranus | 14053.2 | 0.32 | - |
| Neptune | 15102 | 0.16 | - |
| Pluto | 1583.4 | 0.111 | during 27.7 Earth years, Pluto move only 1/9 distance around the Sun |
Visualization
To imagine situation described above I prepared simple GIF in solar system simulator. Starting point is 1st January 1990 and last 14th September 2017. Please notice that sizes of planets are not in correct scale.
It's crazy to know if you were born on another planet or moved to another planet, that your age would be a lot different if comparing your own planets to earth's!
Great post😊😊😊
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