Find out what your age would be on other planets in the Solar System

A person has a birthday whenever they complete a new year of life, that is, when they have lived the 365 days that complete this period. This time also means that the Earth made a complete circle around the Sun.

But it seems that on the other planets in the Solar system, it doesn’t work quite like that. It is believed that a year can change according to the dimensions of the other planets in the cosmos.

In this sense, the age that each person is can also be different. This wide diversity of planet orbits and rotations can cause everything to change — a lot.

Find out how old you would be on other planets

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Here on Earth, we know that a day has 24 hours and a year has 365 days (if it is not a leap year, when it gains an extra day). However, this metric changes a lot depending on the planet.

Want to know how old you would be in other places? We tell you!


Prepare to be surprised: a person born in 1998 would be 25 years old here on Earth. However, on the planet Mercury, where each year has only 87 Earth days, it would simply be 105 years old!


The translation into Mars it is almost twice that of Earth. In this sense, a 30-year-old person here would be at the height of their 15 years there and would have lived around 10,637 Earth days.


On Neptune, our age would be downright curious. A person around 25 or 30 years old wouldn’t even have blown out the candle from their first year of life. This is because one year on Neptune is equivalent to 164 Earth years.


On Venus, things would be simply surreal. It’s just that, there, it takes longer to spend a day than to spend a year!

To be clearer: translation means the displacement of a planet around the Sun, which results in years. One translation is equal to one year. Rotation is related to the movement of this planet around its own axis, which forms the days. Thus, one rotation is equal to one day.

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While a year has 225 Earth days, a day on Venus would last 243 Earth days. This is because Venus rotates faster around the Sun than around itself!

Understand the determining law

The trajectories of the planets are elliptical — and not circular, as many think. This was established by “Kepler’s Laws”, based on the studies of Johannes Kepler and Tycho Brahe, two astronomers who were fundamental in explaining the movement of planets and other phenomena, such as asteroids and comets.

Therefore, the most information we can have is an equivalence. But, as you yourself saw in the previous example, in some cases, such as Venusthe equivalence ends up making our brains spin in knots because they are so far from our reality.