For us, one year make up a year as a result of Earth takes as many days to finish one orbit of the Sun. But have you ever ever puzzled what number of days make up a year on other planets?
What determines the size of a year?
The size of a year on any planet relies upon on the place the planet is orbiting. Planets which can be nearer to the Sun than Earth can have fewer days in a year, whereas these rotating farther away will take many extra days to make up a year. This is due to two causes – planets which can be nearer to the Sun will take a shorter time to orbit it than these farther away, and the nearer a planet orbits the Sun, the Sun’s gravity can pull on the planet, making the planet orbit sooner.
Why ought to we care?
To ship a spacecraft to a different planet, we have to know the place the planet is in orbit. This will assist us plan and manoeuvre the spacecraft accordingly. Imagine not understanding the place a planet is in orbit; we’d be trying all around the universe for that one planet!
How long every planet takes to orbit the Sun (in Earth days):
Mercury: 88 days
Venus: 225 days
Earth: one year
Mars: 687 days
Jupiter: 4,333 days
Saturn: 10,759 days
Uranus: 30,687 days
Neptune: 60,190 days
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