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Because of 3:2 spin-orbit resonance, an observer on planet Mercury would see a day only once every two of its years. Gravitational interaction with other planets are thought to have changed the eccentricity of its orbit in the past such that this ratio may have been different.
Note that because of Venus's retrograde motion (spinning the opposite direction to its orbital motion), its solar day is significantly shorter than its sidereal day - if an observer could see the sun from the surface, it would appear to complete almost two days in its year.
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What planet has a shorter year than day?
venus
Why would another planet have a shorter day than earth?
It's to do with the length of time a planet takes to spin, a planet that spins on its axis faster than the earth will have a shorter apparent day.
What planet has a year shorter than its day?
Mercury has a year that is shorter than its day. It takes Mercury about 88 Earth days to orbit the Sun, but it rotates on its axis so slowly that its day is much longer, lasting about 176 Earth days.
What is the difference between a day a month and a year in terms of astronomy?
In astronomy, a day is the time it takes for a planet to rotate once on its axis. A month is the time it takes for the moon to orbit around a planet. A year is the time it takes for a planet to orbit around its star.
Which planet has a shorter day than Earth?
Jupiter, Saturn, Uranus and Neptune.
What planet's year is shorter than its day?
Venus has a day that is longer than its year. Venus takes about 243 Earth days to complete one rotation on its axis (day), but it only takes about 225 Earth days to orbit the sun (year).
How many hrs in the shortest day of the year?
That depends where you are on the planet. the length of day is shorter the further away from the equator you are.
This planets year is shorter than its day?
Venus
What planet has a day shorter than the Earth?
There are four actually. Jupiter, Saturn, Uranus, and Neptune.
Why is a Saturn year shorter than a Saturn day?
It isn't
A day is longer than a year on this planet?
On this planet, a day is longer than a year because the planet has a very slow rotation on its axis. This means it takes longer for the planet to complete one full rotation (a day) than it does to complete one orbit around its star (a year).
Can a planets day be longer than a planets year?
No, a planet's day cannot be longer than its year. A day is defined as the time it takes for a planet to complete one full rotation on its axis, while a year is the time it takes for the planet to complete one orbit around its star. A planet's year is always longer than its day.
