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Mercury has the longest "solar "or apparent day. Mercury takes 88 Earth days to go around the Sun, so its year is 88 Earth days. It spins very slowly on its axis though, once every 58.6 Earth days days relative to background stars. A solar (apparent) day on Mercury takes 176 Earth days, because of this slow spin relative to the time taken to orbit.
The spin of Venus relative to the background stars is slower, taking 243 Earth days to spin once on its axis. But since its spin is retrograde (clockwise as viewed from above the north pole) and in the opposite direction of orbit around the sun, the apparent solar day is less, at 116.75 days.
So, Mercury has the longest "Solar day". However Venus has the longest "sidereal day", because that's defined as the rotation period.
What else can I help you with?
Which outer planet has the longest day?
Uranus has the longest day of any planet in the solar system, with a rotation period of about 17 hours and 14 minutes.
Which planet has the longest cycle of day and night?
The planet is Mercury. (Some people think it is Venus, but it is Mercury.)
What is the name of the planet with the longest day compared to an earth day?
Venus. The length of "day" is 243 Earth days. That's the rotation period which is called a "sidereal day". However, there's also a "day" called the "solar day". That's the time for the Sun to complete one apparent journey around the sky. For that definition of "day", it is Mercury that has the longest day at about 176 Earth days.
What planet has the longest revolution?
If you mean revolution on it axis (spin/day length) rather than orbital period, then the answer is the planet Mercury, where time between sunrises is roughly 176 Earth days.
Which terrestrial planet has the longest year?
Pluto has the longest year, if it was still a planet that is, equal to 248.76 Earth years. Since Pluto is no longer considered a planet, the planet with the longest year is Neptune, at 164.8 Earth years per revolution around the Sun.
Which outer planet has the longest day?
Uranus has the longest day of any planet in the solar system, with a rotation period of about 17 hours and 14 minutes.
What planet would you sleep the longest?
The length of a day on a planet would determine how long you sleep. Venus has the longest day in our solar system, lasting about 243 Earth days. So, if you were to live on Venus, you would have a much longer day to sleep through than on other planets.
Which planet has the longest cycle of day and night?
The planet is Mercury. (Some people think it is Venus, but it is Mercury.)
Which planet is longest planet?
Jupiter is the largest with the largest diameter.
What planet has the second shortest day?
Mercury has the 2nd longest "sidereal day" with a sidereal rotation period of 58.646 Earth days. The longest "sidereal day" day is Venus, with a sidereal rotation period of 243.018 Earth daysIf you use the "solar day" as your definition of "day", the order is reversed. Mercury then has the longest day and Venus has the second longest day.
Is the Danube river the longest in the world?
No - the longest river on the planet is the Amazon.
Which planet has the longest rotation?
Venus
What planet with the longest rotation?
venus
Which planet has the longest daylight?
Uranus
Which planet have the longest rotation?
If you count Pluto as a planet its Pluto :D
Which planet has the longest rotation period?
Pluto has the longest REVOLUTION period Venus has the longest ROTATION period
Which planet has the longest revolution and which one has the shortest?
Mercury is the shortest and Neptune is the longest
