Pluto has the longest year, if it was still a planet that is, equal to 248.76 Earth years. Answer. A gas giant planet, artist's impression shown, has been found in an orbit around a star that takes 80,000 years. What effect does Earth’s gravitational force have on objects of different masses? It is one of the most distant planets from a star that has yet been discovered. Astronomy Our Solar System The Planets. Uranus. Neptune. The length of the day is exactly the same on all of the giant planets. Uranus 3. But the Sun doesn't rise and set each "day" on Venus like it does on most other planets. They all have roughly the same year. 1 Answer chandramohanPanakkal Apr 29, 2017 Neptune. What planet has the longest year? Confirmed by yumdrea [6/27/2014 1:21:28 PM] Comments. It completes one rotation in 243 Earth days — the longest day of any planet in our solar system, even longer than a whole year on Venus. Add an answer or comment. It takes around 600 and some odd days for mars to make one revolution around the sun, and earth is 365, so two earth years is roughly one martian year. Answer Earth and mars have about the same rotational period, around 24 hours. 2. Jupiter. 3. Which of the jovian planets has the shortest period of rotation (the shortest day)? Venus is one of just two planets that rotate from east to west. Explanation: 164.8 Earth years. A. Jupiter B. Log in or sign up first. Saturn. In the case of Mars, it's year is about twice as long as Earth's and lasts for 687 Earth Days. One orbit around the Sun takes almost 165 Earth years instead of just one year here on Earth. The jovian planet that has the longest year (period of revolution) is 1. In the solar system, which planet would be the hottest one to live on, and which planet would be the coldest one to live on? Saturn 2. Mars is the terrestrial planet which has the longest year. Neptune. Dwarf planet Pluto has the longest year of all the known planets (so far), at 248 years. Well, the planet in our Solar System with the longest year is Saturn with a year lasting for 24.46 Earth Years, followed by Jupiter which has an year that is 11.86 Earth Years long. Answer. Which planet has the shortest period of revolution, and which planet has the longest period of revolution? The coldest planet in our solar system is Neptune. This answer has been confirmed as correct and helpful. 1. Kepler is a German and he comes a little bit before Galileo. Mars has the longer year. Answer link. Added 6/27/2014 1:11:42 PM. 5. Its day is a lot shorter, but still longer than Earth's, at six Earth days and 9.5 hours. Pluto is tipped over on its side at an angle of 122 degrees with respect to the Sun. 4. Earth C. Mercury D. None Related MCQs:Which of the following country has longest coast line?Which is the longest border between two countries?Which planet has the smallest diameter?Which planet is the nearest to earth in our solar system?Which Day Is Considered As The Shortest Day Of Each Year?Windows 10 was launched in which ... Read more Which planet has the longest year? Log in for more information. Like Uranus, Neptune shines so blue due to traces of methane in the topmost layer of its atmosphere. As the farthest planet from the sun, Neptune receives little to no warmth from solar rays. As such, it has an extremely low average temperature, resting at negative 331 degrees Fahrenheit, and is … A year is defined as the time it takes a planet to make one revolution around its star. Neptune, the farthest planet in our Solar System (sorry, Pluto is not designated as a planet any more), has the longest year of all the planets. There are no comments. Name the planet with the shortest year and the planet with the longest year. Only Venus and Uranus have this "backwards" rotation. Related questions.