Uranuses year is 84.3 Earth years
From 1 to 54.72 billion years
This is how long it takes the first 5 planets to orbit the Sun. Mercury: 0.2 years Venus:0.6 years Earth: 1 year Mars: 2 years
The planets in our Solar System have existed pretty much as long as the Solar System - about 4.6 billion years. Planets in other, older, solar systems may have existed quite a bit longer - almost as long as the Universe (which is 13.8 billion years old).
planets sun very long time
The "Solar day" on Venus. Or, the "Sidereal day" on Mercury.
Old the planets are. Billions of years old are all of them.
Saturn orbits the Sun like the other planets, it does not orbit anything else. One orbit for Saturn takes 29.4571 Earth years.
Neptune, the farthest planet from the Sun, takes the longest to complete one revolution around it, requiring about 165 Earth years. Among the dwarf planets, Pluto takes about 248 Earth years to orbit the Sun. Other dwarf planets like Eris and Haumea also have long orbital periods, with Eris taking approximately 558 Earth years to complete one revolution.
One, that being essentially the definition of a planet's year.
the planets align every millenia
Approximately another 4.5 billion years. That's when the sun will expand and engulf the inner planets, including earth.
Voyager took 9 years using a favourable positioning of other planets on the way there.