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Because, by Kepler's laws of motion, they have to go different speeds to maintain their orbits, and though they also have different distances to go because they are different distances from the planet, the speeds are so different that they take different amounts of time to orbit the planet.
What else can I help you with?
How long in days does it take for the moon to orbit the planet?
The Earth's moon takes 27 days to orbit the earth (lunar cycle.) The moons of Jupiter, Saturn, Neptune and Uranus all have different times.
How long does it take for a moon to go around Jupiter?
The orbital periods for the 63 known moons have great variations depending on their distance from Jupiter, from just over 7 Earth hours to over 981 Earth days. The outer 48 moons orbit in the opposite direction from the inner 15 moons. The largest moon, Ganymede, has an orbital period of 7.15 Earth days, racing around the planet in an orbit about a million miles from Jupiter's center.
Why can you only see Jupiter's moons at certain times of the year?
You can see Jupiter's moons any night whenever you can see Jupiter, with the possible exception of times when the Moon is close to it. Just now (2014) Jupiter is mostly visible in midwinter.
Is the orbit of Jupiter larger than the orbit of Earth?
Yes, Jupiter is about 5 times as far from the Sun.
Why does it take so long for Jupiter to orbit the sun?
Jupiter is more than 5 times as far from the Sun as Earth, which makes its orbital path (circumference) more than 5 times as long as Earth's. If it were moving at the same speed as Earth in its orbit, it would take 5 times as long to orbit the Sun. But planets farther from the Sun actually orbit more slowly with increasing orbital distance, so Jupiter actually takes nearly 12 Earth years to make one orbit (Jupiter year). (Earth's orbital speed is about 30 km/sec. For Jupiter it is about 13 km/sec.)
How many moons can go into Jupiter?
The volume of the Moon is 0.02 times the volume of the Earth. The volume of Jupiter is 1,321.3 times the volume of the Earth. So: 1321.3/0.02=66,065 times.
Closest planet to Ceres is?
The closest planetary orbit to Jupiter is that of Mars. The actual closest planet to Ceres depends on where the planets are in their orbits. At different times it may be Mercury, Venus, Earth, Mars, or Jupiter.
When did they find out Jupiter was a planet?
Jupiter was known about in ancient times so no way of knowing when first discovered. it moons were discovered in 1600's.
When did the Galileo spacecraft come back to Earth?
Depends entirely on which satellite of Jupiter you are referring to - they all have different rotation times. And with over 60 satellites, there is no room to catalog the orbital period of all of them here.
What other facts are about Jupiter?
Jupiter is the fifth planet from the sun also, you can fit 1,400 Earths in Jupiter. It's that big that the mass gives it nearly 2.5 times the gravity of Earth. Did you know that out of all the planets Jupiter has the most moons ,some of those moons has water ice and others ones has volcanic activity.
What is the distance from the sun and planet Jupiter?
Part of the answer is that you cannot get an exact distance for all times of the Jupiter year as the orbit of Jupiter around the sun is elliptic as is the earth's journey throughout the year.
How many moons surround Jupiter?
There is a bit of math to this. Assuming that you mean our own moon, we will start with the Earth. The Earth can fit 1321.3 times into Jupiter. If the moon is 4 times SMALLER than our earth, we would multiply that number by four. 1321.3x4=5285.2 So, that means that our moon can fit into Jupiter 5285.2 times.
