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For the same reason that the earth's distance from the sun is always changing. The orbits are elliptical and not circular. Virtually all orbits in the solar system are elliptical, Pluto's being the most extreme of the major and minor planets. Some of the moons come close to having no eccentricity.
What else can I help you with?
Why does the moons distance from earth very in a cyclic matter?
The moon is under the influence of both the Earth's and the Sun's gravitational pull.
How far is callisto to earth in au?
Callisto is one of Jupiter's moons and its average distance from Earth is about 391 million miles or 0.168 AU (astronomical units).
How many miles is the earth to Europa?
Europa is a moon of Jupiter, so the distance will vary. However the approximate distance to Jupiter, from Earth is 365 million miles
How far is Jupiter from the Moon?
Earth and Jupiter orbit the sun at different distances and speeds so the distance from Earth to Jupiter itself varies a lot. On average, the distance of any moon of Jupiter to the Earth is the distance from Earth to Jupiter.
How far away from the earth is the moon compares to the sun?
The Sun is about 400 times further away from the Earth than the Moon is.
Why is the moons distance from the earth continually changing?
elliptical orbit with earth at one focus.
Why does the distance between the earth and moon change?
It varies, since the moons orbit around earth is not perfectly circular and central.
What is the distance of jupiters moons in astronomical units?
Answer: you would have to be specific there are a lot of moons orbitting Jupiter Answer: The distance from Earth to Jupiter's moons is the same as the distance from Earth to Jupiter. The distance from Jupiter to its moons is insignificant, and can be ignored.
Why does the moons distance from earth very in a cyclic matter?
The moon is under the influence of both the Earth's and the Sun's gravitational pull.
How close does the moon get to the sun?
The moons distance from Earth varies during its orbit, but is around 363,100 km or 225,620 miles at its closest (Perigee). Although this seems quite far, its only a small distance when compared to the Earth sun distance, which is 147,098,290km or 91,402,600 miles at its closest. So the moons closest distance to the sun will be around 146,735,200km.
How moons are in earth?
There are no moons in Earth. But around Earth, yes. There is one.
Are there moons and stars on planet earth?
No, there are not moons or stars ON planet earth, but there are moons and stars around planet earth. == ==
How far away is the moon on the average?
Our moons average distance from the Earth is 384,399 km (238,854 miles) on average.
What moons are close to Venus?
There are no moons around Venus or Mercury. So the closest moon to Venus is the Moon orbiting the Earth, which is not really any closer than Earth is. (Venus is always at least 100 times farther away from Earth than the distance of the Moon.)
Why is the Earth's and the moons distance told in an average?
Because they change, and are not constant. No closed orbit is a perfect circle. They're ellipses, with the 'central body' off center, at least slightly. So the distance between the two bodies changes at different parts of the orbital period.
How far is callisto to earth in au?
Callisto is one of Jupiter's moons and its average distance from Earth is about 391 million miles or 0.168 AU (astronomical units).
What was the smallest distance between the Earth and the moon?
The moons distance from Earth varies during its orbit, from around 405,696 km or 252,088 miles at its furthest (Apogee) to 363,104 km or 225,622 miles at its closest (Perigee).
