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None - but there was an old theory that Pluto MIGHT have been a moon of Neptune.
(It shows up in old Science Fiction stories [see Larry Nevin]).
What else can I help you with?
Which dwarf planet is closer than Neptune 10 percent of the time?
Neptune is always the outermost planet. For about 10% of the time the dwarf planet Pluto crosses inside of Neptune's orbit.
Scientists theorize that this planet may have been a moon of Neptune at one time?
there are 13 moons surrounding the planet neptune and they are called triton (biggest moon), psamathe, nereid, sao, naiaid,neso, halimede,laomedeia, despina, proteus, larissa, thalassa, And galatea :)
What planet's moon takes the longest time to orbit its planet?
Neptune is the gas giant furthest from the Sun and Kepler's third law tells us that the period of revolution of a planet around the sun increases as distance from the Sun increases. It does not matter if the planet is a gas giant or not. The law says period depends on distance and not mass.It takes 60,190 days for Neptune to orbit the Sun which is about165 Earth years. For that matter, one Neptune Year is 89,666 Neptune days.If Pluto was still a planet, it would get the record for the longest year since it is, on the average, further than the other planets.Pluto has an orbital period of 248 earth years. Since Pluto was discovered in 1930, it has only completed about 1/3 of a revolution.Neptune
Which planet takes longest time to move around the sun?
If you still consider Pluto a planet, than Pluto takes the longest time to move around the sun. If not, Neptune takes the longest amount of time.
Why does Triton have retrograde motion?
The orbit of Triton is what's known as a retrograde orbit. This means that the moon orbits in the complete opposite direction of the planet's rotation. Triton is the only large moon discovered in our solar system so far that does this. Scientists and astronomers are not sure why this happens. One theory is that the moon condensed this way from original material in the early solar system. Another theory, and the most widely accepted theory, is that Triton was not originally a moon of Neptune, that it was formed elsewhere and was captured by Neptune's gravity. As a matter of fact, the surface features of Triton and the size of Triton are very similar to the dwarf planet Pluto. From time to time, Pluto does cross Neptune's path of orbit, so it is very likely that Triton was either a dwarf planet itself or a moon of Pluto before Neptune's gravity forced it to switch orbits.
Which dwarf planet is closer than Neptune 10 percent of the time?
Neptune is always the outermost planet. For about 10% of the time the dwarf planet Pluto crosses inside of Neptune's orbit.
What planet has a moon that revolves backwards?
One of Neptune's moons, Triton, revolves backwards. The orbit of Triton is what's known as a retrograde orbit. This means that the moon orbits in the complete opposite direction of the planet's rotation. Triton is the only large moon discovered in our solar system so far that does this. Scientists and astronomers are not sure why this happens. One theory is that the moon condensed this way from original material in the early solar system. Another theory, and the most widely accepted theory, is that Triton was not originally a moon of Neptune, that it was formed elsewhere and was captured by Neptune's gravity. As a matter of fact, the surface features of Triton and the size of Triton are very similar to the dwarf planet Pluto. From time to time, Pluto does cross Neptune's path of orbit, so it is very likely that Triton was either a dwarf planet itself or a moon of Pluto before Neptune's gravity forced it to switch orbits.
Is planet Neptune named after a Goddess?
Yes, planet Neptune is named after the Roman god of the sea, Neptune. In Roman mythology, Neptune was the god of water and the sea. The planet's name reflects its striking blue color and its position as the farthest known planet from the sun at the time of its discovery.
What is the time it takes a planet to orbit the sun?
Depends on which planet/sun!Neptune!!
Scientists theorize that this planet may have been a moon of Neptune at one time?
there are 13 moons surrounding the planet neptune and they are called triton (biggest moon), psamathe, nereid, sao, naiaid,neso, halimede,laomedeia, despina, proteus, larissa, thalassa, And galatea :)
What planet's moon takes the longest time to orbit its planet?
Neptune is the gas giant furthest from the Sun and Kepler's third law tells us that the period of revolution of a planet around the sun increases as distance from the Sun increases. It does not matter if the planet is a gas giant or not. The law says period depends on distance and not mass.It takes 60,190 days for Neptune to orbit the Sun which is about165 Earth years. For that matter, one Neptune Year is 89,666 Neptune days.If Pluto was still a planet, it would get the record for the longest year since it is, on the average, further than the other planets.Pluto has an orbital period of 248 earth years. Since Pluto was discovered in 1930, it has only completed about 1/3 of a revolution.Neptune
Which motion of Triton suggests that it formed independently of Neptune?
The retrograde orbit. The orbit of Triton is what's known as a retrograde orbit. This means that the moon orbits in the complete opposite direction of the planet's rotation. Triton is the only large moon discovered in our solar system so far that does this. Scientists and astronomers are not sure why this happens. One theory is that the moon condensed this way from original material in the early solar system. Another theory, and the most widely accepted theory, is that Triton was not originally a moon of Neptune, that it was formed elsewhere and was captured by Neptune's gravity. As a matter of fact, the surface features of Triton and the size of Triton are very similar to the dwarf planet Pluto. From time to time, Pluto does cross Neptune's path of orbit, so it is very likely that Triton was either a dwarf planet itself or a moon of Pluto before Neptune's gravity forced it to switch orbits.
What is are star?
Our star is the sun, the sun is what all of our 8 planets orbit, it would be 9 planets about Pluto is not considered a planent...since we are talking about Pluto, it could be the moon of a planet called: Neptune, this can somehow happen because Pluto and Neptune, cross each othr at a certain time, and since Neptune is so huge compared to Pluto, Pluto might get trapped and become Neptune's moon, just like how Earth has a moon.
Which planet takes a longer time to orbit the Sun?
Neptune.
Why is some planet don't have moon?
It has to do with the formation of the planet and happenstance. The Earth has a gigantic moon relative to the Earth's size because (it is currently theorized) when the Earth was nearly formed, it collided with another planet (Orpheus) at an oblique angle which scattered debris around the forming Earth. This debris coalesced into what is now our Moon. Mars, Venus and Mercury did not have these types of collisions so they did not have a moon form when they were formed. However, Mars' gravitational pull has captured its moons: Phobos and Deimos. These rocks that look like potatoes are thought to be captured from the asteroid belt. The Jovian Planets, Jupiter, Saturn, Uranus, Neptune all have multiple moons. Most of the Jovian moons are thought to have been formed at the same time as the planets during the accretion phase of the solar system. Some Jovian moons are small captured rocks from the asteroid belt or the Kuiper Belt (the Kuiper Belt is a ring of rocks and ice left over from the formation of the solar system which revolves around the sun outside the orbit of Neptune.) The largest captured moon is thought to be Neptune's moon Triton. This moon revolves around Neptune in a "retrograde" orbit. This means the moon goes around Neptune in the opposite direction in which Neptune spins. It is about 3/4 the size of the Earth's moon and could have been a planet in its own right. But it was captured by Neptune and is doomed to crash into the planet or be torn apart by tidal forces creating a new ring system around Neptune in a few million years. Neptune has 4 known moons that are thought to be captured Kuiper Belt objects Pluto, no longer considered a "planet" rather a "Dwarf Planet", has a moon, Charon. It is thought that both Pluto and Charon are two individually formed Kuiper Belt chunks of ice and dust that are caught in a gravitational dance.
Is Neptune the fartherest planet from the sun?
Yes. Pluto used to be (at least most of the time since, its orbits crosses that of Neptune) but now Pluto is considered a dwarf planet.
The nineth closest planet to the sun?
At this moment in time (2010) the last plant is Neptune - the eight planet from the Sun.
