Mars has two known moons. Named for the mythological sons of Ares (the Greek counterpart of the Roman god, Mars), Phobos means 'fear' and Deimos means 'flight' (as in running away or fleeing).

These moons are amongst the smallest in the solar system. Phobos whips around Mars three times a day, while the more distant Deimos takes 30 hours for each orbit. Additionally, like Earth's Moon, Phobos and Deimos always present the same face to their planet.

In terms of eclipses, Phobos is not quite large enough or close enough to Mars to create a total solar eclipse. Interestingly, transits of Phobos occur somewhere on Mars on most days of the Martian year. (A transit being when Phobos passes directly between the Sun and a point on the surface of Mars, obscuring a large part of the Sun's disc for an observer on Mars). Due to the small size of Phobos and its rapid orbital motion, an observer on the surface of Mars would never experience a solar eclipse for longer than about thirty seconds! As Phobos cannot create a total solar eclipse, these are always annular eclipses, hence the Sun appears as a very bright ring, or annulus, surrounding the dark disk of Phobos.

Deimos is very different to Phobos when it comes to Martian eclipses. During a transit, Deimos can be seen from Mars as a small dark spot moving rapidly across the Sun's face. The event could be referred to as a partial eclipse of the Sun by Deimos, though due to the close proximity of Deimos to Mars, it is more natural to refer to it as a transit. The best an observer on Mars would see is a small spot crossing the Sun's disc as opposed to any notable eclipse.

Jupiter has a total of 69 moons, 53 of which are named:

1. Adrastea 2.Aitne 3.Amalthea 4.Ananke 5.Aoede 6.Arche 7.Autonoe 8.Callirrhoe 9.Callisto 10.Carme 11.Carpo 12.Chaldene 13.Cyllene 14.Dia 15.Elara 16.Erinome 17.Eukelade 18.Euanthe 19.Euporie 20.Europa 21.Eurydome 22.Ganymede 23.Harpalyke 24.Hegemone 25.Helike 26.Hermippe 27.Herse 28.Himalia 29.Io 30.Iocaste 31.Isonoe 32.Jupiter LI 33.Jupiter LII 34.Kale 35.Kallichore 36.Kalyke 37.Kore 38.Leda 39.Lysithea 40.Megaclite 41.Metis 42.Mneme 43.Orthosie 44.Pasiphae 45.Pasithee 46.Praxidike 47.Sinope 48.Sponde 49.Thebe 50.Themisto 51.Taygete 52.Thelxinoe 53.Thyone

Three of the moons influence each other in an interesting way. Io is in a tug-of-war with Ganymede and Europa, and Europa's orbital period is twice Io's period, and Ganymede's period is twice that of Europa. In other words, every time Ganymede goes around Jupiter once, Europa makes two orbits and Io makes four orbits. The moons all keep the same face towards Jupiter as they orbit, meaning that each moon turns once on its axis for every orbit around Jupiter.

Jupiter's four largest moons are called the Galilean satellites after Italian astronomer Galileo Galilei, who first observed them in 1610.

First is Io, the most volcanically active body in the solar system. Io's surface is covered by sulfur in different colorful forms. As Io travels in its orbit, Jupiter's immense gravity causes "tides" in the solid surface that rise 300 feet high on Io, generating enough heat for volcanic activity and to drive off any water.

Europa's surface is mostly water ice, and there is evidence that it may be covering an ocean of water or slushy ice beneath. Europa is thought to have twice as much water as does Earth. This moon intrigues astrobiologists because of its potential for having a "habitable zone." Life forms have been found thriving near subterranean volcanoes on Earth and in other extreme locations that may be analogues to what may exist on Europa.

Ganymede is the largest moon in the solar system (larger than the planet Mercury), and is the only moon known to have its own internally generated magnetic field.

Finally, Callisto's surface is extremely heavily cratered and ancient -- a visible record of events from the early history of the solar system. However, the very few small craters on Callisto indicate a small degree of current surface activity.

Saturn has four "satelites" or moons that are large enough to pass in front of the sun, causing a solar eclipse. These are named Janus, Mimas, Enceladus, Tethys, Rhea, Dione and Titan. Saturn does have other moons, but they are not large enough to block the sun's light during transit.

Eclipses on Saturn are different from earth because they can be caused by many different moons, rather than just the one moon that the earth has rotating around it. There can also be more than one solar eclipse happening on the planet at one time. This happens when more than one moon passes between Saturn and the sun. The Hubble Space Telescope has captured images of a quadruple moon transit over Saturn.

Solar eclipses are more rare on Saturn than they are on the planet Jupiter because of Saturn's moderate axial tilt.

On the red planet Mars, only partial solar eclipses can happen. The reason for this is that both of its moons (Phobos and Deimos) are too small and therefore not able to cover the Sun's disc and would therefore cause no measurable decrease of brightness. This distinguishes the eclipses on Mars from those happening on Earth. Eclipses that happen because of the two moons of Mars are called transit. When a transit of Phobos happens, the moon passed directly between the Sun and a certain point on the surface of Mars and it can be seen from Mars as a large dark plate moving very fast across the face of the sun. This transit only last around thirty seconds. Deimos however is very small and too far away from Mars to make an eclipse happen. One could only make out a small spot crossing the Sun's disc. However, lunar eclipses are very common. They come in hundreds every Earth year. A special situation can occur where Deimos will be eclipsed by Phobos. Eclipses on Mars can be photographed from the surface of the planet and from orbit.

As already stated, Mars has only two moons, Deimos and Phobos. 'Deimos' is the smaller one and is further away from Mars. The name Deimos comes from Greek mythology and the eponym impersonated 'terror'. Phobos, which means 'dread', is the bigger one and the name derivates from Greek mythology in which Phobos ('Phobus') is a companion to Ares (the Greek term for Mars). Phobos was also the twin brother to Deimos.

The planet Tath would experience all types of solar and lunar eclipses, the same as we experience here on Earth. Tath has two natural satellites: Riquind and Likasdr. In the case of this planet, Likasdr is too small to have total eclipse at any point in its cycle. However, it does transit across the surface of its blue dwarf star, Tilcarn, and Tath, appearing as a small speck moving across the celestial faces. This also occurs when Riquind passes in front of the secondary Satellite Liukasdr.

Likasdr is much closer to the planet’s surface than the larger satellite, Riquind. The smaller satellite rotates around Tath 4 times a day, yet will rarely cast a discernible shadow on the planet’s surface due to the speed of its movement and its relatively small size. Riquind on the other hand casts a sizeable shadow across the surface of the planet, and is responsible for all the tidal waves and gravitational flux on Tath.

Syzygy only rarely occurs with these celestial bodies due to the eccentricity of the smaller satellite, Likasdr’s, orbit. However, when the planets do experience syzygy, they do cause total eclipses. When a total eclipse occurs it lasts for 6.5 minutes, whereas annular eclipses can last for up to 12 minutes, depending on the alignment of all four celestial bodies.

-- Based on a factious planet and its two satellites and blue dwarf star. This system is also based in scientific fact, utilizing astrophysical planetary science to build this celestial system. --

Neptune has 14 moons named Triton, Nereid, Naiad, Thalassa, Despina, Galatea, Larissa, Proteus, Halimede, Psamathe, Sao, Laomedeia, Neso, and S/2004 N 1, however not all could cause a Solar Eclipse on the planet. Triton is the only spherical moon of Neptune — the planet's other 13 moons are irregularly shaped. Here are the angular diameters of the moons that are large enough to fully eclipse the sun: Naiad, 7–13'; Thalassa, 8–14'; Despina, 14–22'; Galatea, 13–18'; Larissa, 10–14'; Proteus, 13–16'; Triton, 26–28'. All other satellites of Neptune are too small and/or too distant to produce an umbra.

Just because the moons are large enough to fully eclipse the Sun does not necessarily mean that they will do so. Eclipses of the Sun from Neptune are very rare due to the planet's long orbital period and large axial tilt of 28 degrees. Triton is the largest moon of Neptune but has an orbital inclination of about 25 degrees to Neptune's equator, this makes eclipses of the Sun by Triton very rare. Even when such an eclipse does occur, it passes rather quickly, as Triton moves in the opposite direction of Neptune's spin.

Total solar eclipses on Earth are also rare events. Although they occur somewhere on Earth every 18 months on average which is more frequent than in Neptune despite the large amount of moons it possesses.

Plutonius is a planet in the furthest most area of the solar system. It has two moons called Mikius and Draykus. The second moon means that Plutonius will experience more eclipses than the Earth in a respective year, although those two moons take longer to orbit the plant than the Earth's moon, so the eclipses are not as frequent in 'earth days'. The two moons are not on the same orbit as each other, so there's the potential for both to align for a double moon solar eclipse, where they would both block out the sun one after the other. This has never been a documented occurance though and I would estimate it as being a once-in-a-million-years event.

Niamh added her name and school to her parchment then handed it in. It wasn't her best essay ever, but for a subject she hadn't really studied, she hoped it would be sufficient.

The last time this occurred was in 2006. The Satellite Ariel crossed Uranus. It’s shadow creates a region of totality about the same size as the moon itself—a very different situation from what we see during an eclipse on Earth, where the area of total eclipse is fairly small, and surrounded by a much larger region of partial eclipse. This is due to the fact that at Uranus, Ariel is roughly ten times bigger in the sky than the distant Sun. The next eclipse will not occur on Uranus till the year 2049**

(http://gizmodo.com/four-breathtaking-solar-eclipses-you-can-see-from-other-1796642411)

Eclipses on Pluto have been documented in the past however there are eclipse-free and eclipse-active periods. During active periods (the next one is going to start around 2103 and will end in 2117) eclipses can be seen daily on Pluto and last up to 90 minutes.

Most total eclipses are caused by Pluto's largest moon Charon, but Nix and Hydra are known to be able to cause total eclipses as well. Eclipses by Kerberos and Styx however aren't that easy to estimate as both moons are rather small and have a very irregular shape and structure. What we know is that total eclipses causded by these two moons are extremely rare due to the moons' shape and small size. Hybrid and partial eclipses however are possible.

Cupidus is the only known moon of Aphroditus. Its orbit allows for a total lunar eclipse every seven Earth years which lasts for seven Earth hours. Total solar eclipses last seven Earth minutes and occur every seven Earth months. Earth's eclipses are much more varied than those of Aphroditus'. Aphroditus' also cause turquoise rain to fall from clouds that form in the atmosphere during both solar and lunar eclipses.

Neptune is the eighth planet in the lineup spanning its way from the sun. Though it wasn't officially discovered by muggles until the 1600's, wizards knew of Neptune from the early ages of mankind. Whether the names given to this planet and its moons were chosen by wizards or muggles is unknown but the theme the names speak of is well thought to have had a magical birth. Neptune itself was named for the Roman god of the sea, and its moons for lesser sea gods and nymphs. Naturally, many wizards throughout history have made claims to having started up these mythical stories. With the resemblance of magic born by the powers of the gods this is very likely, though there is no way of knowing just who was the first to tell a 'godlike' tale and what their intent might have been. One way or another, Neptune was given its lofty name and its moons were graced with monikers of lesser - but still great - mythical importance.

The largest of the moons belonging to Neptune is Triton, named after the son of the god Poseidon, who is the Greek counterpart to Neptune. Triton is unique in that it orbits in the opposite direction of its planet's rotation. This direction of orbit causes the passing of the moon as viewed from the planet to be quite fast. Being one of the seven moons capable of causing an eclipse on Neptune, this speed of passing is something worthy of note. When Triton comes between Neptune and the sun, and in proper alignment to cause an eclipse, the effect is short-lived. The orbit of the moon in conjunction with the rotation of the planet bring the sun into view again in a very short amount of time. This is rather different than the effect we might witness on Earth, where an eclipse is substantially longer.

The six moons that are closes to Neptune are Naiad, Thalassa, Despina, Galatea, Larissa and the oddly-named S/2004 N 1. These moons, though smaller than Triton, are capable of creating an eclipse. Since these moons orbit in the same direction as the planetary rotation, the eclipses caused by them are not so suddenly ended but are still quite short due to the great distance between Neptune and the sun. One variation that they have from the eclipses on Earth, and that they share with those caused by Triton, is that the change in light is not terribly drastic. The light on Neptune is very dim in comparison with the light on Earth and therefore and eclipse is not as easily noticed.

Neptune has seven other moons, Proteus, Nereid, Halimede, Sao, Laomedeia, Neso and Psmathe, which are incapable of causing an eclipse. Although half of Neptune's fourteen moons are able to shield the light of the sun, eclipses are rather rare. Since they are also short-lived, the planet spends the majority of its time in the full, albeit dim, light of the sun.

Saturn actually has 61 moons, 53 of which are named. They are: [spoiler=Saturn's moons] Pan Daphnis Atlas Prometheus Pandora Epimetheus Janus Aegaeon Mimas Methone Anthe Pallene Enceladus Tethys Telesto Calypso Dione Helene Polydeuces Rhea Titan Hyperion Iapetus Kiviuq Ijiraq Phoebe Paaliaq Skathi Albiorix S/2007 S 2 Bebhionn Erriapo Skoll Siarnaq Tarqeq S/2004 S 13 Greip Hyrrokkin Jarnsaxa Tarvos Mundilfari S/2006 S 1 S/2004 S 17 Bergelmir Narvi Suttungr Hati S/2004 S 12 Farbauti Thrymr Aegir S/2007 S 3 Bestla S/2004 S 7 S/2006 S 3 Fenrir Surtur Kari Ymir Loge Fornjot

Eclipses occur when a planet has a moon. But eclipses vary in what type they are and how long they last, usually depending on the size of the moon and where the sun appears in the sky of a certain planet. Although some people no longer consider Pluto a planet, it is a fact that it has eclipses. However, because Pluto is not only further from the sun, but also smaller than Earth, these eclipses are different from the ones we see here. The sun looks like any other star from Pluto, but Pluto’s large moon, Charon, appears from the surface of Pluto nearly four times as large as Earth’s moon appears from Earth’s surface. A solar eclipse on Pluto would be more like the moon covering a star would be on Earth. There is no edge of sunlight around the moon. Instead Charon blocks out the sun completely.

Every 120 years, the planet and Charon take turns eclipsing each other. This occurs once each plutonian day which is about every 6.4 Earth days. So you would see an eclipse for years, every six days, twice during Pluto’s orbit of 248 year around the sun. Only one side of Pluto and Charon face to each other; therefore a solar eclipse only happens on half of the planet. If you are looking for a solar eclipse on Pluto, you’d better hope you live on the correct side!