A planet in the solar system that has more moons. Artificial satellites of the Earth: All about satellites

Natural satellites are relatively small cosmic bodies that revolve around larger "host" planets. In part, a whole science is devoted to them - planetology.

In the 70s, astronomers assumed that Mercury had several celestial bodies dependent on it, as they caught around ultraviolet radiation. Later it turned out that the light belonged to a distant star.

Modern equipment makes it possible to study the planet closest to the Sun in more detail. Today, all planetary scientists unanimously repeat that it has no satellites.

Moons of the planet Venus

Venus is called similar to the Earth, since they have the same compositions. But if we talk about natural space objects, then the planet named after the goddess of love is close to Mercury. These two planets of the solar system are unique in that they are completely alone.

Astrologers believe that Venus could have previously observed such, but to date, not a single one has been found.

How many natural satellites does the earth have?

Our native Earth has many satellites, but only one natural one, which every person knows from infancy, is the Moon.

The size of the Moon exceeds a quarter of the diameter of the Earth and is 3475 km. It is the only celestial body with such large dimensions relative to the "owner".

Surprisingly, its mass is small at the same time - 7.35 × 10²²² kg, which indicates a low density. Multiple craters on the surface are visible from Earth even without any special devices.

What are the moons of Mars?

Mars is a rather small planet, which is sometimes called red because of its scarlet hue. It is given by iron oxide, which is part of it. Today, Mars boasts two natural celestial objects.

Both moons, Deimos and Phobos, were discovered by Asaph Hall in 1877. They are the smallest and darkest objects in our comic system.

Deimos translates as ancient greek god spreading panic and terror. Based on observations, it is gradually moving away from Mars. Phobos, named after the god who brings fear and chaos, is the only satellite that is so close to the "owner" (at a distance of 6000 km).

The surfaces of Phobos and Deimos are abundantly covered with craters, dust and various loose rocks.

Moons of Jupiter

To date, the giant Jupiter has 67 satellites - more than any other planet. The largest of them are considered the achievement of Galileo Galilei, since they were discovered by him in 1610.

Among the celestial bodies orbiting Jupiter, it is worth noting:

• Adrastea, with a diameter of 250 × 147 × 129 km and a mass of ~3.7 × 1016 kg;
• Metis - dimensions 60 × 40 × 35 km, weight ~ 2 1015 kg;
• Thebe, which has a scale of 116×99×85 and a mass of ~4.4×1017 kg;
• Amalteyu - 250 × 148 × 127 km, 2 1018 kg;
• Io with a weight of 9 1022 kg at 3660×3639×3630 km;
• Ganymede, which, with a mass of 1.5 1023 kg, had a diameter of 5263 km;
• Europe, occupying 3120 km and weighing 5 1022 kg;
• Callisto, with a diameter of 4820 km having a mass of 1 1023 kg.

The first satellites were discovered in 1610, some from the 70s to the 90s, then in 2000, 2002, 2003. The last of them were discovered in 2012.

Saturn and its moons

Found 62 satellites, of which 53 have names. Most of them are composed of ice and rock, with a reflective feature.

The largest space objects of Saturn:

How many moons does Uranus have?

On the this moment Uranus has 27 natural celestial bodies. They are named after characters from famous works written by Alexander Pope and William Shakespeare.

Names and list by quantity with description:

Moons of Neptune

The planet, whose name is consonant with the name of the great god of the seas, was discovered in 1846. She was the first to be found through mathematical calculations, and not through observation. Gradually, new satellites were discovered in her, until 14 were counted.

List

Neptune's moons are named after nymphs and various sea deities from Greek mythology.

The beautiful Nereid was discovered in 1949 by Gerard Kuiper. Proteus is a non-spherical cosmic body and is studied in detail by planetary scientists.

Giant Triton is the iciest object in the solar system with a temperature of -240°C, and also the only satellite that rotates around itself in the opposite direction to the rotation of the "master".

Almost all satellites of Neptune have craters on the surface, volcanoes - both fiery and ice. They spew mixtures of methane, dust, liquid nitrogen and other substances from their depths. Therefore, a person will not be able to be on them without special protection.

What are the "satellites of the planets" and how many of them are there in the solar system?

Satellites are cosmic bodies that are smaller in size than the "host" planets and orbit the latter. The question of the origin of satellites is still open and is one of the key questions in modern planetary science.

To date, 179 natural space objects are known, which are distributed as follows:

• Venus and Mercury - 0;
• Earth - 1;
• Mars - 2;
• Pluto - 5;
• Neptune - 14;
• Uranus - 27;
• Saturn - 63;
• Jupiter - 67.

Technologies are improving every year, finding more celestial bodies. It is possible that new satellites will be discovered soon. We can only wait, constantly checking the news.

The largest satellite in the solar system

The largest moon in our solar system is Ganymede, a moon of the giant Jupiter. Its diameter, according to scientists, is 5263 km. The next largest is Titan with a size of 5150 km - the "moon" of Saturn. Closes the top three Callisto - Ganymede's "neighbor", with whom they share one "owner". Its scale is 4800 km.

Why do planets need satellites?

Planetologists at all times asked themselves the question "Why do we need satellites?" or “What effect do they have on the planets?” Based on observations and calculations, some conclusions can be drawn.

Natural satellites play an important role for the hosts. They create a certain climate on the planet. No less important is the fact that they serve as protection against asteroids, comets, and other dangerous celestial bodies.

Despite such a significant impact, satellites are still not mandatory for the planet. Even without their presence, life can be formed and maintained on it. This conclusion was made by American scientist Jack Lissauer from the NASA Science Space Center.

Some of these moons still remain a mystery to astronomers, because man has not yet set foot everywhere, but somewhere the existence of living organisms is quite possible! But what we know for sure is at least their size. In this list, you will get to know the 10 largest planetary satellites in our solar system.

10. Oberon, satellite of Uranus (average diameter - 1523 kilometers)

Oberon, also known as Uranus IV, is the most distant satellite from the center of Uranus, the second largest among other satellites of this planet and the ninth largest among all known satellites of our planet. solar system. Discovered in 1787 by explorer William Herschel, Oberon is named after the mythical king of elves and fairies mentioned in Shakespeare's A Midsummer Night's Dream. Oberon's orbit lies partly outside the magnetosphere of Uranus.

9. Rhea, satellite of Saturn (average diameter - 1529 kilometers)

Rhea is the second largest moon of Saturn and the ninth largest satellite in the entire solar system. At the same time, it is the second smallest cosmic body in our solar system, second only to the asteroid and dwarf planet Ceres in this ranking. Rhea received this status for confirmed data that she has hydrostatic balance. Discovered in 1672 by Giovanni Cassini.

8. Titania, satellite of Uranus (average diameter - 1578 kilometers)

it largest moon Uranus and the eighth largest in the solar system. Discovered in 1787 by William Herschel, Titania was named after the fairy goddess in Shakespeare's A Midsummer Night's Dream. Titania's orbit does not go beyond the magnetosphere of Uranus.

7. Triton, satellite of Neptune (average diameter - 2707 kilometers)

Triton is the largest moon of the planet Neptune, discovered on October 10, 1846 by the English astronomer William Lassell. It is the only large moon with a retrograde orbit in our solar system. Triton moves in the opposite direction to the rotation of its planet. At 2,707 kilometers in diameter, Triton is considered the seventh largest moon in the solar system. There was a time when Triton was considered a dwarf planet from the Kuiper asteroid belt due to properties similar to Pluto - retrograde and composition.

6. Europa, satellite of Jupiter (average diameter - 3122 kilometers)

It is the smallest of the Galilean moons orbiting Jupiter and the sixth closest to its planet. It is also the sixth largest satellite in the solar system. Galileo Galilei discovered Europa in 1610 and named this celestial body in honor of the legendary mother of the Cretan King Minos and mistress of Zeus.

5. Moon, satellite of the Earth (average diameter - 3475 kilometers)

Our Moon is believed to have formed 4.5 billion years ago shortly after the formation of the Earth itself. There are several hypotheses about its origin. The most common among them says that the Moon was formed from fragments after the collision of the Earth with the cosmic body Thei, comparable in size to Mars.

4. Io, satellite of Jupiter (average diameter - 3643 kilometers)

Io is the most geologically active celestial object in our solar system, and has earned this title for at least 400 active volcanoes. The reason for this extreme activity is the heating of the interior of the satellite due to tidal friction caused by the gravitational influence of Jupiter and other Galilean satellites (Europa, Ganymede and Callisto).

3. Callisto, satellite of Jupiter (average diameter - 4821 kilometers)

Galileo Galilei discovered Callisto, like some of Jupiter's other moons, in 1610. With impressive dimensions, this satellite is 99% of the diameter of Mercury, but only a third of its mass. Callisto is the fourth Galilean satellite of Jupiter in terms of distance from the center of the planet, with an orbital radius of 1,883,000 kilometers.

2. Titan, satellite of Saturn (average diameter - 5150 kilometers)

It is the sixth ellipsoidal satellite of Saturn. Very often it is called a planet-like satellite, because the diameter of Titan is 50% larger than the diameter of our moon. In addition, it is 80% heavier than the satellite of our Earth.

1. Ganymede, satellite of Jupiter (average diameter - 5262 kilometers)

Ganymede is equally composed of silicate rocks and frozen water. It is a fully differentiated celestial body, rich in iron, with a liquid core and an outer ocean that may contain more water than over the entire Earth in the sum of all its oceans. The surface of Ganymede is distinguished by two types of relief. The dark regions of the satellite are saturated with craters from asteroid impacts, which occurred presumably 4 billion years ago. This landform covers about a third of the satellite.

To the question Which planet has the most satellites in the solar system? given by the author Lissa the best answer is Maybe I'm wrong, but at the moment the planet Earth has the most satellites. Only these satellites are artificial (and there weren’t any in the question). There are several hundred of them.

Answer from Igor ermolin[newbie]
Correct answer SATURN

Answer from Wake up[newbie]
huh exactly?

Answer from Eurovision[newbie]
Jupiter has Mercury-0 Venus-0 Earth-1 Mars-2 Jupiter-63 Saturn-60 Uranus-27 Neptune-13 The planet Jupiter has 63 satellites. Whereas the planet Earth has only one satellite - the Moon. 63 moons of Jupiter the largest number satellites discovered to date from all the planets of the solar system. In addition to the largest number of satellites, Jupiter also has a system of rings.

Answer from Ўla[guru]
At Jupiter.

Answer from User deleted[active]
Saturn

Answer from Marina[expert]
Jupiter

Answer from User deleted[expert]
There is a table here Planet Distance from the Sun Orbital period Rotation period Diameter, km Mass, kg Number of satellites Density g/cm
3
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planetary satellites
Mercury and Venus have no moons. The rest of the planets, with the exception of the Earth, have satellites immeasurably smaller than their planets. The Earth has only one natural satellite - the Moon, but unusually large in comparison with itself. Moon smaller than Earth only 4 times in diameter. Most satellites - 12 - have the largest planet - Jupiter. The next largest planet, Saturn, has 10 of them, and the last one was discovered only in 1966. Uranus has 5 satellites, Neptune and Mars have 2 each. The largest of the satellites: Titan (Saturn's satellite) and Ganymede (Jupiter's third satellite). They are 1.5 times larger than the Moon in diameter and slightly larger than Mercury. Titan is the only moon to have an atmosphere (composed of methane).
All satellites for which it was possible to establish rotation, including the Moon, are always turned to their planet by the same side. Therefore, their sidereal periods of rotation are equal to the periods of their revolution around their planets. As a result, no planet can see reverse side her companions. With respect to the Sun, the period of rotation of the satellites around the axis is longer than with respect to the stars, since during the time of the satellite's revolution, the planet along with it will pass some more arc along its circumsolar orbit.
A sidereal or sidereal month is the period of the Moon's revolution around the Earth relative to the stars; The synodic month is the period of the Moon's revolution around the Earth relative to the Sun. The synodic month is the interval of time between the same phases of the moon. The sidereal month is 27.3 days, and the synodic month is 29.5 days.
The closest point to the Earth in an elliptical lunar orbit is called perigee, and the most distant point is called apogee.
The moon is visible to us as a narrow crescent, the rest of its disk is also slightly glowing. This phenomenon is called ashy light and is explained by the fact that the Earth illuminates the night side of the Moon with reflected sunlight.
It is easy to understand that the phases of the Earth and the Moon are mutually opposite. When the Moon is almost full, the Earth is visible from the Moon as a narrow crescent.
Returning to the satellites of the planets, we note that the four largest satellites of Jupiter can sometimes be seen even with prism binoculars. In a telescope, in a few hours, you can follow how the satellites noticeably move, sometimes pass between Jupiter and the Earth, and sometimes go behind the body of Jupiter or into its shadow, into an eclipse. Observing these eclipses of satellites, Roemer in the 17th century. discovered that the speed of propagation of light is finite, and established its value.
Many of the satellites of the planets are interesting for their movement. The moons of Mars are very small. The largest of them is Phobos. It has a diameter of 16 km and is located from the surface of Mars at a distance less than the diameter of the planet. Phobos revolves around Mars three times faster than the planet itself rotates around its axis. Therefore, it rises in the west twice a day and twice completely changes all phases, sweeping across the sky.
The distant moons of Jupiter and Saturn are very small, and some of them turn in the opposite direction of the rotation of the planet itself.
All 5 satellites of Uranus revolve in the opposite direction, and the planes of their orbits, like the equator of the planet, are almost perpendicular to the plane of the orbit of Uranus.

Satellites are small bodies that revolve around planets. In the solar system, two planets (Mercury and Venus) have no satellites, the Earth has one, Mars has two. A large number of satellites are attracted by the magnetic field of Neptune (13 satellites), Uranus (27 satellites), Saturn (60 satellites). But Jupiter has the largest number of satellites. There are 63 of them! Now you know which planet has more satellites in the solar system.

In addition to such a huge number of satellites, Jupiter also has a system of rings. The first 4 satellites of Jupiter, the largest, were discovered at the beginning of the 17th century by Galileo. He gave them the names Europa, Ganymede, Io, Callisto (names of mythical heroes). With the development of telescopic technology, other satellites began to be discovered; in the 70s of the last century, 13 of them were already discovered. At the beginning of the third millennium, 47 more satellites of Jupiter were discovered. They are quite small, their radius reaches 4 km. Who knows how many more satellites of the planets will be discovered over time, when the scientific and technological progress of mankind ...

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Which planet has the most satellites?

Most a large number of Jupiter has 63 satellites among the planets of the solar system. In addition to them, this planet also boasts a system of rings. The first 4 satellites were discovered back in the Middle Ages in the 17th century with the help of a telescope, and the last (most of them) - at the end of the 20th century already with the help of spacecraft. The sizes of most of them are not too large - only from 2 to 4 kilometers in diameter. Saturn has a little less satellites - 60. But one of its satellites, Titan, is the second largest in the solar system and has a diameter of 5100 km.

The third largest satellite is Uranus. He has 27 of them. And such planets as Venus and Mercury do not have satellites at all. 5-11-2010

Have you read the answer to the question Which planet has the most satellites? and if you liked the material, then bookmark it - “Which planet has the most satellites ?? . What is the best car to work in a taxi? It's controversial...

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At Jupiter...

Mercury has no satellites.

Venus doesn't have moons either.

The Earth has one satellite: the Moon
The Moon is the only natural satellite of the Earth. It is the second brightest object in the earth's sky after the Sun and the fifth largest natural satellite in the solar system. Also, it is the first (and in 2009 the only) extraterrestrial object of natural origin visited by a person. The average distance between the centers of the Earth and the Moon is 384,467 km.

The planet Mars has two satellites: Phobos (Greek - fear) and Deimos (Greek - horror).
Both satellites rotate around their axes with the same period as around Mars, therefore they are always turned to the planet by the same side. The tidal influence of Mars gradually slows down the movement of Phobos, and eventually will lead to the fall of the satellite on Mars. On the contrary, Deimos is moving away from Mars.

Jupiter has 63 moons
Jupiter's moons are natural satellites of the planet Jupiter. To date, scientists have known 63...

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The central star of our system, in different orbits around which all the planets pass, is called the Sun. Its age is about 5 billion years. This is a yellow dwarf, so the size of the star is small. Its thermonuclear reactions are consumed not very quickly. The solar system has reached approximately the middle of its life cycle. After 5 billion years, the balance of gravitational forces will be disturbed, the star will increase in size, gradually heat up. Fusion converts all of the Sun's hydrogen into helium. By this time, the size of the star will be three times larger. Ultimately, the star will cool down, decrease. Today the Sun is made up almost entirely of hydrogen (90%) and some helium (10%).

Today, the satellites of the Sun are 8 planets, around which other celestial bodies, several dozen comets, as well as great amount asteroids. All these objects move in their orbit. If you add up the mass of all the satellites of the Sun, it turns out that they are 1000 times lighter than their star ....

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