Geography, asked by anshighamelrose12, 4 days ago

long note on solar system. include pictures. write short note on the planet on solar system. longest answer will be marked as brainliest. ​

Answers

Answered by choudhuryshyamoli12
1

The Solar System[b] is the gravitationally bound system of the Sun and the objects that orbit it, either directly or indirectly.[c] Of the objects that orbit the Sun directly, the largest are the eight planets,[d] with the remainder being smaller objects, the dwarf planets and small Solar System bodies. Of the objects that orbit the Sun indirectly—the natural satellites—two are larger than the smallest planet, Mercury.[e]

Solar System

A representative image of the Solar System with sizes, but not distances, to scale

The Sun and planets

(distances not to scale)

Age

4.568 billion years

Location

Local Interstellar Cloud, Local Bubble, Orion–Cygnus Arm, Milky Way

System mass

1.0014 Solar masses

Nearest star

Proxima Centauri (4.25 ly)

Alpha Centauri (4.37 ly)

Nearest known planetary system

Proxima Centauri system (4.25 ly)

Planetary system

Semi-major axis of outer known planet (Neptune)

30.10 AU

(4.5 bill. km; 2.8 bill. mi)

Distance to Kuiper cliff

50 AU

Populations

Stars

1 (Sun)

Known planets

8 (MercuryVenusEarthMarsJupiterSaturnUranusNeptune)

Known dwarf planets

2 universally accepted

(PlutoEris)

1 more likely to be

(Ceres)

2 more possible to be

(HaumeaMakemake)

Known natural satellites

575 (185 planetary390 minor planetary)[1][2]

Known minor planets

796,354[a][3]

Known comets

4,143[a][3]

Identified rounded satellites

19 (5–6 likely in hydrostatic equilibrium)

Orbit about Galactic Center

Invariable-to-galactic plane inclination

60.19° (ecliptic)

Distance to Galactic Center

27,000 ± 1,000 ly

Orbital speed

220 km/s; 136 mps

Orbital period

225–250 myr

Star-related properties

Spectral type

G2V

Frost line

≈5 AU[4]

Distance to heliopause

≈120 AU

Hill sphere radius

≈1–3 ly

The Solar System formed 4.6 billion years ago from the gravitational collapse of a giant interstellar molecular cloud. The vast majority of the system's mass is in the Sun, with the majority of the remaining mass contained in Jupiter. The four smaller inner system planets, Mercury, Venus, Earth and Mars, are terrestrial planets, being primarily composed of rock and metal. The four outer system planets are giant planets, being substantially more massive than the terrestrials. The two largest planets, Jupiter and Saturn, are gas giants, being composed mainly of hydrogen and helium; the two outermost planets, Uranus and Neptune, are ice giants, being composed mostly of substances with relatively high melting points compared with hydrogen and helium, called volatiles, such as water, ammonia and methane. All eight planets have almost circular orbits that lie within a nearly flat disc called the ecliptic.

The Solar System also contains smaller objects.[f] The asteroid belt, which lies between the orbits of Mars and Jupiter, mostly contains objects composed, like the terrestrial planets, of rock and metal. Beyond Neptune's orbit lie the Kuiper belt and anything more.??

Answered by zeba8975
1

The Solar System is the Sun and all the objects that orbit around it. The Sun is orbited by planets, asteroids, comets and other things.

Planets and dwarf planets of the Solar System. Compared with each other, the sizes are correct, but the distances are not

File:Solar System explained by simpleshow foundation.webmPlay media

A simple video explanation of the Solar System

The Solar System is about 4.6 billion years old.[1] It formed by gravity in a large molecular cloud. Most of this matter came together in the center, and the rest flattened into an orbiting disk that became the Solar System. It is thought that almost all stars form by this process.

The Sun is a star. It makes up 99.9% of the Solar System's mass.[2] This means that it has strong gravity. The other objects are pulled into orbit around the Sun. The Sun is mostly made out of hydrogen, and some helium and higher elements.

There are eight planets in the Solar System. From closest to farthest from the Sun, they are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. The first four planets are called terrestrial planets. They are mostly made of rock and metal, and they are mostly solid. The last four planets are called gas giants. This is because they are much larger than other planets and are mostly made of gas.

Titan one of Saturn’s moons is the only moon in the solar system to have an Atmosphere.

The Solar System also contains other things. There are asteroid belts, mostly between Mars and Jupiter. Further out than Neptune, there is the Kuiper belt and the scattered disc. These areas have dwarf planets, including Pluto, Makemake, Haumea, Ceres and Eris. There are thousands of very small objects in these areas. There are also comets, centaurs, and interplanetary dust.

In Ancient Greece, Aristarchus of Samos proposed the heliocentric model of the Solar System, where the Sun, is at the center of the known universe. He is sometimes known as the "Greek Copernicus".[3]

Six of the planets and three of the dwarf planets are orbited by moons. There are about 200 moons in the Solar System. Mercury and Venus have no moons, and Jupiter and Saturn have the largest number of moons. The largest moon is Ganymede which is a moon of Jupiter.

Furthermore, planetary dust orbits the gas giants. Many other systems like the Solar System have been found. Each of the billions of stars in the Milky Way galaxy might have a planetary system.

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