Solar system or solar system you must have heard it right. But the series of questions interested the concept, how many Solar Systems are in the galaxy? How many planets are there in the Solar System? What are the different characteristics of the different planets? Then follow along with the article khổng lồ answer your questions!
Solar system in the Milky Way with the Sun & other planets
What is Solar System Discovery? How many Solar Systems are there in the galaxy?
the Solar System is a planet with the Sun at the center & the celestial bodies within the gravitational pull of the solar system. They all formed from the collapse of a giant molecular cloud about 4.6 billion years ago.
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Answer the question about how many solar systems in the galaxy, there is only 1 solar system. Most of the celestial bodies will orbit the Sun & the mass is concentrated mainly on planets with nearly circular elliptical orbits và orbital planes.
the Solar System also contains two regions of concentration of smaller objects. With the gravity of the main planets and dwarf planets, and thousands of small objects lying between & moving freely between these two regions, with variable sizes such as comets, planetary dust, centaurs…
In addition, the Solar System has several comets, including a solid bộ vi xử lý core of dust & ice with steam tails extending millions of kilometers around the sun in a very flattened elliptical orbit.
How did the solar system form?
the formation và evolution of the solar system began about 4.6 billion years ago with the gravitational collapse of a small part of the giant molecular cloud. At this point, most of the collapsed mass accumulates in the center, forming the sun, while the rest flattens out to khung a protoplanetary dust cloud disk that gradually evolves into planets, the sun moons, asteroids & other small celestial bodies in the solar system.
How old is our solar system?
How old is the current solar system is the interest & curiosity of many people. Meteorites, or pieces of space rock that fell lớn Earth, have helped scientists figure out the age of the solar system.
Not to mention the Allende meteorite, which fell to Earth in 1969 and scattered over Mexico, is the oldest known meteorite dating back lớn 4.55 billion years old.
therefore how many planets does the Solar System have?
the Solar System has 8 planets và dwarf planets
the answer to the question of how many planets the Solar System consists of is the Sun và 9 planets orbiting in nearly circular elliptical orbits. The inner ring has 4 solid planets such as Venus, Mercury, Earth, Mars, the outer ring has 5 gaseous planets: Jupiter, Saturn, Uranus, Neptune và the new 9th planet. Appeared in early 2016.
Since 1930, when Pluto was discovered, everyone will have heard about the 9 planets in our solar system. But in the 1990s astronomers debated whether Pluto was a planet. The controversial 2006 decision by the International Astronomical Union to điện thoại tư vấn Pluto a dwarf planet, removed it from the danh mục of real planets in the solar system. Therefore, there will be 8 solar systems as mentioned above.
Today astronomers are searching for another planet in our solar system for a true planet 9, after finding evidence on January 20, 2016 of a “9th planet” twice as massive. 10 times the mass of Earth and more than 5000 times the mass of Uranus.
the Sun – the central star of the Solar System
the Sun (mother star) with an endless source of light, is considered the center of the Solar System, is the parent star is the brightest star providing light energy for other planets.
On the Sun, there are always nuclear reactions that generate enormous amounts of heat và radiate throughout the planets. The parent star generates its own energy & creates a gravitational force that causes other planets to orbit in different orbits.
Characteristics of the planets in the Solar System
To create a solar system, there must be other asteroids & satellites around, each planet has its own characteristics. Below will be detailed information about the stars in the Solar System.
1. Mercury
Mercury, also known as Mercury, English name is Mercury, a star only slightly larger than Earth’s Moon, is the planet closest to the Sun, with an orbital period equal to 88 Earth days.
Image of Mercury in the Solar System
Mercury has a radius of 2347.7km, a mass of 3.3022x1023kg, và is oblate spherical. Mercury’s daytime side is heated by the sun, which can reach 840 degrees Fahrenheit (450 degrees Celsius). But at night, the temperature can drop khổng lồ minus hundreds of degrees, below freezing.
There is almost no air on Mercury to lớn absorb meteorite impacts, therefore the surface of the planet looks pitted, with large craters, interested on the moon. Mercury does not have seasonal changes in weather interested other planets.
If viewed from Earth, Mercury has an orbital conjunction period of approximately 116 days và is much faster than the other planets. And Mercury’s tilt axis has the smallest inclination of about 1/30 degrees, but has the largest orbital eccentricity.
2. Venus
This is the 2nd planet in the solar system and has a rotation period of 224.7 Earth days, Venus is bright in the dark sky & is second only to the brightness of the moon. Venus has a radius of 6051.8km và a mass of about 4.868×1024.
Venus is an extremely hot planet, even hotter than Mercury, with a very toxic atmosphere whose pressure on the surface would crush and possibly kill humans.
Venus
the structure and kích cỡ of Venus appear to be similar to those of Earth, with a dense, toxic atmosphere that traps heat in an uncontrolled greenhouse effect. Venus rotates slowly in the opposite direction of most of the other planets. This is really weird isn’t it.
According to lớn research by the Greeks, this planet has 2 different objects – one is the sky in the morning, the other is in the evening & also caused many reports of unidentified flying objects.
3. Earth
the third planet is our Earth, Earth is a water planet, with two thirds of the planet covered by oceans being the only known planet where world exists. Earth’s atmosphere is rich in nitrogen và oxygen to sustain world.
Image of the Earth
the Earth’s surface orbits it at 467 meters per day – around 1,000mph, at the equator, và usually rotates at 29km per second around the Sun. Earth has a diameter of 12,760km, orbit 365.24 days.
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4. Mars
the fourth planet in this solar system is also known as Mars or “Red Planet”, this name is named after the characteristics of the planet because iron oxide is present in abundance on the planet’s surface, making its surface appears in red.
Mars is a rocky và cold planet
This is a rocky and cold planet, the opposite is true, Mars is very cold. Dirt is an iron oxide, with rocky ground & valley cliffs, interested the swirling winds that carry dust – khổng lồ dust storms that engulf the planet.
Dust covers the surface of Mars & is filled with frozen water. If the planet warms up, the water will be flooded with liquid water.
At any given era, the planet’s atmosphere is too thin for liquid water lớn exist on the planet’s surface.
5. Jupiter
This is considered the giant monkey planet in the solar system with extremely large mass, the largest in our solar system. And is the 5th planet from the Sun. đời xe jupiter English name is Jupiter.
Jupiter is the largest planet in the solar system
Jupiter is a gas giant, containing mainly helium và hydrogen gas. The outermost layer of the atmosphere shows up with bands of clouds at different heights, due lớn aerodynamic turbulence, interacting with storms at the planet’s edge. Not only that, đời jupiter has a strong magnetic field, with many moons around, which looks very similar khổng lồ a miniature solar system.
6. Saturn
This is the 6th planet from the Sun, has 3 parts. This is considered the second largest planet in terms of kích thước and mass, after Jupiter. Saturn’s radius is up to lớn 60,268km & the mass is 5,684.6×1026. This planet contains a lot of hydrogen và helium gas, in addition, there are many moons.
Saturn – 6th planet in the Solar System
7. Uranus
Uranus is the 7th planet in the Solar System. Uranus’ color reflects the presence of photochemical hydrocarbon dust high above the methane clouds, which gives the star its cyan color.
It is the third most radial và fourth most massive planet in the Solar System, with a composition similar to Uranus & different from the other two gaseous planets. The atmosphere of this star also contains basic components such as hydrogen & helium gas, but also contains volatile compounds such as water, ammonia, methane along with hydrocarbons.
With the coldest atmosphere among the planets in the Solar System, with a temperature of about -224 degrees Celsius, there is also a ring system, magnetosphere, as well as many natural satellites surrounding it.
Not only that, but Uranus also rotates around its axis with a very large inclination, almost finished with the orbital surface, therefore the North and South poles of this planet almost create an equatorial position.
Uranus has a ring system, magnetosphere và many other moons
8. Neptune
Neptune is the 8th planet furthest from the Sun, has the strongest winds, sometimes even faster than the speed of sound reaching 1,500mph. This planet is 30 times farther than Earth from the sun & very cold.
This is the first planet found by theoretical calculations. Astronomer Alexis Bouvard, based on the perturbation of the orbit of Uranus, concluded that its orbit is perturbed due khổng lồ gravitational interactions with another planet.
This planet has a basic composition of hydrogen, helium and a few hydrocarbons & includes nitrogen. Also contains ice molecules such as methane, ammonia, water.
Neptune & Uranus are the 2 largest ice planets in the solar system. Due lớn the distance from the sun, the amount of heat absorbed is less than other planets.
Neptune aka Neptune
In addition, the Solar System has other newly discovered asteroids, currently there are 5 dwarf planets: Ceres, Haumea, Pluto, Makemake, Eris.
the largest planet in the solar system
Jupiter is considered the king of the planets, because it is named after dòng xe yamaha jupiter (king of the gods) & it is also the largest planet in the solar system.
Above are discoveries about the solar system, answers about Ho Sun, characteristics of the planets… expect that you will be able lớn understand & know more knowledge about the sky, the universe. VIETCHEM will continuously update and provide you with new interesting nội dung for you in the near future.
