short notes on eight planets
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The system consisting of Sun and other objects(planets, moons, asteroids and comets etc) rotating around sun because of it's gravitational pull is called as "Solar System".
▲Sun and it's Planets:
Sun and it's Planets are shown in below picture. The sizes of the objects in below picture are relatively correct but distances of planets from Sun are not correct.
NameDistance
from SunMean RadiusNatural
Satellites#1Sun
(Star)0 AU*695,700 kmN/A**2Mercury
(Planet)0.4 AU2,439.7 km03Venus
(Planet)0.7 AU6,051.8 km04Earth
(Planet)1 AU6,371.0 km15Mars
(Planet)1.5 AU3,389.5 km26Jupiter
(Planet)5.2 AU69,911 km677Saturn
(Planet)9.5 AU58,232 km628Uranus
(Planet)19.2 AU25,362 km279Neptune
(Planet)30.1 AU24,622 km14AU* - Astronomical Unit : Distance from Earth to the Sun is counted as 1 AU
N/A** : Not Applicable
The Sun : The Sun is the only star and energy source of solar system. It is largest body of solar system and located at the center of the solar system and all other planets rotates around it. Sun's diameter is about 109 times than that of Earth that means if earth's is considered to be a marble of 1cm diameter the sun will be a massive sphere having diameter larger than a metre. Sun 330,000 times more massive than Earth. Around 75% of the mass of Sum consists of Hydrogen and rest of the mass is of Helium. It also has very smaller quantities of of heavier elements, including oxygen, carbon, neon and iron.
4 Terrestrial Planets orbiting nearer to Sun: The four closer planets to the sun and inside the asteroid belt namely Mercury, Venus, Earth and Mars are Terrestrial in nature. Mainly silicates form their upper layer and heavy metals such as iron and nickel form their core. Except Mercury all other three planets has atmosphere.
Mercury :Mercury is the closest planet to the Sun. It is also the smallest of all 8 planets in the Solar System. It has no atmosphere and Natural Satellites.Venus :Venus is the second planet and slightly smaller in size to the earth. It also has dense atmosphere surrounding it. Venus has no natural satellites.Earth :Earth is the third and very special planet of Solar System because it is the only object in Solar System on which life is found. It is our home planet. It is largest and densest of the inner 4 terrestrial planets. It has one natural satellite 'The Moon'Mars : Mars is the fourth planet from the Sun. It is slightly smaller in size to Earth and Venus. It has atmosphere mainly of Carbon Dioxide. It is red in color because of the large content of iron dioxide in its soil.
2 Gas and 2 Ice Giants in the outer part of Solar System:The outer region of solar system has 2 gas giants namely Jupiter and Saturn and two ice giants Uranus and Neptune. Jupiter and Saturn are called gas giants because they are composed of gases mainly Hydrogen and Helium and they are very large in volume and masses. Jupiter is the largest planet and second largest object only after Sun in the solar system. Uranus and Neptune composed mainly of heavier volatile substances which are referred to as 'ices' and that's why they are called ice giants.
Jupiter :It is the largest planet in our Solar System. Jupiter has 318 times more mass than that of earth. It is so large that it has 2.5 times more mass than all other solar system planets put together. It is composed largely of hydrogen and helium. Jupiter has 67 known satellites. Ganymede, on of the satellites of Jupiter is the largest satellite in the Solar System, is larger than Mercury.Saturn :This is another giant gas planet and second largest planet in the Solar System. It has 95 times the mass of Earth. It is least dense planet in Solar System as it has larger volume but comparatively less mass. Saturn is distinctively known for the ring system it possess. The rings of Saturn are made up of small ice and rock particles. Titan, the largest satellite of Saturn and the second-largest moon in the Solar System, is larger than Mercury and the only satellite in the Solar System with a substantial atmosphere.Uranus : Uranus the planet after Saturn is first ice giant in solar system. It is 14 times massive than earth. Though it is larger in volume than next ice giant Neptune it is lighter than Neptune. It is the coldest planet in the solar system. Uranus has 27 known satellites. Titania is the largest satellite of Uranus.Neptune : This is the 8th planet in solar system and 2nd ice giant after Uranus. It is 17 times massive than earth. Though it is massive than Uranus it is smaller in size and the smallest in outer four giant planets. Neptune has 14 known satellites. Triton is the largest satellite of Neptune.
▲Sun and it's Planets:
Sun and it's Planets are shown in below picture. The sizes of the objects in below picture are relatively correct but distances of planets from Sun are not correct.
NameDistance
from SunMean RadiusNatural
Satellites#1Sun
(Star)0 AU*695,700 kmN/A**2Mercury
(Planet)0.4 AU2,439.7 km03Venus
(Planet)0.7 AU6,051.8 km04Earth
(Planet)1 AU6,371.0 km15Mars
(Planet)1.5 AU3,389.5 km26Jupiter
(Planet)5.2 AU69,911 km677Saturn
(Planet)9.5 AU58,232 km628Uranus
(Planet)19.2 AU25,362 km279Neptune
(Planet)30.1 AU24,622 km14AU* - Astronomical Unit : Distance from Earth to the Sun is counted as 1 AU
N/A** : Not Applicable
The Sun : The Sun is the only star and energy source of solar system. It is largest body of solar system and located at the center of the solar system and all other planets rotates around it. Sun's diameter is about 109 times than that of Earth that means if earth's is considered to be a marble of 1cm diameter the sun will be a massive sphere having diameter larger than a metre. Sun 330,000 times more massive than Earth. Around 75% of the mass of Sum consists of Hydrogen and rest of the mass is of Helium. It also has very smaller quantities of of heavier elements, including oxygen, carbon, neon and iron.
4 Terrestrial Planets orbiting nearer to Sun: The four closer planets to the sun and inside the asteroid belt namely Mercury, Venus, Earth and Mars are Terrestrial in nature. Mainly silicates form their upper layer and heavy metals such as iron and nickel form their core. Except Mercury all other three planets has atmosphere.
Mercury :Mercury is the closest planet to the Sun. It is also the smallest of all 8 planets in the Solar System. It has no atmosphere and Natural Satellites.Venus :Venus is the second planet and slightly smaller in size to the earth. It also has dense atmosphere surrounding it. Venus has no natural satellites.Earth :Earth is the third and very special planet of Solar System because it is the only object in Solar System on which life is found. It is our home planet. It is largest and densest of the inner 4 terrestrial planets. It has one natural satellite 'The Moon'Mars : Mars is the fourth planet from the Sun. It is slightly smaller in size to Earth and Venus. It has atmosphere mainly of Carbon Dioxide. It is red in color because of the large content of iron dioxide in its soil.
2 Gas and 2 Ice Giants in the outer part of Solar System:The outer region of solar system has 2 gas giants namely Jupiter and Saturn and two ice giants Uranus and Neptune. Jupiter and Saturn are called gas giants because they are composed of gases mainly Hydrogen and Helium and they are very large in volume and masses. Jupiter is the largest planet and second largest object only after Sun in the solar system. Uranus and Neptune composed mainly of heavier volatile substances which are referred to as 'ices' and that's why they are called ice giants.
Jupiter :It is the largest planet in our Solar System. Jupiter has 318 times more mass than that of earth. It is so large that it has 2.5 times more mass than all other solar system planets put together. It is composed largely of hydrogen and helium. Jupiter has 67 known satellites. Ganymede, on of the satellites of Jupiter is the largest satellite in the Solar System, is larger than Mercury.Saturn :This is another giant gas planet and second largest planet in the Solar System. It has 95 times the mass of Earth. It is least dense planet in Solar System as it has larger volume but comparatively less mass. Saturn is distinctively known for the ring system it possess. The rings of Saturn are made up of small ice and rock particles. Titan, the largest satellite of Saturn and the second-largest moon in the Solar System, is larger than Mercury and the only satellite in the Solar System with a substantial atmosphere.Uranus : Uranus the planet after Saturn is first ice giant in solar system. It is 14 times massive than earth. Though it is larger in volume than next ice giant Neptune it is lighter than Neptune. It is the coldest planet in the solar system. Uranus has 27 known satellites. Titania is the largest satellite of Uranus.Neptune : This is the 8th planet in solar system and 2nd ice giant after Uranus. It is 17 times massive than earth. Though it is massive than Uranus it is smaller in size and the smallest in outer four giant planets. Neptune has 14 known satellites. Triton is the largest satellite of Neptune.
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