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Note on Solar System

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SOLAR SYSTEM:

The Solar System is the Sun and all the objects in orbit around it. The Sun is orbited by planets, asteroids,comets and other things.The Sun is a star. It contains 99.9 percent of the Solar System's mass. This means that it has strong gravity. The other objects are pulled into orbit around the Sun. The velocity of the solar system is about 5000 km/sec. The sun is the largest and main star in solar system.The size of the solar system is 79.5 Au. There are 8 planets in the solar system. They are- Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. There are 67 satellites in our solar system. In, 1543 A.D it was discovered that the earth and other planets revolve around the sun. Nicolas Copernicus discovered the fact that the sun is in the centre of solar system but not the earth. He belongs from Poland. Sun is the centre of solar system.

Heavenly bodies which revolve around in its elliptical paths are called orbit. In solar system, the asteroids belt lie between the orbits of Mars and Jupiter. Solar system takes One cosmic year to revolve around galactic centre.

  • There are 8 planets in Solar system .They are (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune)
  • solar system take one cosmic year to revolve around galactic centre
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Very Short Questions

0%
  • What do you mean by solar system?

    Family of sun
    Family of planets
    Family of stars
    Universal collection of planets
  • What is the velocity of solar system?

     838,000 km/h
     848,000 km/h
     828,000 km/h
     818,000 km/h
  • Which is the largest and main star in solar system?

    Sun
    Venus
    Saturn
    Jupiter
  • How many satellites are there in our solar system?

    67
    20
    65
    50
  • How many planets are there in our solar system?

    8
    7
    10
    9
  • Who discovered the fact that the sun is in the centre of solar system but not the earth?

    Nicolas Copernicus
    Columbus
    None of the all
    Nico copernicus
  • What is the diameter of solar system?

    1,721.56 AU
    1,921.56 AU
    1,821.56 AU
    1,621.56 AU
  • When was it discovered that earth and other planets revolve round the sun?

    1643 A.D
    1443 A.D
    1540 A.D
    1543 A.D
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