Solar system

  • unnamedThe solar system includes the sun, the eight planets, and their satellites
  • The sun is in the mid of the solar system and all these are moving around it
  • The gravitational attraction of the sun keeps all the planet and other objects moving around it
  • Planets move around the sun in elliptical orbit
  • In the solar system planet, which nearest to the sun is mercury and the planet farthest from the sun is Neptune
  • The size of the solar system has been evaluated to at about 10^Au
  • The solar system is dominated by the sun which accounts for almost 99.9% of the matter in the whole solar system
  • The sun is also the source of all energy in the solar system
  • Pluto is dwarf planet
  • Mercury, venus , earth ,marse called terrestrial planets and Jupiter Saturn ,Uranus and Neptune are called gaseous planet

Members of the solar system

The sun

  • The sun is at the centre of the solar system
  • Its size is thirteenth (13) lakh times as that of the earth
  • It is the nearest star to the earth
  • It is the ultimate source of energy for life on earth
  • Its diameter is 14 lakhs km
  • It is composed of 71% hydrogen
  • It has a surface temperature of 5778k
  • Shining surface of the sun is photosphere  it appears like a disk
  • The planet travels with the sun through millions of stars in our galaxy at a speed of 70,000 km per hours
  • The sun is about the 150 millions away from the earth

The planets

  • These are the implicit bodies which continuously moves around and are lighted by the sun
  • There are eight (8) planets in the solar system
  • NASA has recently discovered 9th planet  named as Carla
  • The sequence of the planets from the sun is as below
  • Mercury
  • Venus
  • Earth
  • Mars
  • Jupiter
  • Saturn
  • Uranus
  • Neptune
  • The sequence of planets according to their size
  • Jupiter
  • Saturn
  • Uranus
  • Neptune
  • Earth
  • Venus
  • Mars
  • Mercury
  • Jupiter is the biggest and mercury is the smallest planet of our solar system

 

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