The scheme consists of the sun itself, 9 planets, an oversize variety of satellites, thousands of tiny rocky asteroids associate degree an countless variety of comets. The sun is that the biggest member of scheme, and lies within the center of this method. it's a really massive body, it will accommodate a hundred and ten earths like ours'.
Sun is that the main supply of warmth and lightweight. The survival of all living beings on earth depends upon the energy obtained from the sun. The temperature of the sun's surface is regarding half dozen,000 centigrade. The temperature of its central core is regarding fifteen million centigrade. The sun along side its planets is taking possession a circle within the Universe.
The planets, revolve round the sun in elliptical orbits that area unit nearly circular, and square measure command to the sun by gravitation.
Planets:
Planets are known as wanderes as a result of they move round the sun in their mounted orbit. Planets square measure non lucent heavenly bodies that don't have any lightweight of their own. These look bright within the sky as a result of these mirror lightweight received from the sun. There square measure 9 planets. they're organized in orbit from the sun within the following order:
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. Mercury is that the nearest and pluto is that the farthest planet from the sun. Mercury is that the smallest planet and it's fifty eight million kilometers far from the sun. the most important planet of scheme is Jupiter.
Most of the planets have natural satellites or moon. solely 2 planets i.e. Mercury and venus, square measure with none moon. All the opposite planets have satellites or moons. Earth encompasses a single whereas Saturn has the maximum amount as eighteen moons of its own.
