solar system

What is Solar System
The Sun, the planets around the Sun and the satellites around the planets are jointly called the Solar system.

The planets in the solar system move in a regulated path, why
Because of the gravitational force of attraction of the Sun

What is cosmic year
The revolution of the Solar system around the center of the Milky Way is called cosmic year. Time taken for one revolution is 250 million years.

What is the distance of Solar system from the center of the galaxy?
It is 30,000 to 33,000 light years.

From where was Solar system originated?
It was originate in a primitive Solar Nebula of a rotating disc of gas and dust

What is Van Allen Belt?
Van Allen Belt is a Zone of Ozone in the ionosphere

What is the importance of Van Allen Belt?
Van Allen Belt keeps away the ions and poison gases from outer space. The deflection of the ions by the Van Allen Belt is seen as auroras.

Who discovered the Van Allen Belt and When?
The American scientist Van Allen discovered it in Nov ember 1958

What is Parsec?
It is a measure of distance in the space, equivalent to 3,262 light years.

What is a geo-stationary satellite
It is a satellite that revolves round the earth at a suitable height with same velocity and in the same direction as earth does in its own axis.

What is Edwin Hubble’s theory?
The farther away a galaxy is, the faster it is receding from the earth.