There are three main theories :- 1. The Steady State Theory 2. The Big Bang Theory 3. The Pulsating Theory The Steady Sate theory: It states that the counting of the galaxies in our Universe is constant and new galaxies which are forming continuously are filling the empty spaces which are created ...

To study the Hubble’s law we have to study the Red Shift first. Red Shift: From the studies it was found that the spectrum automatically bends towards the red end of the spectrum with the passage of time. This is called Red Shift. Red color has ...

In galaxies there are small groups of stars. These small groups of stars present inside a galaxy are known as star clusters. Two types of clusters are there:- 1. Globular clusters 2. Galactic clusters ...

Those sources which have the power to emit the radio signals after fixed time intervals. The discovery of the PULSAR was not done by a single person. It was a team work. The discovery was completed in 1967 at Cambridge University of England. ...

The word Quasar is made up of Quasi-Stellar-Radio-Sources. Basically quasar is a category of radio galaxies. Quasars are the heavenly bodies similar to stars. These are strong source of radio radiations. ...

Galaxy is a name given to the collection of stars. There are a no of galaxies present in the universe. Galaxies may or may not have regular shapes. The sizes of the galaxies also vary. The size of the galaxies depends upon the no of ...

According to the rule of nature that nothing is permanent. So, stars after completing their life period become dead ultimately. ...

Those luminous heavenly bodies which have their own light are called stars. We can see near about 2500 stars on a clear night with our naked eye. But in actual, total no of stars are countless. The star which is nearest to earth is sun. ...