From such a long time, the scientists are trying to get more and more information about the universe. Basically their interest is to study the motion of the heavenly bodies. Ptolemy was the first Greek astronomer to start the study of the planetary motion of ...

Optical Astronomy: It is the observation of the heavenly bodies through the optical window. Some of the techniques that are used for this type of study are reflecting telescopes or refracting telescopes. There are lot of dust particles present in air i.e. in the way ...

The study of composition, motion, and other related facts is called Astronomy. It is not an experimental science. The reason is that we can’t control or change the particular occurrences of the heavenly bodies of the nature. So we can say it as an observational ...

The word physics is derived from Geek word ‘fusis’ which means nature. The Sanskrit word ‘Bhautiki’ is used for the study of physical world. So Physics can be defined as the branch of science which deals with nature and natural phenomena. Two principles thrusts in ...