The scientific study of matter – energy that is in the universe, in view of their origin, composition, distribution and movements called astronomy. It is one of the oldest science known to man. In ancient times, including astronomical observation studies of only the sun, moon and some stars and constellations visible to the naked eye. This was before the invention and development of the telescope.

Telescope is one of the most important inventions in the field of astronomy. It was invented by Galileo, a Greek astronomer in 1611. It was also used by many scientists and astronomers, including Sir Isaac Newton, who were the most powerful instrument that may have been developed. Due to the careful observation and examination of all heavenly bodies that surround us, have been significant discoveries and are still on our origin, existence and our future.

In general, the astronomy is divided into two categories: optical, where he met with direct recordings of space and its components, not optically, the branch dealing with things like black holes and stars neuron, photographs of visuals that are not yet possible to understood and accept characterized by their activities and radioactive energy signals.

There are different branches of astronomy on the basis of the main object in front. Planetary Astronomy (planets), solar astronomy (sun), stellar astronomy (star), Galactic Astronomy (Milky Way), extragalactic astronomy (other galaxies in the universe) and cosmology (structure of the universe) are all parts of the broad field of astronomy. Some of the participants in the highest subject of astronomy include names such as Galileo, Newton, Albert Einstein, Edwin Hubble and Stephen Hawking.