The Universe

The sun is a typical star which is about 150 million km away from the Earth. Solar ennergy provides virtually all the heat & light which are received by our planets & it therefore sustains every living entity. The character of our own environment is strongly influenced by solar radiation which has been a major factor in determining the course of natural evolution on earth. The Sun is important to Astronomers & physicts …

The Sun & major nine planets are the main bodies of our Solar System. In order of increasing distance from the Sun these are Mercury, Venus, earth, mars, Jupiter, Saturn, Uranus, Nepyune & Pluto. Sir William Herschel discovered Uranus in 1781 during a review of the entire sky which was so systematic as to be virtually certain to reveal any such object. A planet more distant from the Sun than Uranus …