“Father of Geography” – Eratosthenese (Ist to measure earth circumfrence) “Systematic Geography” – Alexander Von Humbolt “Regional Geography” – Karl Ritter Origin & Evolution of Earth Ist Argument – Immanuel Kant (Germany) “Nebular Hypothesis” & “Binary Theories” – Laplace (1796) Modern Theory “Father of Big Bang Theory” - Georges Lemaitre (Belgium), Propounded by Edwin Hubble (1920) “Steady State Theory” - Hoyle The solar system consists of the Sun and 8 planets revolving around it in different orbits. The statistics of the sun and the planets are given below: SUN •Age : About 5 Billion years •Distance : 149.8 Million Kms •Diameter : 1,38,400 Kms. •Photosphere temperature : 5,770 K •Core temperature : 150,000,000 K •Absolute visual magnitude : 4.75 •Rotation (as seen from the earth at the equator) : 25.38 days •Rotation (near the poles) : 33 days •The sun consists of 71% of Hydrogen, 26.5% Helium...
A mile closer to the milestone...