ASTB03-2745

Discoverer of Expanding Universe Georges Lemaître, (17 July 1894 – 20 June 1966) was a Belgian Catholic Priest, astronomer, and professor of physics at the Catholic University of Leuven. [1]                                                  Graph 1 George Lemaitre                                                            His study in civil engineering was interrupted by World War 1 when he joined the army. Coming back from the battlefield, he studied Mathematics and physics. He began his astronomy study in 1923, as a graduate student at University of Cambridge. Two years later he went back to Belgium and worked as a part-time lecturer at the Catholic University of Leuven. Contribution to the idea...

The Changing Pluto Pluto Pluto, used to be considered as the ninth planet of the solar system, is a now the largest dwarf planet in the Kuiper Belt, which is a shadowy zone consisting of trillions of comets beyond the orbit of by Neptune [1]. It was first discovered by the American astronomer Clyde Tombaugh in 1930 as a planet and later reclassified as a dwarf planet by the International Astronomical Union in 2006.  Before the Clyde Tombaugh, the American astronomer Percival Lowell first realized the existence of Pluto through the observation of the orbit of Neptune and Uranus, which is different than predicted unless there is another planet’s gravity tugging the two planets from the beyond. However, even though he spent his remaining 11 years in calculating the position and searching for the "trans-Neptunian" planet [2], he died in 1916 without finishing his research.  Later on, with the fund provided by Lowell's broth - Harvard University President A. Lawren...