Science

Running Head : PLANETSDiscovering Planets before the Development of TechnologyThe existence of planets around the millions of stars in the universe was at first impossible . In fact , it didn t come to the minds of the earliest astronomers , although a very urbane idea was there to suggest that there were indeed separate meandering(a) systems around us . The idea was not entertained at first , but astronomers couldn t help assuming that someday , they will soon discover then-unidentifiable objects in the universe (Teerikorpi , Valtonen , Lehto Chernin , Lehto and Byrd ,. 463They were cognisant , though , that it was going to be difficult . However because astronomers kept discovering new planets , it becamse easier for them to accept that there ar other planetary systems in the universe aside from the Solar System (Teerikorpi , Valtonen , Lehto Chernin , Lehto and Byrd ,.

462Astronomers had assumptions nigh these how these other planetary systems looked like , and what composed the planets of the systems . They assumed that the planets argon just like those that can be found in the Solar System . Then again , indicating the discoveries would be a very big challenge . Planets Mercury , Venus , undercoat and Mars , which are the first four that are nearest to the sun , are the rocky planets (Teerikorpi Valtonen , Lehto Chernin , Lehto and Byrd ,. 462The Earth is the most bulky among these four . In fact , Earth is 1 / three hundred ,000 the Sun s mass . The last set of the nine planets are Jupiter Saturn , Uranus and Neptune . The...If you want to get a full essay, order it on our website: Orderessay

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