Neptune began just as all the other planets in our solar system did and the condensation theory describes the process of how they formed (Chaisson & McMillan, 2011 p. 147). The basic thought process behind the condensation theory is that when a star is born a dust and gas cloud forms and begins rotating around the parent star, planets are then formed from the accumulation (or condensation) of these materials (Chaisson & McMillan, 2011 pp. 147 & 149). While this is just a basic overview of the theory (and the formation of the planet), it allows us the basic understanding of Neptune’s beginnings. The planet has been around for almost five billion years. However, it was not discovered until just recently (in comparison with the overall lifetime of the planet).
Neptune was discovered first in September of 1845, again in June of 1846, and again later in the summer of 1846; three different men discovered the planet (John Adams was the first, Urbain Leverrier was the second, and Johann Galle, the third). Consequently, only Adams and Leverrier are credited with the discovery of the planet (Chaisson & McMillan, 2011 p. 315). According Astronomy Today, Galle was not originally credited with the discovery of the planet (Chaisson & McMillian, 2011 p.315). However, he is often credited with the discovery today. One more important thing about ...
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