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see done.. I am a real astronomy lover... ..i love you astronomy.... ✌
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OK guys hope you didn't forgot about me..... so today's topic is Oort Cloud.... so lets start.....
Prior to 1950, Scientists didn't have the slightest idea that something like that could even exist. In 1950 however, a Dutch astronomer know as Jan Oort proposed that a spherical cloud of icy planetesimals exist beyond our know solar system. The sphere was then named after Jan Oort and hence, known as Oort Cloud
Some scientists believe that Oort Cloud starts at 2000 or 5000 Astronomical Units and ends at 50,000 Astronomical Units. An AU or Astronomical Unit is the distance between sun and earth. Other scientists believe that the Oort Cloud extends all the way up to 100,000 to 200,000 AU. The solar system's cosmographical boundary is defined by the outer limit of Oort Cloud. To simplify things, sun's gravitational dominance ends with Oort Cloud. Scientists believe that the Oort Cloud actually consists of two parts :the inner Hills which is a disc shaped Oort Cloud and the outer spherical Oort Cloud. The objects in the cloud are icy and are mainly made of methane, ammonia and water........ hope you all liked it..... coming up with more info... till then wait..... ✌
