Hartley Comet was fisrt viewed last November and is the fifth comet viewed by a scacecraft from Earth. It has a six year orbital period Herschel space observatory have found that the comet has water with the same ratio of hydrogen in our oceans. The water is contained in the comets thin atmosphere. THe comet came from an icy regoin past Neptune, this leads scientists to believe that a significant portion of Earths water came from the Kuiper Belt. It is interesting to find other planets or comets with simular or the same concentrations of gases and elements. Because water is such a big part of our enviroment, finding more coments or planets with simular water cincentrations may be key to unlocking the constuction of the universe or life simular to that of our planet.
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