Learn about the amount planets in the solar system and their existence can tell us about the beginning of earth.
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Learn About the Planets in the Solar System No one knows for sure just how much matter or even how many planets exist within our solar system. Since the discovery of the distant Pluto in the 1930s, astronomers have searched for the traces of planets even further out. And then in 2003, Hubble spotted something moving fast across the background of faraway stars to be an object within the solar system. The object later named Sigma is about three quarters the size of Pluto. It is so distant and so small compared to most planets that even to Hubble’s sensitive cameras it only appears as a spec of light. Sigma is the largest planet-like object discovered in the solar system since Pluto. Given the vast number of stars that exist, it is certain that some of those planets that have been discovered called extrasolar planets are capable of supporting extraterrestrial life. Using the Hubble, astronomers have been searching for planetary systems like ours orbiting other stars in the galaxy. Analysis of the light from the planet’s clouds that Hubble has discovered had made the astronomers departly determined the chemistry of its atmosphere. They’re looking for chemical traces that could be the result of living organisms in the way that oxygen on earth is created by plants. Science of chemicals like oxygen or methane in the atmosphere around extrasolar planets maybe sign posts to the discovery of life beyond our solar system.