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| | |mhl=1420 a<ref name=calc/> | | |mhl=1420 a<ref name=calc/> |
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| − | The '''Earth''' is the only known [[planet]] in our '''Solar System''' except for [[Mars]] which can support [[life]]. It contains [[water]], reasonable levels of [[oxygen]], and a stable [[temperature]] range. Geometrically speaking, Earth is the largest of the terrestrial (rocky) planets in the [[solar system]]. | + | The '''Earth''' is the only known [[planet]] in our '''Solar System''' which can support [[life]]. It contains [[water]], reasonable levels of [[oxygen]], and a stable [[temperature]] range. Geometrically speaking, Earth is the largest of the terrestrial (rocky) planets in the [[solar system]]. |
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| | ==Physical Description== | | ==Physical Description== |
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| | ==Origin== | | ==Origin== |
| − | People disagree about when and how the Earth was created. The only scientifically supported theory is that: | + | People disagree about when and how the Earth was created. The three most popular ideas are: |
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| − | #That the Earth came into existence billions of years ago (approximately 4.5 billion years in modern estimates), but entirely through natural processes and without any intervention by a god.
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| − | Other fringe theories held by some small sects radical religious extremists, now considered cults by mainstream Americans include:
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| | #That God created the Earth several hundred generations ago, as recounted in [[Genesis]]. By adding years and other time indications in the [[Old Testament]] chronologies, one can calculate the age of the Earth as approximately 6,000 years (see [[Date of creation]] and [[Young Earth Creationism]]). | | #That God created the Earth several hundred generations ago, as recounted in [[Genesis]]. By adding years and other time indications in the [[Old Testament]] chronologies, one can calculate the age of the Earth as approximately 6,000 years (see [[Date of creation]] and [[Young Earth Creationism]]). |
| | #That God created the Earth billions of years ago (see [[Old Earth Creationism]] and [[Theistic Evolution]]). | | #That God created the Earth billions of years ago (see [[Old Earth Creationism]] and [[Theistic Evolution]]). |
| | + | #That the Earth came into existence billions of years ago (approximately 4.5 billion years in modern estimates), but entirely through natural processes and without any intervention by God. |
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| | + | Clashes between adherents of these ideas have gone on since time immemorial (see [[origins debate]]), though the last theory has only matured in the last 200 years. |
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| | == Young Earth Creationist view == | | == Young Earth Creationist view == |