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How did the sun and earth originate?

Updated: 8/21/2019
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8y ago

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Our Solar system is the accumulation of the debris of a Nova. in fact, Astrophysicists consider Earth and the Solar System to be a third generation system. Immediately after the Big Bang, some 14 billion years ago, there was essentially only hydrogen and Helium in the Universe. This coalesced to form stars, and several of these accumulated to make a star that eventually became hot enough (due to gravitational pressure) that it exploded. In this process of immense heat and pressure, heavier elements were created, and in the longer run, new stars were made, composed of these heavier elements- and some of the lighter ones as well.

These 'second generation' stars eventually grew too large (by their gravity attracting other matter from surrounding space), and they in turn exploded as a bigger Nova. In this process, once again, the heat and pressure existed for sufficient time, that even unlikely reactions took place. The name given to this process is Nucleogenesis. And from the debris of this explosion, the elements we know of were formed.

Our Sun by comparison is only big enough to make elements up to the mass of Iron. You have to have a much bigger star to generate the heavier elements. Our Solar system was produced roughly 4.5 billion years ago.

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Q: How did the sun and earth originate?
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