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*formed 9.2 billion years after “the big bang”*
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*”the sun” formed about 4.6 billion years ago from the collapse of part of a ‘giant molecular cloud’ that consisted mostly of ‘hydrogen’ + ‘helium’ and that probably gave birth to many other ‘stars’*
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(this age is estimated using ‘computer models’ of ‘stellar evolution’ + through ‘nucleo-cosmo-chronology’)
(the result is consistent with the ‘radiometric date’ of the oldest ‘solar system’ material, at 4.567 billion years ago)
(studies of ancient ‘meteorites’ reveal traces of stable ‘daughter nuclei’ of ‘short-lived’ isotopes, such as ‘iron-60’, that form only in ‘exploding’ / ‘short-lived’ stars)
(this indicates that one or more ‘supernovae’ must have occurred near the location where ‘the sun’ formed)
(a ‘shock wave’ from a nearby ‘supernova’ would have triggered the formation of ‘the sun’ by compressing the matter within the ‘molecular cloud’ and causing certain regions to collapse under their own ‘gravity’)
(as one fragment of the ‘cloud’ collapsed it also began to rotate because of “conservation of ‘angular momentum’ + ‘heat’ up with the “increasing pressure”)
(much of the ‘mass’ became concentrated in the ‘center’, whereas the rest flattened out into a disk that would become the ‘planets’ and other ‘solar system’ bodies)
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*’gravity’ + ‘pressure’ within the core of the ‘cloud’ generated a lot of ‘heat’ as it accreted more ‘matter’ from the surrounding ‘disk’, eventually triggering ‘nuclear fusion’*
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(thus, ‘the sun’ was born)
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💕💝💖💓🖤💙🖤💙🖤💙🖤❤️💚💛🧡❣️💞💔💘❣️🧡💛💚❤️🖤💜🖤💙🖤💙🖤💗💖💝💘
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*🌈✨ *TABLE OF CONTENTS* ✨🌷*
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🔥🔥🔥🔥🔥🔥*we won the war* 🔥🔥🔥🔥🔥🔥