Why did the early Universe contain only hydrogen but now contains a large variety....

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nettogrof

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Why did the early Universe contain only hydrogen but now contains a large variety of different elements?

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Kyx

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(Original post by nettogrof)
Why did the early Universe contain only hydrogen but now contains a large variety of different elements?

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Because hydrogen (and helium, which was also present, along with a tiny bit of lithium) are the easiest atoms to make. To make larger atoms, you need a high temperature and pressure. Such conditions are found only in stars.

So the stars made these heavier elements and ta dah! Here we are

uberteknik

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(Original post by nettogrof)
Why did the early Universe contain only hydrogen but now contains a large variety of different elements?

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Expansion, cooling and stellar evolution.

ghvfdc999

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Fusion in stars.

Light elements (H, He, Etc.) fused together under high temp. and pressure to create heavy elements (Fe, etc.)

anosmianAcrimony

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More specifically, H and He are fused under high pressure inside stars to make slightly heavier elements, like lithium, boron, nitrogen, and the like, and those elements are fused at even higher pressure to make still heavier elements, and those keep fusing to make even heavier elements. Elements heavier than iron are only produced in the massive, short-lived pressures created by supernovae, which also scatter all of the heavy stellar material over great swathes of space, ready to form new solar systems with planets and life.

Maker

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I always wondered why there is an imbalance of matter and antimatter in the universe, any ideas?

username2088165

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(Original post by Maker)
I always wondered why there is an imbalance of matter and antimatter in the universe, any ideas?

I remember reading somewhere that it's because antimatter decays more quickly than matter, I could be wrong though (I'm not very good at physics)

Bernie2016

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(Original post by Maker)
I always wondered why there is an imbalance of matter and antimatter in the universe, any ideas?

Pretty sure scientists are still trying to find out why there was an imbalance of antimatter and matter at the big bang so currently i dont think there is a solid answer for you unfortunately )':.

jarjarbinkss

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because when the volcanoes erupted, they released all sorts of gasses

ghvfdc999

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(Original post by jarjarbinkss)
because when the volcanoes erupted, they released all sorts of gasses

Lol. How could there be volcanoes in a universe containing only hydrogen?

uberteknik

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(Original post by Repsol)
Lol. How could there be volcanoes in a universe containing only hydrogen?

Look at the username dear boy............tis a troll.

jarjarbinkss

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(Original post by Repsol)
Lol. How could there be volcanoes in a universe containing only hydrogen?

not a troll honestly. I read the title wrong and thought it meant how did the early atmosphere contain little gases but now it contains a large variety of gases.

Kyx

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(Original post by Maker)
I always wondered why there is an imbalance of matter and antimatter in the universe, any ideas?

It seems that antimatter decays more quickly than matter.

agsha2612

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(Original post by anosmianAcrimony)
More specifically, H and He are fused under high pressure inside stars to make slightly heavier elements, like lithium, boron, nitrogen, and the like, and those elements are fused at even higher pressure to make still heavier elements, and those keep fusing to make even heavier elements. Elements heavier than iron are only produced in the massive, short-lived pressures created by supernovae, which also scatter all of the heavy stellar material over great swathes of space, ready to form new solar systems with planets and life.

This was really helpful. Thank You!!