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Out of all the mass and energy in the universe, ordinary matter (the stuff that makes up stars and gas, and all the things we interact with in everyday life) constitutes about
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Out of all the mass and energy in the universe, ordinary matter (the stuff that makes up stars and gas, and all the things we interact with in everyday life) constitutes about

User Yona
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Answer:

About 5 % of the universe is visible.

Estimates are that 68 % of the universe consists of "dark energy" and 27% of the universe consists of "dark matter". Currently 95 % of the universe is not currently visible to the scientists involved (cannot be explained by means that we know).

User Daniel Brotherston
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