Question

what is universe made up of ?

Answer 1

The Universe is thought to consist of three types of substance: normal matter, 'dark matter' and 'dark energy'. Normal matter consists of the atoms that make up stars, planets, human beings and every other visible object in the Universe.

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Answer 2

Astronomers like to call all materials made up of protons,neutrons and electrons "baryonic matter".until about 30 years ago,astronomers thought that the universe was composed almost entirely of this "baryonic matter"ordinary atoms