What is the Universe made out of?

Answer 1

72% dark energy 23% dark matter 4 % stars and galaxies etc.

Science only knows 4% of matter, consisting of 72% dark energy and 23% dark matter. We know very little about matter; among the 4% known are heavy elements like neutrinos and helium as well as hydrogen and helium.

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Answer 2

Owen Atkinson

The universe is primarily composed of ordinary matter, dark matter, and dark energy. Ordinary matter includes atoms and molecules, which make up stars, planets, and galaxies. Dark matter is a mysterious form of matter that does not emit or interact with electromagnetic radiation but exerts gravitational effects on visible matter. Dark energy is a hypothetical form of energy that permeates all space and accelerates the expansion of the universe.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.