shardendu dwived.roll no.:35

matter is made up of atoms or molecules.everything in the universe is made up of matter.In the universe matter are of two types dark matter which is about 4 times more than normal matter.dark matter is discovered in 1933 by swiss american astronomer fritz zwicky.dark matter is also known as missing stars.normal matter are atoms and all the celestial bodies are made up of normal matter or atoms.

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