Answer:
Composition. The universe is composed almost completely of dark energy, dark matter, and ordinary matter. Other contents are electromagnetic radiation (estimated to constitute from 0.005% to close to 0.01% of the total mass-energy of the universe) and antimatter.
Main contents: Ordinary (baryonic) matter
Diameter: Unknown. Diameter of the observable
Mass (ordinary matter): At least 1053 kg
Explanation:
hope it will help and u won't forget to mark brainiest!
