Question

Describes the structure & composition of the universe

Answer 1

The universe doesn't have any centre or edge.Its expanding continuously with the rate of expansion higher and higher.the universe contains mainly contains hydrogen and helium.5% matter 25% dark matter and 70%dark energy

Answer 2

$Composition$

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.