• Question: What is the universe made up of

    Asked by Aimee :) to Katherine, Shannon on 17 Nov 2017.
    • Photo: Katherine Benson

      Katherine Benson answered on 17 Nov 2017:

      Originally scientists thought that the universe was made entirely of normal matter (protons, neutrons and electrons). However, they’ve now discovered that dark energy and dark matter now actually make up more of the universe than this normal matter. These are not completely understood yet, but we do know that dark energy behaves with an opposite effect to gravity and so probably contributes to why the universe is constantly expanding.