Dark Matter Final Project Research Paper

Abstract

The identity of dark matter and dark energy which makes up 85-90% of the total mass in the universe, is one of the biggest unresolved issues in particle physics according to BBC Science Focus Magazine. So what do dark matter and dark energy do? They play an important role in galaxy formation and the universe's expansion. It is one of the most accepted theories that support the universe's expansion that gravity pulls galaxies together, while dark energy pushes them apart. Which force is stronger? Gravity or dark energy determines whether the cosmos is expanding or contracting. [1]. As an illustration, the Big Bang diagram down below shows that the universe’s expansion speed is increasing and eventually getting progressively faster and is affected by dark energy.