dark energy

We are told that we live in a universe filled with a mysterious entity called dark energy. In this article we try to explain what scientists mean by dark energy, and how we infer it exists.

What is dark matter? How do we know it exists? Where is it found? This article explores such questions, showing how the study of the largest structures in the Universe tells us something about the smallest constituents of matter.

17065 registered users
6649 resources