How Do We Search For Other Planets?

A graphic showing los of cartoon planets, the numbers 1992 and 5000

How is the Universe Expanding?

Illustration representing the mesh used to describe gravity.

Create An Expanding Universe

You have likely heard about the Universe expanding. Or that redshift can tell us about the movements of galaxies. Both are difficult ideas to imagine and understand.

Cartoon of a person blowing up a balloon. The balloon is covered with galaxies.