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.

Timeline of Astronomy

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Did you know that our understanding of science and space had gradually been built over thousands of years? Discover the people from the past whose observations and experiments helped us understand our Solar System and the Universe.