Hubble constant

Introduction References & Edit History Related Topics

Images & Videos

Dr. Edwin P. Hubble stands beside the large 48-inch Schmidt Photographic Telescope at Palomar Observatory, preparing it for a sky survey.

Britannica editor Erik Gregersen, a white man wearing glasses, holds a microphone in front of a galaxy background. Displayed above him are the phrases: Ask an Editor, and How old is the universe?

Hubble constant: Media

astronomy

Videos

Britannica editor Erik Gregersen, a white man wearing glasses, holds a microphone in front of a galaxy background. Displayed above him are the phrases: Ask an Editor, and How old is the universe?

How Do We Know the Age of the Universe?

And how do you even start to answer this question?

Video: Encyclopædia Britannica, Inc.

Images

Dr. Edwin P. Hubble stands beside the large 48-inch Schmidt Photographic Telescope at Palomar Observatory, preparing it for a sky survey.

Dr. Edwin P. Hubble

Edwin Hubble, namesake of the Hubble constant, prepares for the National Geographic...

Bettmann/Getty Images

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