How Fast Is the Universe Expanding?

Introduction References & Edit History Related Topics

Images

Bright lights scattered against a dark background. Some are round and bright. Others are small and dim.

How Fast Is the Universe Expanding?: Media

Learn why the Hubble constant doesn’t seem to be very constant.

Images

Bright lights scattered against a dark background. Some are round and bright. Others are small and dim.

A Small Part of the Universe

Powerful space telescopes can detect light from the first stars in the universe....

NASA, ESA, J. Lotz, M. Mountain, A. Koekemoer, and the HFF Team (STScI)