Edwin Powell Hubble is renowned for determining that there are other galaxies in the Universe beyond the Milky Way, and for observing that the universe is expanding at a constant rate. Hubble was ...

A century ago this month, a brash astronomer leaked a discovery that opened our view to the cosmic distance scale and the ...

It seems like almost yesterday that a teacher told me when I was very young, that the Milky Way was the very end of our ...

The two keys to Edwin Hubble's breakthrough discovery were forged by others in the 1910s. The first key, the period-luminosity scale discovered by Henrietta Leavitt, allowed astronomers to ...

Building big telescopes on mountain tops is one solution, but Hubble offers an even better view. Named after Edwin Hubble, the US astronomer who in the 1920s showed through observations of distant ...