Hundreds of thousands of volunteers have helped to overturn almost a century of galaxy classification, in a new study using data from the longstanding Galaxy Zoo project. The new investigation ...

Hubble also devised a classification system for galaxies, grouping them according to their content, distance, shape, size and brightness.

NGC 3430's distinct shape may even have inspired astronomer Edwin Hubble to use it to define his classification of galaxies.

Edwin Hubble joined the Mount Wilson Observatory team in California in 1919, just two years after the observatory’s Hooker Telescope, which was the largest telescope in the world at that time ...

The same Cepheid stars, subjected to the same analytical techniques, enabled Edwin Hubble to appreciate the enormous distances to the spiral nebulae. Hubble used Cepheids in 1924 to show that the ...

How Edwin Hubble won the Great Debate A century ago, a brash astronomer leaked a discovery that opened our view to the cosmic distance scale and the nature of galaxies.

Hundreds of thousands of volunteers have helped to overturn almost a century of galaxy classification, in a new study using data from the longstanding Galaxy Zoo project. The new investigation ...