Sidney van den Bergh, Weidong Li, Alexei V. Filippenko, Classifications of the Host Galaxies of Supernovae, Set II, Publications of the Astronomical Society of the Pacific, Vol. 115, No. 813 (November ...

The objects within galaxies have two basic types of motions: orbiting around the galaxy centre in a regular organized disc, or in orbits oriented at random without a clear direction of rotaiton ...

So successful was the project that it spawned Galaxy Zoo 2 in February 2009 to classify another 250,000 SDSS galaxies. To date, more than 57 million classifications have been made by some 265,000 ...

Each image was classified an average of 40-45 times to ensure accuracy. More than 16 million classifications of more than 300,000 galaxies were gathered representing about 57 million computer clicks.

This week's image from the Hubble Space Telescope shows no less than three galaxies, including one which can't easily be categorized.

A team of international astronomers have discovered a galaxy that has changed classification due to unique activity within its core.