A handout photo released on
December 3, 2012 by the European Southern Observatory (ESO) shows
thousands of galaxies in the distant Universe viewed from the
Canada-France-Hawaii Telescope. But the one close to the center looks
very odd — it is bright green. (AFP Photo/EUROPEAN SOUTHERN
OBSERVATORY/M. SCHIRMER)
Most galaxies have a black hole which sucks in matter at their core. These newly discovered ‘green bean’ galaxies have less active black holes which give off ionized gas which gives them a green hue.
The astronomers think the color could signal star formation. Mischa Schirmer at the Gemini Observatory was the first to notice an unusual green spot while looking for galaxy clusters using their telescopes in Chile and Hawaii. With the help of European scientists the researchers began scanning the stars looking for similar galaxies. Out of the hundreds of billions of galaxies in the Universe the scientists have only found 16 of the ‘green bean’ variety.
They are one of the rarest objects in the universe, and it’s estimated there will be on in a cube of space with a side measuring 1.3 billion light years.
Schirmer says discovering a new galaxy class is a very inspiring “once-in-a-lifetime event,” he believes it’s an “astronomer’s dream come true”.
http://rt.com/news/green-bean-galaxy-revealed-332/