‘Green Valley’ Of Galaxies Shows Off Gas And Star Formation

(Before It's News)

M33, the Triangulum Spiral Galaxy, seen here in a 4.3 hour exposure image. Credit and copyright: John Chumack.

We keep saying this: the universe is more complex than it appears. Conventional thinking in galaxy research postulates that spiral galaxies have star-forming areas, while ellipticals do not due to a lack of gas. While this thinking has been debunked, there’s now emerging research showing a “green valley” of galaxies somewhat in between these two types.

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© Elizabeth Howell for Universe Today, 2014. |
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Post tags: elliptical galaxies, Galaxy Zoo, spiral galaxies

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