Ay 1: The Evolving Universe

See on Scoop.itKnown Knowns

The Andromeda galaxy is the nearest spiral galaxy to our own, so it gives us the closest look at what the Milky Way might look like from the outside. This false-color infrared image was taken by WISE, a space-based telescope–older stars are shown in blue, while dust lanes heated by active star formation are shown in red and yellow. Small satellite galaxies of Andromeda are also visible. 

See on www.astro.caltech.edu

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