Tis is a WISE Infrared Andromeda.This infrared light from the spiral Andromeda Galaxy. Dust is heated by the Adromeda's star that is shown here in the red and yellow colors.This Andromeda is twice the diameter of our own Milky Way. Andromeda is the largest galaxy in the local group that we have observed. The WISE launched in December 2009, and it began a six month long infrared survey of the entire sky on January 14. It is expected to discover near-Earth asteroids as well as explore the distant universe, it has sensitive infrared detectors that are cooled by frozen hydrogen. I think this photo is amazing. It has to be one of my favorite APOD photos. I love the way the colors added in this photo pull out every detail.
http://apod.nasa.gov/apod/image/1002/andromeda_wise2048.jpg
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