10/28/10
Ultraviolet Andromeda
This vista represents the highest resolution image ever made of the Andromeda Galaxy (m31) at ultraviolet wavelights! We have just learned about the light spectrum and it's to see just how much more stunning the image is here is ultraviolet than it would be in optical light. The mosaic was recorded by NASA's Swift Satellite and is composed of 330 individual images covering a region 200,000 light years wide! DOmintaed by hot, young stars and dense star clusters that radiate strongly in energetic and ultraviolet light, it shows about 20,000 sources. The Andromeda Galaxy is closest large spiral galaxy to the Milky Way at a distance of about 2.5 million light-years.
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