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A pair of colliding galaxies as seen in the infrared and optical in a rare, short-lived phase of their evolution just before they merge into a single, larger galaxy. New SMA observations of similar colliding galaxies in the early universe concludes that these interactions produce short bursts of star formation that light up the galaxies.
Credit: NASA Spitzer, Hubble, and S. Bush
Low Resolution Image (jpg)
Credit: NASA Spitzer, Hubble, and S. Bush
Low Resolution Image (jpg)
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