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An infrared image of the Antennae Galaxy, a pair of relatively nearby colliding galaxies with regions emitting brightly from the carbon-rich grains called polyaromatic hydrocarbons (PAHs; seen here in red). Astronomers have detected luminous galaxies emitting from PAHs at an epoch when the universe was only about 3 billion years.
Credit: NASA Spitzer Space Telescope
Low Resolution Image (jpg)
Credit: NASA Spitzer Space Telescope
Low Resolution Image (jpg)
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