WASHINGTON — A new panoramic view of the universe portrays the assembly of galaxies over 12 billions years of cosmic history, depicting that buildup over a wide range of wavelengths with unprecedented sharpness and depth. The farthest galaxies in the compiled image date from a time when the 13.7-billion-year-old universe was less than 1 billion years old, while the closest galaxies emitted their starlight 12 billion years later.
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