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Observations by two of the European Space Agency's space observatories have provided a multi-wavelength view of the mysterious galaxy Centaurus A.
The galaxy Arp 220 is home to several giant star clusters—about 10 million solar masses—that are twice as massive as any comparable star cluster in the Milky Way Galaxy.
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Astronomers are using a similar sightseeing tactic, studying nearby extreme galaxies known as "luminous infrared galaxies" to learn about their distant counterparts in the early universe.
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