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Galaxy Mergers

This artist's concept shows the brilliant glare of two quasars residing in the cores of two galaxies that are in the chaotic process of merging. The gravitational tug-of-war between the two galaxies ignites a firestorm of star birth.

Hubble Spots Rare Cosmic Twins: Double Quasars Caught Playing in the Early Universe

This artist’s conception shows a late-stage galaxy merger and its two newly-discovered central black holes. The binary black holes are the closest together ever observed in multiple wavelengths.

Doomed pair of supermassive black holes the closest to collision ever seen

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