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Universe Formation

Artist’s impression of the interacting galaxies observed in this research. The gravitational interactions during the merger trigger both starburst and quasar activity.

Galaxy Merger Reveals Birth of Cosmic ‘Monster’ 12.8 Billion Years Ago

Composite colour image of the interacting galaxy cluster El Gordo, showing X-ray light from NASA's Chandra X-ray Observatory in blue, optical data from the European Southern Observatory's Very Large Telescope in red, green, and blue, and infrared emission from NASA's Spitzer Space Telescope in red and orange.

Titanic galaxy cluster collision in the early Universe challenges standard cosmology

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