Add Yahoo as a preferred source to see more of our stories on Google. An artist's impression shows the giant spiral galaxy NGC 1365 as it collides and merges with a smaller companion galaxy, stirring ...
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‘Space archaeologists’ use oxygen map to reconstruct a galaxy’s 12-billion-year past
The oxygen in a galaxy does not sit still. It spreads, thins out, piles up, and leaves behind a record of where stars formed, where gas moved, and when smaller galaxies crashed in. In the nearby ...
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