Europe's Euclid space telescope, which is on a mission to shed light on the mysteries of dark matter and dark energy, ...

A collision between two galaxies leaves "scars" on the surviving cosmic body, which generally contains some of the first stars created within the original galaxy.

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The result, though, is a cosmic mirage, allowing Webb to pick up the same galaxy at three distinctly different points in time. If you’ve paid attention to Webb’s previous observations at all ...