Relating to or involving different galaxies, or occurring between separate galactic systems.
From Greek hetero- (different) + galaxia (milky way) + -ic (adjective suffix). A rare astronomical term used in cosmology to describe phenomena involving multiple galaxies.
Heterogalactic research is showing us that galaxies don't just exist independently—they're constantly colliding and merging in slow-motion cosmic dances that take millions of years!
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