A space telescope orbiting Earth that captures images of distant galaxies and stars, or astronomical observations showing distant galaxies are receding.
Named after Edwin Hubble, American astronomer (1889-1953), whose discoveries revolutionized our understanding of the universe's size and expansion.
Edwin Hubble proved the universe is expanding and that our Milky Way is just one galaxy among billions—perhaps the most humbling discovery ever, showing our cosmic insignificance.
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