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Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
Leavitt's Law, as it is now called, lets scientists use Cepheids as "": objects whose intrinsic brightness is known, and therefore, whose distance can be calculated.
Source: https://phys.org/news/2023-05-fast-universe-multiple-views-star.html