Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
They've been common in science fiction but weren't confirmed until the Kepler mission found the first one.
Source: https://phys.org/news/2023-02-astronomers-planet-orbiting-stars.html