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astronomer [astronomers]▼(one who studies astronomy)noun[UK: ə.ˈstrɒ.nə.mə(r)] [US: ə.ˈstrɑː.nə.mər]
astronomical unit [astronomical units]▼(measure of distance)noun[UK: ˌæ.strə.ˈnɒ.mɪk.l̩ ˈjuː.nɪt] [US: ˌæ.strə.ˈnɑː.mɪk.l̩ ˈjuː.nət]
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