A star-lover; a person who loves or studies stars, especially in poetic or literary contexts.
From Greek 'astro-' (star) and 'phelos' (lover of), this word was popularized by Sir Philip Sidney's sonnet sequence 'Astrophil and Stella' in the 1580s, where it represented idealized love.
Sidney's 'Astrophil' is actually a pun—the name means 'star-lover' in Greek, but the character is chasing a woman named Stella, which means 'star' in Latin, so he's literally a lover of stars!
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