This puzzle asks you to find the single category linking five clues: William and Caroline Herschel, Tycho Brahe, Carl Sagan, Nicolaus Copernicus, and Galileo Galilei. The answer is Famous astronomers. The clues look unrelated on the surface but share one precise category. Read all five before guessing — the link should feel natural on every row. With only "William and Caroline Herschel", many categories could fit. Hold your first guess and watch what clue 2 eliminates. "William and Caroline Herschel" and "Tycho Brahe" must share one repeatable link — not a coincidence between two words. By clue 3 ("Carl Sagan"), "Famous astronomers" should explain all three without bending meanings. "Nicolaus Copernicus" strengthens "Famous astronomers" rather than opening a new theory. The final clue ("Galileo Galilei") confirms "Famous astronomers" — if it still fits naturally, the category is locked. Use the Solution tab above for an interactive clue-by-clue walkthrough, or the Solved board tab for the complete answer at a glance.