Crossword puzzle clue "second century astronomer"

Here are the possible solutions for second century astronomer clue

Answer
Clue
Relevancy
ptolemy
Clue
Second-century astronomer
Second-century astronomer and mathematician
Influential second-century Greek astronomer and geographer
Influential second-century astronomer
halley
Clue
British astronomer of 18th century.
Britain's second Astronomer Royal
eloi
Clue
Earth dwellers of the 8,028th century in a 19th-century book
eon
Clue
Century upon century
Definition
a long period of time, also AEON

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