Antikythera or Anticythera (/ˌæntɪkɪˈθɪərə/, /ˌæntɪsɪˈθɪərə/; Ancient Greek: Ἀντικύθηρα Greek: Αντικύθηρα, [andiˈciθira], literally "opposite Kythera") is a Greek island lying on the edge of the Aegean Sea, between Crete and Peloponnese.