Complex sentence: Urania (;, "Ourania"; meaning "heavenly" or "of heaven"), also spelt Uranus, was, in Greek mythology, the muse of astronomy and a daughter of Zeus by Mnemosyne and also a great granddaughter of Uranus.
Split into simpler sentences: Urania (;, "Ourania"; meaning "heavenly" or "of heaven"), also spelt Uranus, was, in Greek mythology, the muse of astronomy. Urania was the daughter of Zeus by Mnemosyne and also a great granddaughter of Uranus.