| SAROS | Originally discovered by the ancient Babylonian astronomers known as the Chaldeans, an 18-year cycle between repetitions of solar and lunar eclipses (5) |
| GASLIGHT | 1944 George Cukor featuring the screen debut of an 18-year-old Angela Lansbury |
| ANGRYMEN | 12 ___ 1957 film starring Henry Fonda which is about a jury of 12 that deliberates on the trial of an 18-year old: 2 wds. |
| SEERS | Chaldeans |
| TIDE | Movement of the sea caused by gravitational interactions between the Moon, Sun and Earth, originally discovered by Seleucus of Seleucia (4) |
| PENICILLIN | Dorothy Crowfoot Hodgkin, winner of the 1964 Nobel Prize, discovered the structure of this antibiotic which was originally discovered by Alexander Fleming |
| SNAKE | Sixth of the animals in the twelve-year cycle of the Chinese zodiac, next occurring in 2025 (5) |
| DRAKE | Water bird originally discovered by thin person |
| ABACUSES | Beaded precursors to the calculator, thought to be of ancient Babylonian origin (8) |
| NABU | Ancient Babylonian god of writing and wisdom, married to Tashmetum, the granter of requests (4) |
| DIONE | This moon was discovered by the Italian-born French astronomer Gian Domenico Cassini in 1684 and named for a daughter of the Titan Oceanus in Greek mythology. It is accompanied in its orbit by two muc |
| COPERNICUS | Polish astronomer known for his theory that the Earth revolves around the sun |
| ADRASTEA | Smallest of the four inner moons of Jupiter, discovered by the space probe Voyager 2 in 1979 (8) |
| CAPEVERDE | African islands discovered by the Portuguese in the 15th century (4,5) |
| CHALDEAN | Prince received by key academic from ancient Babylonian region |
| TALENT | Ancient Babylonian, Greek or Roman unit of weight; or, a word for natural aptitude or skill (6) |
| GALILEO | Italian astronomer known for his observations of the moons of Jupiter, among other things |
| RADIUM | Element atomic no. 88 that was discovered by the Curies in 1898 (6) |
| LESTER | 18-year-old ... Piggott became the youngest jockey to win an English Derby when he rode Never Say Di |
| EXPLORER | --- Scout, a member of the section of The Scout Association for 14- to 18-year-olds (8) |
