| OORT | Jan -; Dutch astronomer who proposed the existence of a theorised shell of icy objects existing beyond the Kuiper Belt (4) |
| OORTCLOUD | Theorised hypothetical spherical shell of icy planetesimals beyond the orbit of Neptune and the Kuiper Belt (4,5) |
| PETERHIGGS | Former professor at the University of Edinburgh, who proposed the existence of a 'God particle' (5,5) |
| KUIPER | ____ Belt, doughnut-shaped region of icy objects past the orbit of Neptune (6) |
| MONOD | Jacques Lucien ___, French biochemist and Nobel Laureate who, with Francois Jacob, proposed the existence of messenger RNA in 1961 (5) |
| GELLMANN | Nobel Prize-winning physicist who proposed the concept of strangeness in quarks and contributed towards the classification of elementary particles (4-4) |
| PAULI | United States physicist (born in Austria) who proposed the exclusion principle (thus providing a theoretical basis for the periodic table) (1900-1958). |
| PTOLEMY | Alexandrian astronomer who proposed a geocentric system that was undisputed until the late Renaissance (7) |
| SPHINX | With the head of a woman and the body of a lioness, a mythological Greek monster who proposed riddles to travellers (6) |
| ISAACNEWTON | Scientist who proposed the basic laws of motion |
| JANOORT | Dutch astronomer who confirmed the theory of galactic rotation (3,4) |
| COPERNICUS | Polish astronomer who proposed that the planets orbit the Sun (10) |
| LEMAITRE | Belgian astronomer who first proposed the big-bang theory of the universe (8) |
| COMET | A small, icy object that orbits the sun and a has a long "tail " (5) |
| ADAM | Smith who proposed "the invisible hand" |
| TRUMAN | President who proposed the Fair Deal |
| VANEYCK | Jan ... ...., Dutch painter whose works include The Arnolfini Portrait in the National Gallery (3,4) |
| FEDERALEXPRESS | Company whose founder first proposed the business concept in a college paper, earning a C |
| JOHNPYM | English statesman and opponent of Charles I who helped draft and first proposed the Grand Remonstran |
| PYM | John -, English statesman and opponent of Charles I who helped draft and first proposed the Grand Remonstrance (3) |
