| COPERNICUS | Polish mathematician and astronomer (1473-1543) |
| SUN | Nicolaus Copernicus (1473-1543) declared that the Earth moves around this |
| POLISH | Nationality of astronomer Nicolaus Copernicus, born in 1473 (6) |
| LAPLACE | French mathematician and astronomer who formulated the nebular hypothesis concerning the origins of the solar system and who developed the theory of probability (1749-1827). |
| SOMERVILLE | Mary -- (nee Fairfax), 1780-1872, Scottish mathematician and astronomer (10) |
| PTOLEMY | Greek mathematician and astronomer (7) |
| ISAAC | ___ Newton English mathematician and astronomer |
| GALILEO | Italian mathematician and astronomer who perfected the refracting telescope (7) |
| GAUSS | Renowned 19th-century German mathematician and astronomer |
| ARYA | Pioneering mathematician and astronomer ____bhata |
| KHAYYAM | Persian poet, mathematician and astronomer (c. 1048-1131) whose Rubaiyat (quatrains) were translated into English by Edward Fitzgerald in 1859 (4,7) |
| OMARKHAYYAM | Persian poet, mathematician and astronomer popularised by Edward Fitzgerald (4,7) |
| ERATOSTHENES | Greek mathematician and astronomer who calculated the circumference of the earth by observing the angle of the sun's rays (12) |
| NICOLAUSCOPERNICUS | Polish astronomer whose theory of the solar system was published in 1543 (8,10) |
| BYRD | William, English composer and organist born in 1543 (4) |
| ANDERS | First name of the Swedish physicist and astronomer Celsius (6) |
| CULPEPER | Nicholas --, English herbalist and astronomer (1616-54) (8) |
| EDWIN | Giant and astronomer of Welsh legend (5) |
| OMAR | Poet and astronomer Khayyam |
| SAGAN | Cosmos writer and astronomer Carl |
