| SODDY | Chemist who developed the theory of isotopes and assisted William Ramsay in the discovery of helium (5) |
| ASTON | Nobel laureate who invented the mass spectrograph, discovered a number of isotopes and the whole-number rule (5) |
| LOCKYER | Norman ___, English astronomer whose spectroscopic analysis of the sun led to the discovery of helium (1886) |
| KUZMIN | Nikita, Ukrainian dancer who partnered Tilly Ramsay in the 2021 Strictly Come Dancing contest (6) |
| AAATEAMS | The Albuquerque Isotopes and Jacksonville Jumbo Shrimp, for two |
| CARBONDATING | The use of isotopes to determine age |
| ISOTRON | In physics, a device for separating small quantities of isotopes (7) |
| 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). |
| RAYLEIGH | 3rd Baron -; title of John Strutt, scientist awarded the 1904 Nobel Prize in Physics with William Ramsay for his part in the discovery of argon (8) |
| CORI | First woman to be awarded the Nobel Prize in Physiology or Medicine for her role in the discovery of the course of the catalytic conversion of glycogen (surname only) |
| BLAISE | 17th Century French mathematician and philosopher who developed the theory of probability with Pierr |
| PASCAL | 17th Century French mathematician and philosopher who developed the theory of probablity with Pierre |
| YOUNG | Physicist and Egyptologist who helped to establish the wave theory of light and assisted in the Rosetta Stone's decipherment (5) |
| EINSTEIN | Gennan-born theoretical physicist who developed the theory of relativity, Albert _ (8) |
| PIERRETEILHARDDECHARDIN | French philosopher and priest who took part in the discovery of Peking Man |
| SEABORG | Scientist who shared the 1951 Nobel Prize in Chemistry for involvement in the discovery and investig |
| ALBERT | Scientist who developed the theory of relativity (6,8) |
| DARWIN | Naturalist who developed The Theory of Evolution (6) |
| DNA | Nobel prizewinner for medicine Maurice Wilkins was a pioneer in the discovery of this structure of l |
| HEWISH | Radio astronomer awarded a Nobel Prize in Physics for his role in the discovery of pulsars (6) |
