| Answer | Crossword Clue |
|---|---|
| NEUTRINOS | They're produced in great quantities by supernovas |
| californium | a synthetic element produced in trace quantities by helium isotope bombardment of curium |
| californiums | CALIFORNIUM, a synthetic element produced in trace quantities by helium isotope bombardment of curium |
| hassium | a synthetic element produced in small quantities by high-energy ion bombardment. Symbol: Hs; atomic no: 108 |
