| Clue | Source | Date |
|---|---|---|
| & 18D 2007-19 US television sitcom starring Johnny Galecki and Jim Parsons (3,3,4,6) | Mirror Quiz | 29 Jan 2026 |
| Explosive start? | Universal | 30 Apr 2020 |
| Explosive theory? | New York Times | 26 Aug 2017 |
| Explosive theory? | ||
| Name of a certain theory | ||
| Cosmologist's theory |