| SPACESHIPS | Powered craft used for exploration of the solar system |
| MINISUB | Car replacement, it's used for exploration in the main (4-3) |
| SCUBA | Kit used for exploration, primarily, in sea? |
| PALENQUE | In 1839, Frederick Catherwood and John Lloyd Stephens found the city of Copan. They continued on their exploration of the Yucatan Peninsula and found "The Temple of the Inscriptions" in this ruined ci |
| VESPUCCI | Amerigo, Florentine navigator noted for his exploration of the coast of South America (8) |
| SPICES | The trade of what substances motivated 15th-century European exploration of the East? (6) |
| TAO | 1975 book "The ___ of Physics: An Exploration of the Parallels Between Modern Physics and Eastern Mysticism" |
| VESSEL | A floating craft used for transport over water (6) |
| KEELBOAT | A flat-bottomed river craft used for cargo |
| PLEASUREBOAT | Craft used for amusement (8,4) |
| GEMINI | Program which ultimately led to exploration of the moon (6) |
| CATAMARAN | Dual-hulled sail or engine-powered powered craft - William Dampier observed them 'on the coast of Coromandel' in the course of his 17th century explorations |
| KONTIKI | What was the name of the craft used by Thor Heyerdahl for his 1947 Pacific expedition? (3-4) |
| SPACE | Room for exploration as it appears between the lines (5) |
| GINPALACE | Derisive term for a large pleasure craft used mainly for entertainment (3,6) |
| AVIONICS | Human-powered crafts in the form of bikes with biplane wings (8) |
| AVIETTES | Human-powered crafts in the form of bikes with biplane wings (8) |
| ORRERY | Mechanical model of the solar system showing the orbits of the planets around the sun at the correct relative velocities (6) |
| PROBE | Quietly put on attire for exploration |
| SPELEOLOGY | The scientific study or exploration of caves (10) |
