| RINGSOFSATURN | In 1610, Galileo became the first human to view these (planets) |
| INVERTEBRATE | As per #28-Across... Marine ___ Collection (no backbone is required to view these specimens!) |
| LOVEHEARTS | Oh! Is that how the compiler views these sweets? |
| SEETH | In old-fashioned way, views these reforms (5) |
| ARMSTRONG | Neil ---, US astronaut who became the first human to walk on the moon in 1969 (9) |
| AMUNDSEN | Explorer who became the first human to reach the South Pole (8) |
| ABEL | According to the book of Genesis, the first human to die (4) |
| INSULIN | In 1965 this hormone became the first human protein to be synthesised, helping in the treatment of d |
| YURIGAGARIN | The first human to travel in space |
| GAGARIN | Cosmonaut who was the first human to travel in space, Yuri ... |
| LEONOV | Alexei -; cosmonaut who was the first human to walk in space (6) |
| ALEXEI | Cosmonaut Leonov, the first human to walk in space |
| NORGAY | Sherpa mountaineer born Namgyal Wangdi who, with teammate Edmund Hillary, was the first human to reach the summit of Mount Everest (6) |
| ALEXEILEONOV | Soviet cosmonaut who was the first human to conduct a spacewalk (6,6) |
| HILLARY | One of the first humans to reach the summit of Mount Everest (7) |
| SOUTHPOLE | The first humans to reach this extreme destination were Norwegian Roald Amundsen and his party on De |
| EUROPA | Moon of Jupiter discovered by Galileo in 1610, the sixth-largest moon in the Solar System (6) |
| SATURN | Planet first seen by Galileo in 1610 |
| CALLISTO | Moon of the planet Jupiter, discovered in 1610 by Galileo Galilei (8) |
| OMAGH | County town in Northern Ireland (pop about 20,000), founded in 1610 (5) |
