| Answer | Crossword Clue |
|---|---|
| ALPHACENTAURI | Star system closest to the sun |
| PROXIMA | ... Centauri (closest star to the sun) |
| ALPHACENTAURI | Closest star system to the solar system |
| ALPHACENTAURI | Star system closest to the solar system |
| PERIHELION | Orbit point closest to the sun |
| ICARUS | Asteroid with the closest approach to the sun |
