| Answer | Crossword Clue |
|---|---|
| ETHER | Outer space alien and the girl (5) |
| astrochemistry | the study of molecules and radicals in outer space |
| astrodynamics | the science of the motion of bodies in outer space and the forces that act on them |
| spandrels | The almost triangular space between one side of the outer curve of an arch, a wall, and the ceiling or framework |
| astrodynamicist | one who studies astrodynamics, the science of the motion of bodies in outer space and the forces that act on them |
