Across
- 4. - Moment when day and night share equal hours.
- 8. - Curved path of a celestial body around a star.
- 9. - Silent empty space stretching between distant star systems.
- 11. - Passing shadow of a moon across a sun or planet.
- 13. - Spinning neutron star sending out regular radio pulses.
- 14. - Massive stellar explosion scattering bright stardust.
Down
- 1. - Lowest point directly underneath your feet in space.
- 2. - Imaginary point directly overhead in the night sky.
- 3. - Longest or shortest day of the year in planetary cycles.
- 5. - Perfectly round planetary shape spinning in the dark.
- 6. - Giant colorful cloud of interstellar gas and dust.
- 7. - The entire orderly universe stretching out infinitely.
- 10. - Round impact basin formed on ancient moon surfaces.
- 12. - Extremely distant and bright celestial energy source.