Across
- 2. - small pieces of rocks flying through space with no particular path
- 4. - vast clouds of gas and dust in space
- 9. - used for centuries to make accurate charts of star positions
- 11. - a vehicle used for travelling or carrying things into space, which is shaped like a big tube
- 14. - proposed by Nicolas Copernicus
- 15. - measures a star’s height above the horizon
- 16. - an enormous explosion that marks the death of a massive star
- 20. - comes from Latin meaning sun and stop
- 21. - based on the geometry of a triangle
- 22. - a meteor that lasts long enough to hit Earth’s surface
- 24. - proposed by Aristotle
- 25. - Russian word for satellite
Down
- 1. - an optical instrument that makes far away objects look closer by using a special arrangement of lenses and mirrors
- 3. - grouping of millions or billions of stars, gas, and dust
- 5. - comes from Latin meaning equal and night
- 6. - the apparent shift in position of a nearby object when the object is viewed from two different places
- 7. - groupings of stars we see as patterns in the night sky
- 8. - hot, glowing ball of gas that gives off tremendous light energy
- 10. - the intrinsic brightness of a celestial object
- 12. - the only planet where water exists in all three phases: solid, liquid, and gases
- 13. - objects that are built and sent to Earth’s orbit by humans
- 17. - the asteroid that is only 33km long and 13 km wide
- 18. - “dirty snowballs”
- 19. - so-called “shooting stars” that can often be seen streaking across the night sky
- 23. - refers to the highest point directly overhead