Across
- 3. the bowl-shaped depression around the orifice of a volcano ; a depression formed by an impact (as of a meteorite)
- 4. a coherent, typically large body of matter with no definite shape
- 8. a conception of or belief about something
- 10. the outside part or uppermost layer of something (often used when describing its texture, form, or extent)
- 14. the branch of science which deals with celestial objects, space, and the physical universe as a whole
- 15. Way is the galaxy that includes our Solar System; a broad band of light that can be seen in the night sky and that is caused by the light of a very large number of faint stars
- 17. a violent and destructive shattering or blowing apart of something, as is caused by a bomb
- 18. a celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun
- 20. a scientist who studies the stars, planets, and other natural objects in space
- 22. facts, information, and skills acquired by a person through experience or education; the theoretical or practical understanding of a subject
- 26. system the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets
- 27. a substance or matter in a state in which it will expand freely to fill the whole of a container, having no fixed shape (unlike a solid) and no fixed volume (unlike a liquid)
- 28. a part or aspect of something abstract, especially one that is essential or characteristic
- 29. a principle or standard by which something may be judged or decided
Down
- 1. the force that attracts a body toward the center of the earth, or toward any other physical body having mass
- 2. a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction
- 5. a continuous area or expanse which is free, available, or unoccupied
- 6. the process or result of joining two or more things together to form a single entity
- 7. the center or most important part of something
- 9. a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matte
- 11. all existing matter and space considered as a whole; the cosmos
- 12. an area or stretch of land having a particular characteristic, purpose, or use, or subject to particular restrictions
- 13. the action or process of moving or being moved
- 16. the alternate rising and falling of the sea, usually twice in each lunar day at a particular place, due to the attraction of the moon and sun
- 19. the matter from which a thing is or can be made
- 21. the natural satellite of the earth, visible (chiefly at night) by reflected light from the sun
- 23. the strength and vitality required for sustained physical or mental activity
- 24. any of the small rocky celestial bodies found especially between the orbits of Mars and Jupiter
- 25. a small, thin piece of something cut or split off a larger piece