Across
- 5. belt, a region of the solar system beyond the orbit of Neptune, believed to contain many comets, asteroids, and other small bodies made largely of ice.
- 7. a clockwork model of the solar system, or of just the sun, earth, and moon.
- 10. a caterpillar to butterfly.
- 11. a thing predicted; a forecast.
- 12. a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
- 13. a substance which does not readily allow the passage of heat or sound.
- 14. a small body moving in the solar system that would become a meteor if it entered the earth's atmosphere.
Down
- 1. an expert in or student of astronomy.
- 2. involving mutual assistance in working towards a common goal.
- 3. willing to take risks or to try out new methods, ideas, or experiences.
- 4. a small, slender tree-dwelling ape with long powerful arms and loud hooting calls, native to the forests of South-East Asia.
- 6. (of a person) making others work hard or meet high standards; not easily satisfied.
- 8. a great circle on the celestial sphere representing the sun's apparent path during the year, so called because lunar and solar eclipses can only occur when the moon crosses it.
- 9. a group of stars forming a recognizable pattern that is traditionally named after its apparent form or identified with a mythological figure.