Across
- 6. a celestial body moving about the sun,
- 8. any of various groups of stars to which definite names have been given
- 10. an optical instrument for making distant objects appear larger and therefore nearer.
- 12. any of the large, self-luminous, heavenly bodies
- 13. the gaseous envelope surrounding a heavenly body
- 15. any of the small bodies, often remnants of comets, traveling through space
- 16. any of millions of small celestial objects revolving around the sun, often irregularly shaped and having a great range in size
- 17. a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space.
Down
- 1. a spherical celestial body revolving about the sun, similar to a planet but not large enough
- 2. the obscuration of the light of the sun by the intervention of the moon between it and a point on the earth
- 3. a mass of stone or metal that has reached the earth from outer space; a fallen meteoroid.
- 4. a theoretical massive object, formed at the beginning of the universe
- 5. the obscuration of the light of the moon by the intervention of the earth between it and the sun
- 7. the earth's natural satellite, orbiting the earth
- 9. any of the eight large heavenly bodies revolving about the sun
- 11. the explosion of a star,
- 14. a meteoroid that has entered the earth's atmosphere.