Day Seven

3. relating to or resembling the moon
4. a space rock crashing through Earth's atmosphere
5. a sudden brief burst of bright flame or light
6. a star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass
10. the force that attracts a body toward the center of the earth, or toward any other physical body having mass
11. the universe seen as a well ordered whole
12. a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction
14. a close group
16. someone who studies outer space
20. relating to the universe or cosmos
21. a celestial body moving in an elliptical orbit around a star
22. a small rocky body that orbits something bigger than it
23. 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

1. a picture made out of stars seen in the night sky
2. relating to bodies outside of earth or that you see in the sky
7. someone who travels into space
8. all existing matter and space considered as a whole; the cosmos
9. the time or date (twice each year) at which the sun reaches its maximum or minimum declination, marked by the longest and shortest days
12. relating to a galaxy or galaxies
13. the study of the universe and everything in it
15. the degree of compactness of a substance
17. the curved path of a celestial object or spacecraft around a star, planet, or moon
18. an obscuring of the light from one celestial body by the passage of another between it and the observer
19. relating to the Sun