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Across 3. fate of the largest mass stars; gravity so strong, even light rays cannot escape 5. meteor of adequate size to survive Earth's atmosphere and strike our surface 8. Kansas astronaut from Salina, KS 9. Pioneer in study of earth, moon, sun, and their interrelationships 11. most accepted theory of beginning of universe from scientific evidence & speculation 12. Our Sun and all objects which revolve around it through time 14. frigid cold; perturbations led to discovery of Neptune; 2X our distance from Sun 21. Most likely, the fate of our Sun in about 5 billion years from today 22. eclipse in which the Earth blocks the Sun's light from striking our Moon 23. orbiting telescope deployed in 1990; source of many of our most prized images of space 25. most determining factor in prediction of star's "life-cycle"; original amount of matter 26. First human to set foot on our Moon; 7-20-1969; Apollo 11 mission 29. known for extensive ring system; least dense of all planets; 24 known moons 31. day is longer than its year; no moons; thick, toxic atmosphere; evening "star" 32. quasi-stellar radio sources; brightest objects in universe; remnants of "big bang"? 33. only astronomical body supporting life as we know it; amazing, awesome!

Down 1. until 2008, was considered to be our ninth and outermost solar system planet 2. Pluto is the "king'. TNO's; many comets originate here; outside Neptune's orbit 4. belt of rock/mineral particles orbiting between Mars & Jupiter; Ceres is largest 5. the galaxy to which we belong; estimated over 200 million stars in our galaxy 6. source of many long-term comets; trillions of comets possible here 7. larger than all other planets combined; gas giant; one day is only 10 hours! 10. reaction initiates "birth" of star; fusion of hydrogen to helium; at least 10 million K 13. Kansas astronaut from Chapman, KS 15. eclipse in which our Moon blocks our Sun's light from striking Earth 16. acronym for National Aeronautic & Space Administration 17. famous comet with 76 year cycle of revolution around our Sun 18. closest planet to Sun; no atmosphere; no moons; erratic temperatures 19. chunk of asteroid material being attracted to Earth by gravity 20. water discovered on surface; reddish soil; 2 moons; "Olympus Mons" 24. Kansas astronaut from Topeka, KS 25. when asteroid chunk enters Earth's atmosphere and begins to "burn-up"; shooting star 27. its largest moon, Triton, has liquid nitrogen geysers; may have 11 moons 28. Greek/Latin name for our Moon 30. means "new star" event; actually gigantic explosion which may repeat periodically