Across
- 1. Small pieces of rock flying through space ranging in size from sand grains to cars
- 4. STAR The extremely dense remnant left behind after a supernova explosion
- 5. The apparent path that the Sun moves along in the sky
- 9. Optical telescope that uses curved mirrors to gather and focus light
- 11. Unofficially recognized star patterns within or between constellations such as the Big Dipper
- 12. A catastrophic stellar explosion caused by the sudden core collapse of a massive star
- 14. An Earth-centered model of the universe proposed by Aristotle
- 17. The process inside a star core where hydrogen transforms into helium
- 20. The highest point in the sky directly overhead
- 22. The cargo carried by a rocket including crew cabin food water and equipment
- 24. The oval-shaped orbital paths that planets follow around the Sun
- 26. Small rocky or metallic bodies traveling through space
- 30. The two times of year when day and night are equal in length occurring in spring and fall
- 31. The apparent shift in position of an object when viewed from two different locations
- 32. An orbit where a satellite moves at the exact same speed as Earth rotation
- 34. HOLE A leftover stellar core with gravity so powerful that not even light can escape
- 35. Compass direction of a celestial object measured in degrees clockwise starting from north
- 36. YEAR The distance that light travels through space in one full year
- 37. A piece of space rock that enters Earth atmosphere and glows due to friction
- 39. Robotic arm developed by Canada and used on space shuttle missions
- 40. Outer planets that are large gaseous and located far from the Sun
Down
- 2. Technique of combining multiple telescopes together for greater clarity and resolution
- 3. The height of a celestial object in the sky measured in degrees above the horizon
- 6. A Sun-centered model of the solar system suggested by Copernicus
- 7. The two times of year when the Sun reaches its highest or lowest point in the sky marking summer and winter
- 8. A meteor that survives its journey through Earth atmosphere and strikes the ground
- 10. Geometry method used to calculate unknown distances by measuring angles along a baseline
- 13. Inner planets that are smaller rockier and closer to the Sun
- 15. Massive accumulations of gas and dust in space where new stars are born
- 16. Natural or human-made objects that orbit around a larger body in space
- 18. Instrument used to analyze star light and determine the elemental composition of stars
- 19. Massive collections of millions or billions of stars gas and dust held together by gravity
- 21. UNIT The average distance from the center of the Earth to the center of the Sun
- 23. GIANT The expanded stage of a sun-like star as its helium core heats up
- 25. A tightly compressed cloud of gas and dust that glows before nuclear fusion begins
- 27. Optical telescope that uses glass lenses to gather and focus starlight
- 28. A hot glowing ball of hydrogen gas that produces light energy
- 29. Officially recognized groupings or patterns of stars in the night sky
- 33. DWARF The small dense collapsing core leftover after a sun-like star stops fusion
- 37. The condition of weak gravitational force experienced by objects and humans in orbit
- 38. SUPERGIANT The expanded stage of a massive star when its fuel begins to run out
- 39. Bodies made of dust and ice that release gas tails when traveling near the Sun