Across
- 3. The sun and all of the bodies - planets, satellites, asteroids, comets, etc. that orbit around it
- 7. Everything that exists: the earth, the sun, the moon, satellite, asteroids, all the galaxies and the space between them
- 9. Chunks of rock that vary in size. They orbit the sun between the orbits of Mars and Jupiter
- 10. The motion of a planet, satellite, or the sun around its axis
- 12. a bright star known as the North Star or Polaris, that appears in the northern hemisphere
- 13. When meteoroid enters the earth's atmosphere creating a streak of light
- 16. A man-made or heavenly body that orbits around a larger object
- 18. Bright stars grouped according to the patterns they make in the sky
- 24. Meteors that fall to the surface of the earth
- 25. A straight line that an object or body rotates around or seems to rotate around
- 26. Objects that send or give out light
- 28. The four hard rocky planets (Mercury, Venus, Earth, Mars) closest to the sun
- 29. The time it takes for the moon to go around the earth
- 35. The motion of a planet along its orbit around the sun
- 36. Objects that reflect light
- 37. Stars that form patterns but are generally part of a constellation
- 38. A phase in the moon's cycle where more than half of the moon, but not the entire face of the moon is illuminated
- 39. When the moon gradually becomes less illuminated from a full moon to a new moon
Down
- 1. When the moon moves in front of the sun, partially or completely blocking it
- 2. The area between the inner and outer planets that is filled with asteroids
- 4. The time it takes for the moon to complete all of its phases
- 5. When the moon grows gradually more illuminated from a new moon to a full moon
- 6. These rocks, usually not much bigger than grains of sand, may have been swept off asteroids or comets. They also orbit the sun, sometimes entering the earth's atmosphere
- 8. Once a year the sun reaches its highest and lowest points in the northern hemisphere
- 11. The name of the satellite that orbits the earth
- 14. constellations that are visible in the Northern Hemisphere throughout earth's revolution around the sun
- 15. The closest star to the earth, measuring more than a million kilometers away
- 16. A gaseous body that produces its own energy through nuclear fusion, releasing it as light and heat
- 17. When the moon moves into the earth's shadow preventing sunlight from falling onto the moon's surface
- 19. Large bodies that can only be seen by reflected light, as they revolve around the sun
- 20. A large ball of ice, dust, rock and gas that orbits the sun circling the dark edges of the solar system
- 21. An imaginary circle around the centre of the earth
- 22. The four giant gaseous planets (Jupiter, Saturn, Uranus, Neptune) that orbit the sun
- 23. Twice each year when the sun crosses the celestial equator, when day and night are of equal length
- 27. A cycle which the moon appears in different forms as it revolves around the earth
- 30. The study of the Universe and all bodies (stars, planets, comets, galaxies) that appear in the sky
- 31. a scale used to measure the brightness of stars and other objects in the sky
- 32. A spiral island of stars in space. Our galaxy is called the Milky Way
- 33. The time it takes for a planet to orbit all the way around the sun. It takes 365 days for the earth to orbit around the sun
- 34. The phase of the moon when less than half of the moon is illuminated