Space stuff

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Across
  1. 2. The dark central part of a sunspot.
  2. 3. Either of the two days of the year on whichneither hemisphere is tilted or away from the sun.
  3. 5. The part of a shadow surrounding the darkest part.
  4. 6. A streak of light in the sky produced by the burning of a meoroid in Earth's atmosphere.
  5. 8. The blocking of sunlight to Earth that occurs when the moon is directly between the sun and Earth.
  6. 10. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon.
  7. 11. One of the different apperant shapes of the moon as seen from Earth.
  8. 13. The force by which a planet or other body draws objects toward its center.
  9. 17. An object that orbits a planet
  10. 18. The action of rotating around an axis or center.
  11. 19. The path of an object as it revolves aroung another object in space.
  12. 20. A pattern or grouping of stars that people imagine to represent a figure or an object.
  13. 22. A chunk of rock or dust 9n space, generally smaller than an asteroid.
  14. 23. The tide with the least difference between consecutive low and high tides.
  15. 25. A system of organizing time that defines the beginning, length, and divisions of a year.
  16. 26. A ball of hot gas, primarily hydrogen and helium, that undergoes nuclear fusion.
Down
  1. 1. The scientific law that states that every object in the universe attracts every other object.
  2. 4. An object that orbits a star and is large enough to become rounded by its own gravity.
  3. 7. The alternate rising and falling of the sea, usually twice in each lunar day at a particular place, due to the attraction of the moon and sun.
  4. 9. A large round pit caused by the impact of a meteoroid.
  5. 12. The partial or total blocking of one object in space by another.
  6. 14. When the sun reaches its highest or lowest point in the sky at noon, marked by the longest and shortest days.
  7. 15. An imaginary line that passes through a planet's center and its north and south poles, about which the planet rotates.
  8. 16. The curved path of a celestial object or spacecraft around a star, planet, or moon, especially a periodic elliptical revolution.
  9. 20. A loose collection of ice and dust that orbits the sun, typically in a long, narrow orbit.
  10. 21. The tide with a buldge in the middle and arms that spiral outward in a pinwheel pattern.
  11. 24. Dark, flat areas if the moon's surface formed from huge ancient lava flows.