Seton Science 6 Quarter 4 Part I

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Across
  1. 6. This planet is an ice giant, is the densest of the giant planets, and has a vivid blue color
  2. 7. Is called the red planet because its surface is covered by rust
  3. 8. These planets are Ceres, Pluto, Eris, Haumea, and Makemake
  4. 10. Nicolas ___ developed the heliocentric model of the solar system
  5. 13. Johannes ___ developed the Three Laws of Planetary Motion
  6. 14. __ giant is a planet with no known solid surface
  7. 16. Galileo ___ confirmed the heliocentric model of the solar system using his telescope
  8. 17. ___ space is the region outside the heliosphere, literally the space among the stars
Down
  1. 1. ___ Belt is the roughly circular region in space, past the planet Neptune, home to millions of icy objects that orbit the sun
  2. 2. Has an extraordinary 97.77 degree tilt on its axis, basically orbiting the sun by rolling on its equator
  3. 3. The second brightest object in the night sky, after the moon
  4. 4. Sometimes called a space rock
  5. 5. A gas giant and the Jovian planet closest to the sun
  6. 7. The smallest and quickest of the planets
  7. 9. A __ year is the distance that light, traveing at 300,000 kilometers per second, travels in one year
  8. 10. Short period ___ are believed to originate in the Kuiper Belt, beyond Neptune, home to millions of icy objects that orbit the sun
  9. 11. A gas giant and the second largest planet in the solar system
  10. 12. Has made it through the Earth's atmosphere and landed on the Earth's surface
  11. 15. ___ planets are celestial bodies known to ancient stargazers, who could see them in the night sky with their naked eyes