Tour of the Solar System

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Across
  1. 2. A moon that as far as we know is the only other object in our solar system with liquid on its surface.
  2. 4. An extremely large asteroid that was large enough to become spherical in shape but not clear its orbit making it a dwarf planet.
  3. 6. Jovian planet that is furthest from the sun. Consists mostly of various types of ice and light gasses.
  4. 9. One of the large Galilean Moons. Due to tidal forces it is incredibly volcanically active.
  5. 10. A region of smaller debris that separates the terrestrial planets from the Jovian.
  6. 12. The largest Galilean Moon (also the largest in the solar system). Larger than Mercury with its own magnetic field.
  7. 13. One of the moons that orbits Mars (starts with a "P")
  8. 15. Another of the Galilean Moons. Brightly lit craters suggest it may have ice just underneath its rocky surface.
  9. 18. A region of space beyond Neptune in which small icy objects orbit the sun - hundreds of thousand of object.
  10. 19. An object in our solar system that had sufficient mass to become spherical in shape, but could not clear debris from its orbit.
  11. 21. A Kuiper Belt Object (KBO) that is also a dwarf planet. A very distant chunk of ice.
  12. 22. Called "The Red Planet" due to high levels of iron oxide on the surface
  13. 23. A Jovian planet that "rolls" through its orbit because the poles are rotated almost entirely onto the plane of the ecliptic
Down
  1. 1. Plane of the ____________ - The imaginary disc that extends out from the equator of the sun. All planets are on this disc.
  2. 3. This is the dusty area surrounding the protostar during the initial formation of the planets.
  3. 5. Terrestrial planet with a runaway greenhouse effect. Sometimes called Earth's Twin.
  4. 7. A Galilean moon with an incredibly smooth surface suggesting it might have large liquid water oceans just under its surface.
  5. 8. The other moon that orbits Mars (starts with a "D")
  6. 11. The region well outside of the solar system in which long period comets originate.
  7. 14. Jovian planet with a density low enough that it would float on water.
  8. 16. The largest planet in the solar system.
  9. 17. Currently the theory for the origin of our solar system has it starting out as a cloud of dust. This is the name for the cloud of dust.
  10. 20. This is the stage a star is in while it is surrounded by an accretion disk. Undergoing nuclear fusion, but not stable.
  11. 22. Planet that is nearly tidally locked with the sun. Orbit and rotation take nearly the same amount of time.