Stability of Planetary Orbits

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Across
  1. 3. The second smallest planet in the Solar System that may crash into the Earth in a few million years
  2. 4. In order for Neptune to exist the planet would had to __________.
  3. 6. A description of what could possibly happen.
  4. 7. This theory supports the idea of Accretion during our solar system's formation
  5. 8. The addition of this component turns the Theory of Special Relativity to General Relativity.
Down
  1. 1. disaster
  2. 2. Roman god of light, name of a planet in our solar system.
  3. 3. One of two planets that may crash into the Earth according to simulations.
  4. 5. The cause to a lack of steadiness
  5. 6. Tests that help support or debunk theories and scientific ideas.