Astronomy cross word puzzle

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Across
  1. 2. Physics of the sun and its connection with the solar system.
  2. 4. A branch of space science that applies the laws of physics.
  3. 6. The science of measuring visible light.
  4. 7. Study of oscillations
  5. 8. The study of the absorption and emission of light.
Down
  1. 1. The science of positional astronomy
  2. 3. Study of the structure and dynamics of the sun.
  3. 5. The science of the origin and development of the universe.