Astronomy Vocabulary - Part 1

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Across
  1. 4. the scientific study of the universe
  2. 8. a telescope that uses a set of lenses to gather and focus light from distant objects
  3. 9. the line where the sky and the Earth appear to meet
  4. 10. the point in the sky directly above an observer on Earth
  5. 12. a telescope that uses a curved mirror to gather and focus light from distant objects
Down
  1. 1. all of the frequencies or wavelengths of electromagnetic radiation
  2. 2. the distance that light travels in one year; about 9.46 trillion kilometers
  3. 3. a region of the sky that contains a recognizable star pattern and that is used to describe the location of objects in space
  4. 5. an instrument that collects electromagnetic radiation from the sky and concentrates it for better observation
  5. 6. the angle between an object in the sky and the horizon
  6. 7. the study of the origin, properties, processes, and evolution of the universe
  7. 11. the theory that all matter and energy in the universe was compressed into an extremely small volume that 13 billion to 15 billion years ago exploded and began expanding in all directions