GSW Cosmology Crossword

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Across
  1. 4. An ancient model of the cosmos that places the Earth at the center of the universe, with all celestial objects, including the Sun and planets, orbiting around it.
  2. 11. The process by which two or more atomic nuclei come together to form a single, more massive nucleus, releasing a tremendous amount of energy. This is the process that powers stars, including our Sun.
  3. 12. The process in which the nucleus of an atom splits into two or more smaller nuclei, accompanied by the release of energy. Nuclear reactors and atomic bombs operate based on fission.
  4. 13. A powerful and explosive event that occurs when a massive star reaches the end of its life cycle and undergoes a catastrophic collapse and explosion, briefly outshining entire galaxies.
  5. 14. A vast cloud of gas and dust in space, where new stars are often born or where old stars can release their outer layers.
Down
  1. 1. The scientific study of the origin, evolution, structure, and eventual fate of the universe as a whole.
  2. 2. The displacement of spectral lines in the light emitted by distant objects in the universe, indicating that these objects are moving away from us. This is a key piece of evidence for the expansion of the universe.
  3. 3. The point in an object's orbit around the Sun when it is farthest from the Sun.
  4. 5. The point in an object's orbit around the Sun when it is closest to the Sun.
  5. 6. An astronomical event that occurs when one celestial object, such as a planet or moon, moves into the shadow of another celestial object, causing a temporary blocking of light.
  6. 7. The modern astronomical model that places the Sun at the center of the solar system, with the planets, including Earth, orbiting around it.
  7. 8. The outermost layer of the Sun's atmosphere, visible during a total solar eclipse as a faint, pearly-white halo of plasma and gas.
  8. 9. An extremely bright and energetic object at the center of a galaxy, powered by a supermassive black hole.
  9. 10. A group of stars that forms a recognizable pattern or shape in the night sky, often with a historical or mythological significance.