Space

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Across
  1. 4. Cloud of gas and dust in space, often star-forming regions.
  2. 6. Bright streak of light caused by a meteoroid burning in Earth's atmosphere.
  3. 11. Object that orbits a planet or star, often man-made.
  4. 13. Person trained to travel and work in space.
  5. 14. Russian astronaut trained for space missions.
  6. 15. Bang The theory that universe began from an initial singularity.
Down
  1. 1. Vehicle designed for travel or operation in space.
  2. 2. Planet outside our solar system orbiting another star.
  3. 3. Instrument for observing distant objects in space.
  4. 5. Path an object takes around a star or planet.
  5. 7. System Sun and all objects bound to it by gravity.
  6. 8. Massive system of stars, gas, and dust bound by gravity.
  7. 9. Small rocky body orbiting the Sun, mostly between Mars and Jupiter.
  8. 10. Icy object with a tail that develops when near the Sun.
  9. 12. Hole Region of space with gravity so strong nothing can escape.