1. 2. A missile, spacecraft, aircraft or other vehicle that obtains thrust from a rocket engine.
  2. 5. Eruptions in the outer part of the Sun’s atmosphere.
  3. 8. A person that travels and works in space.
  4. 10. When our view of one object in the sky is blocked by either another object or the Earth’s shadow.
  5. 13. A celestial body moving in an elliptical orbit around a star.
  6. 14. A region of the Earth’s atmosphere.
  7. 16. A small, frozen mass of dust and gas orbiting the sun.
  8. 18. The point on the celestial sphere vertically above a given position or observer.
  9. 20. A small rocky body orbiting the sun.
  1. 1. A cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter.
  2. 3. The curved path of a celestial object or spacecraft around a star, planet, or moon, especially a periodic elliptical revolution.
  3. 4. The line at which the earth's surface and the sky appear to meet.
  4. 6. The amount of time it takes for the Earth to spin once on its axis.
  5. 7. A group of stars, gas and dust held together by gravity.
  6. 9. Allows people to look into space and see everything much bigger, and to observe the planets.
  7. 11. To change or cause to change into vapour or into the gaseous state.
  8. 12. A huge glowing ball of gas in outer space.
  9. 15. In the context of spaceflight, a satellite is an object which has been placed into orbit by humans.
  10. 17. A meteoroid that has entered the Earth's atmosphere, usually making a bright streak of light in the sky.
  11. 19. The edge of any object in outer space.