Cfygff

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Across
  1. 6. an engine that provides thrust directly through the burning of its fuel without requiring the intake of air
  2. 7. the force that causes objects with mass to attract one another
  3. 11. Any of the large celestial bodies that revolve around the Sun in the solar system
  4. 12. relating to the land
  5. 13. a small object that enters Earth's atmosphere from space and burns due to friction, emitting light
  6. 14. move in an elliptical path around a center
Down
  1. 1. probe An unmanned spacecraft designed to explore the solar system and transmit data back to Earth
  2. 2. A celestial body of ice, dust, and rock with an elongated and elliptical orbit
  3. 3. National Aeronautics and Space Administration; the American governmental agency dedicated to space exploration
  4. 4. the whole mass of air surrounding a planet
  5. 5. A vehicle or device designed for travel or operation outside Earth's atmosphere
  6. 7. moons The four largest and brightest moons of Jupiter, which were discovered by Galileo Galilei: Ganymede, Io, Callisto, and Europa
  7. 8. To spin on an axis; the spinning of Earth on its axis that causes day and night to occur
  8. 9. Composition of outer planets whose atmosphere is made of gases
  9. 10. belt The region between the inner and outer planets where most asteroids orbit around the Sun
  10. 14. A vehicle for exploring the surface of an extraterrestrial body (such as the Moon and Mars)
  11. 15. The gravitationally-curved path of an object around a point in space