Space Exploration

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Across
  1. 3. An artificial or natural object that orbits a planet.
  2. 4. A massive, luminous sphere of plasma held together by gravity.
  3. 5. A cloud of gas and dust in space, often a region where new stars are born.
  4. 7. Hole A region of space with a gravitational field so intense that no matter or light can escape.
  5. 8. A small body of matter from outer space that enters the Earth's atmosphere, becoming incandescent as a result of friction.
  6. 9. An icy celestial body that, when passing close to the sun, heats up and displays a visible atmosphere and sometimes a tail.
Down
  1. 1. A vast collection of stars, dust, and gas bound together by gravity.
  2. 2. A celestial body orbiting a star, large enough to be rounded by its own gravity.
  3. 4. System A star and all the objects that orbit it, including planets, moons, asteroids, and comets.
  4. 6. A small rocky body orbiting the sun, mostly found between Mars and Jupiter.