Space

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Across
  1. 1. The first spacecraft.
  2. 3. NASA's mission to Saturn.
  3. 6. The last planet in the solar system.
  4. 7. The name of the mission which sent humans to the moon.
  5. 8. A cloud of icy objects at the end of the solar system.
Down
  1. 2. A gassy giant at the end of the solar system.
  2. 4. The place where the Sun's protective layer from the dangers of interstellar space ends.
  3. 5. The mission which sent spacecrafts past the solar system