Interstellar Quest

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Across
  1. 4. The second-largest moon of Saturn, known for its icy surface.
  2. 5. The fastest-spinning planet in the solar system.
  3. 6. The spacecraft that successfully landed on Titan, a moon of Saturn.
  4. 7. Dwarf planet formerly known as the ninth planet.
  5. 8. The hottest planet in the solar system
Down
  1. 1. The spacecraft that provided the first close-up images of Jupiter's moons.
  2. 2. The hypothetical celestial object believed to be the opposite of a black hole, emitting rather than absorbing matter and light
  3. 3. The point in a planet's orbit where it is closest to the sun.