space

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Across
  1. 2. has an event horizon
  2. 5. was a three-part spacecraft
  3. 6. ring of icy bodies just outside of Neptune’s orbit
  4. 8. frozen core called the nucleus. This ball of dust and ice is usually less than 10 miles
  5. 10. takes about 305 Earth years for this dwarf planet to make one trip around the Sun.
Down
  1. 1. the biggest explosion that humans have ever seen
  2. 3. formed when an object like an asteroid or meteorite crashes into the surface of a larger solid object like a planet or a moon
  3. 4. was reclassified from a planet to a dwarf planet
  4. 7. is the largest object in the asteroid belt between Mars and Jupiter
  5. 9. an oval-shaped dwarf planet that is one of the fastest rotating large objects in our solar system