Space

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Across
  1. 3. the planet is nicknamed the red planet
  2. 5. was a planet but is no longer
  3. 7. a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity
  4. 8. this planet is the last planet in our solar system
  5. 9. A day on this planet is longer than a year.
Down
  1. 1. regions in space where an enormous amount of mass is packed into a tiny volume.
  2. 2. the planet is nicknamed mostly made of metal
  3. 4. a 4.5 billion-year-old yellow dwarf star – a hot glowing ball of hydrogen and helium – at the center of our solar system.
  4. 5. there are seven of these in the solar system
  5. 6. this planet has rings of space debris
  6. 10. this planet is a habitable for creatures