Habitable Zone

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Across
  1. 2. The sweet spot a planet's orbit must lie for it to be considered livable
  2. 6. In order for a planet to be considered "habitable", it's surface must have enough _____________ to reflect just the right amount of incoming radiation.
  3. 8. In order for a planet to be considered "habitable", it must have a year round safe ____________________.
  4. 9. In order for a planet to be considered "habitable", it must be a certain _____________ from its host star.
Down
  1. 1. The system of Earth that contains all living things
  2. 3. In order for a planet to be considered "habitable", it must not experience a fatal amount of incoming ____________.
  3. 4. In order for a planet to be considered "habitable", its host star's ___________ affects how much distance between the two is considered safe.
  4. 5. In order for a planet to be considered "habitable", it must have liquid ____________ on the surface.
  5. 7. In order for a planet to be considered "habitable", it must have _____________ in its atmosphere.