What Causes a Planet to Be ‘Alive’ or ‘Dead’?

Imagine a planet like Earth, where it's just right, not too hot, not too cold. That’s what makes it 'alive'. But if a planet is too close to its star, it gets too hot, and all the water disappears. If it's too far away, it freezes over. That makes it ‘dead’.

Take the quiz →

Examples

  1. A planet too close to its star is like a pizza that's been in the oven too long, everything burns up.
  2. A planet too far from its star is like a frozen soda can, nothing moves or changes.
  3. Earth is just right, like a perfectly cooked steak, not too hot, not too cold.

Ask a question

See also

Discussion

Recent activity

Nothing here yet.