Mystery #2Tier 2worlds for life
What would a faraway planet need to have a real chance of life?
We have now found thousands of planets circling other stars. Most are scorching hot, or frozen solid, or crushed under thick poisonous air. Only a rare few might be gentle enough for living things. So what would a faraway planet actually need to stand a real chance of life?
Your guess
What do you think makes one planet a good home for life while another has none?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.