Thanks for sharing story suggestions Deirdre,
looks good for introducing the idea that planets can be quite different depending on their distance from their star.
We did a session on this with second level teachers as part of one of our teacher conferences with Dr Elizabeth Tasker – she added that in addition to the distance from the star, you need to consider what the planet is ‘wearing’ – as in, some planets have thick atmospheres, which keep heat in, and some have thin atmospheres which let heat out.