Mystery #2Tier 2Earth / space
Why is summer warmer than winter?
It seems obvious that summer must be when Earth is closest to the Sun. But here's the twist: when it's summer for you, it's winter on the other half of the planet at the very same time — and Earth is actually slightly farther from the Sun during northern summer. So if it isn't distance, what makes summer hot?
Your guess
What's your hunch — what really makes summer warmer than winter? (Careful: it isn't being closer to the Sun.)
Make a guess to unlock the hints and the answer.