Mystery #2Tier 2heat, sun, radiation
How does the Sun's warmth reach you across space with almost nothing in between?
Step outside on a clear day and the Sun warms your face at once. Yet between you and the Sun lie millions of kilometres of empty space, with barely a scrap of air to carry anything along. So how does that warmth cross all that nothing to land on your skin?
Your guess
How do you think the Sun's warmth gets across all that empty space to you?
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.