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Radio waves aren’t sound. They’re electromagnetic radiation and essentially a type of invisible light. Radio astronomer Nicole Gugliucci joins us to explain how it's used to observe the formation of galaxies, black holes and other objects in outer space. Then, Gillian and Diona go on a field trip to see a meteor shower! It’s pretty much a disaster, but kind of hilarious and most definitely a blast. Stick around until the very end for an important announcement.

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