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28: Listen to AM radio from the other side of the world

At night, low-frequency radio waves can travel further around the world, because they're reflected by the layers of the ionosphere! There's something magical about this.

I put my antenna outside, and I can hear *a lot* of broadcasting stations! On https://www.short-wave.info, you can look up where they are located.

Some stations in China are broadcasting with very high power! Some are over 7500 km away.

Wow. It's full of stars! 🌌