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The ionosphere is the part of the upper atmosphere where we see the aurora. It’s important because it affects radio signals in ways that can either enhance or degrade our ability to communicate and navigate. For example, the BBC world service is broadcast using high-frequency (HF) radio signals. What isRead More →

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10 Things to Know About the Ionosphere It’s home to all the charged particles in Earth’s atmosphere. … The ionosphere is where Earth’s atmosphere meets space. … It changes — sometimes unpredictably. … It’s home to many of our satellites. … Disturbances there can disrupt signals. … It’s influenced byRead More →