Scientists Present Best Images Yet of Ionosphere From Space

Fresh findings about the edge of Earth’s atmosphere are puzzling scientists affiliated with two missions that launched this year, and then some.

This zone, at an altitude of roughly 50 to 400 miles (80 to 645 kilometers), is full of strange physical phenomena that scientists are only beginning to understand. In the ionosphere, charged particles released by the sun interact with gases at the top of Earth’s atmosphere in intriguing ways.

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