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Tiny solar flares may explain the sun’s ridiculously hot atmosphere

The layers of the sun

New evidence suggests tiny solar flares heat the sun’s atmosphere to thousands of times the temperature of its surface.

Small loops of super hot plasma may underlie a mysterious feature of the sun: It’s outer atmosphere, or corona, is far hotter than its visible surface, called the photosphere. NASA recently announced the best evidence so far that nanoflares exist. These solar flares so small they aren’t detectable from Earth. The study results were published Oct. 9 in Nature Astronomy.

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Preparations begin for the Great American Solar Eclipse

Preparations begin for the Great American Solar Eclipse

Get the most out of next year’s once-in-a-lifetime experience

World’s largest space telescope completed

World’s largest space telescope completed

Webb will unveil cosmic wonders we’ve never seen before

Don’t blame it on tonight’s super-supermoon

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And there’s no way for you to know when it will start

Why fungi adapt so well to life in space

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In many ways, these little microbes are better prepared for space travel than we are

Space has weather, too

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Here’s how it affects you (and how we study it)

Can computers forecast avalanches better than humans digging holes?

Can computers forecast avalanches better than humans digging holes?

In the world of avalanche forecasting, manual methods are state of the art. But meteorologists are honing a computer model for the job