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NASA's SDO captures image of mid-class solar flare


The sun emitted a mid-level solar flare, peaking at 10:58 a.m. EDT on Sept. 28, 2015. NASA's Solar Dynamics Observatory, which watches the sun constantly, captured an image of the event.

Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground, however -- when intense enough -- they can disturb the atmosphere in the layer where GPS and communications signals travel.

NASA's Solar Dynamics Observatory captured this image of a solar flare -- as seen in the bright flash in the lower right hand side of the sun -- on Sept. 28, 2015. The image shows a subset of extreme ultraviolet light that highlights the extraordinarily hot material in flares and which is typically colorized in red.

Credits: NASA/SDO

To see how this event may affect Earth, please visit NOAA's Space Weather Prediction Center at, the U.S. government's official source for space weather forecasts, alerts, watches and warnings.

This flare is classified as an M7.6 flare. M-class flares are a tenth the size of the most intense flares, the X-class flares. The number provides more information about its strength. An M2 is twice as intense as an M1, an M3 is three times as intense, etc.

Updates will be provided as needed.

Susan Hendrix | EurekAlert!

Further reports about: Goddard Space Flight Center NASA SDO Space Weather flares solar flare

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