NASA’s SDO Reveals Images of X4.9-Class Solar Flare

SDO Views X Class Solar Flare

2014. This composite image, captured at 7:59 p.m. EST, shows the sun in X-ray light with wavelengths of both 131 and 171 angstroms. Credit: NASA/SDO

NASA’s Solar Dynamics Observatory viewed a significant solar flare, classified as a X4.9-class flare, on February 24, 2014.

The sun emitted a significant solar flare, peaking at 7:49 p.m. EST on February 24, 2014. NASA’s Solar Dynamics Observatory, which keeps a constant watch on the sun, captured images of the event.

Solar flares are powerful bursts of radiation, appearing as giant flashes of light in the SDO images. 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.

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

SDO Shows the First Moments of an X Class Flare

These SDO images from 7:25 p.m. EST on February 24, 2014, show the first moments of an X-class flare in different wavelengths of light – seen as the bright spot that appears on the left limb of the sun. Hot solar material can be seen hovering above the active region in the sun’s atmosphere, the corona. Credit: NASA/SDO

This flare is classified as an X4.9-class flare. X-class denotes the most intense flares, while the number provides more information about its strength. An X2 is twice as intense as an X1, an X3 is three times as intense, etc.

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