[NASA] Strong Solar Flare

[SpaceMan 0]

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NASA’s Solar Dynamics Observatory captured this image of a solar flare — seen as the bright flash toward the upper middle — on Feb. 4, 2026. The image shows a subset of extreme ultraviolet light that highlights the extremely hot material in flares and which is colorized in blue and red.

NASA/SDO

This Feb. 4, 2026, image from NASA’s

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(SDO) captures a strong solar flare erupting from the star. Solar flares are powerful bursts of energy that can, along with other types of solar eruptions, can impact radio communications, electric power grids, navigation signals, and pose risks to spacecraft and astronauts. The flare pictured was classified as an X4.2 flare. X-class denotes the most intense flares, while the number provides more information about its strength.

SDO measures the Sun’s properties and solar activity to help us better understand the Sun’s magnetic changes. By studying flares and how they affect our planet and nearby space, SDO helps us to better prepare for and deal with these potential disruptions.

Image credit: NASA/SDO

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