Jan. 13, 2015 (NASA) -- The sun emitted a mid-level solar flare, peaking at 11:24 p.m. EST on Jan. 12, 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.
An M-class solar flare erupts from the right side of the sun in this image from shortly before midnight EST on Jan. 12, 2015. The image blends two wavelengths of light -- 171 and 304 angstroms -- as captured by NASA's Solar Dynamics Observatory. Image Credit: NASA/SDO
To see how this event may affect Earth, please visit NOAA's Space Weather Prediction Center at http://spaceweather.gov, the U.S. government's official source for space weather forecasts, alerts, watches and warnings.
Giant magnetic loops dance on the sun’s horizon in concert with the eruption of a solar flare -- seen as a bright flash of light -- in this imagery from NASA’s Solar Dynamics Observatory, captured Jan. 12-13, 2015. Image Credit: NASA/SDOThis flare is classified as an M5.6-class 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.
What is a solar flare?
For answers to this and other space weather questions, please visit the Space Weather Frequently Asked Questions page.
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