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NASA's SDO Sees a Solar Flare and a Lunar Transit
January 30, 2014


The sun emitted a mid-level solar flare, peaking at 11:11 a.m. EST on Jan. 30, 2014. Images of the flare were captured by NASA's Solar Dynamics Observatory, or SDO, shortly after the observatory witnessed a lunar transit.  The black disk of the moon can be seen in the lower right of the images.

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.

To see how this event may impact 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.

This flare is classified as an M6.6 class flare. Updates will be provided as needed.

Related Links

› Download high resolution media
› SDO Lunar Transit Feature
› Frequently Asked Questions Regarding Space Weather
› View Other Past Solar Activity

Karen C. Fox
NASA's Goddard Space Flight Center, Greenbelt, Md.

SDO captures this image of an M6.6-class solar flare on Jan. 30, 2014.
A solar flare erupts on Jan. 30, 2014, as seen by the bright flash on the left side of the sun, captured here by NASA's Solar Dynamics Observatory. In the lower right corner the moon can be seen, having just passed between the observatory and the sun.
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Page Last Updated: February 24th, 2014
Page Editor: Holly Zell