Image for Solar flare

The sun emitted a significant solar flare on October 19, 2014. NASA’s Solar Dynamics Observatory captured this image of the event in an extreme ultraviolet wavelength that can see the intense heat of a flare and that is typically colorized in teal. 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.