Astronomy Picture of the Day

Visit the NASA/JPL website to view more Astronomy Pictures of the Day X-Class Flare Credit: NASA / Goddard / SDO AIA Team Explanation: On Valentine's Day (ET) the Sun unleased one of its most powerful explosions, an X-class flare. The blast was the largest so far in the new solar cycle. Erupting from active region AR1158 in the Sun's southern hemisphere,the flare is captured here in this extreme ultraviolet image from the Solar Dynamics Observatory (SDO). The intense burst ... Full Story