http://www.newsweek.com/sunspot-ten-million-degrees-solar-flare-ar3098-1742447

A monster sunspot region around four times larger than the size of Earth has shot a 10 million-degree Celsius (18 million-degree Fahrenheit) solar flare at our planet.

The sunspot region, known as AR3098, has simmered on the surface of the sun for about five days. In that time it's become increasingly active, with solar scientists predicting a high chance of flares.