Sun emits first `X-class` solar flare of 2014

The sun emitted it`s first `X-class` solar flare of 2014 at 1:32 pm EST on Tuesday.

Why the sun’s shape is almost perfectly round

Researchers have used the Helioseismic and Magnetic Imager (HMI) onboard the Solar Dynamics Observatory satellite to obtain what they believe is the definitive and baffling answer about the slightly flattened surface of the sun.