In what we can only interpret as a show of solidarity for the Solar System's beleaguered dwarf planet Pluto, the Sun put its heart prominently on its sleeve atmosphere. On the side of the Sun facing ...

A giant hole has opened in the atmosphere of the Sun, and it's blasting out a high-speed wind that is directed right at Earth. The incoming blast of solar particles is worth getting excited about: ...

The sun is the star at the center of our solar system. It's the largest, brightest and most massive object in the solar system, and it provides the light and heat that life on Earth depends on.