The sun’s outer atmosphere resembles a pufferfish.

Learn what the first maps of the sun's atmospheric boundary reveal about solar wind and its escape into space. The sun keeps a tight rein on everything in the Solar System, but it isn’t always the ...

Far above the Sun’s bright surface, a steady stream of charged particles accelerates into space. This outflow, known as the solar wind, starts nearly motionless and then races outward at hundreds of ...

Using the combined might of spacecraft scattered across the Solar System, scientists have built the most detailed map yet of the boundary where the Sun's magnetic push no longer accelerates the solar ...