Without the sun, life on Earth would be impossible. It provides food for the plants that feed us, and warmth so that we don’t freeze to death. But the sun has a dark side. It is, after all, a giant ball of fire in the sky, whose 27 million degree Fahrenheit surface is tossed about by burning tsunami waves 62,000 miles high. And at pretty much any point, it could burp out rivers of charged particles that could paralyze technology on Earth.