A geomagnetic storm is what happens when the Sun's activity, in the form of a coronal mass ejection (CME), finally reaches Earth and pushes back against the planet's own magnetic field. The mechanics of that arrival, how a CME's magnetic field lines up against

Not every eruption from the Sun is made only of radiation. Some are made of matter. When the Sun ejects billions of tonnes of its own material into space, we call it a coronal mass ejection, or CME. Most of the time this cloud drifts off harmlessly in some other

Not all disasters begin on Earth. The Sun has a temper. When it flares, the Earth feels it. One minute everything is fine. Then, in a flash lasting mere minutes, the Sun releases more energy than a billion nuclear bombs. We call it a solar flare. What is a Solar

Have you come across a real telescopic image of the Sun, and noticed dark patches scattered across its surface? If you have, you were looking at sunspots. And before you ask, no, the Sun is not bruised. Not spotty either. Well, actually, a little spotty. What exactly are sunspots? Sunspots