NASA's space observatory captured a stunning solar explosion, showing the moment a massive flare erupted from the fiery star. A solar flare is a sudden burst that increases the brightness of the sun, typically observed near its surface and close to sunspot groups. Coronal mass ejections often accompany strong flares, though not always. Even the strongest explosions are barely detectable within the total solar irradiation. Solar flares are closely linked to the ejection of plasma and particles from the sun's corona into outer space, emitting radio waves abundantly. If the emissions are directed towards Earth, the associated particles can penetrate the upper atmosphere (the ionosphere) and cause bright auroras, while also potentially disrupting long-range radio communications. It usually takes days for solar plasma bursts to reach Earth. These explosions also occur on other stars, where the term stellar flares applies. High-energy particles, which may be relativistic, can arrive almost simultaneously with the electromagnetic radiation.