Earth is once again in the firing line. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. AR3664 is no ordinary sunspot. The behemoth dark patch on ...

Like the number of sunspots, the occurrence of solar flares follows the approximately 11-year solar cycle. But as the current Solar Cycle 25 approaches its peak, how are the number of solar flares ...

Considered our solar system's largest explosive events, solar flares can sometimes be as strong as a billion hydrogen bombs. Those with enough energy output to rank as an X-class have the potential to ...