The Sun follows a 22-year magnetic cycle, with solar activity rising and peaking roughly every 11 years. But when conditions ...

For three decades, the Solar and Heliospheric Observatory (SOHO) has been our eyes on the Sun, unveiling mysteries of solar ...

A sunspot, potentially generating multiple solar flares, may lead to auroras that could be visible as far south as Alabama.

Solar flares and other activity can disrupt radio communications, power grids and navigation signals, according to NASA.

Scientists can usually spot coronal mass ejections before they affect Earth—but this one snuck past coronagraphs and ...

Massive solar flares, graceful eruptions of solar material, and an enormous sunspot make up some of the imagery captured by NASA's Solar Dynamics Observatory in 2013 and 2014. A year ago this weekend, ...

A powerful X1.9 solar flare from new sunspot AR4299 triggered strong radio blackouts, as giant sunspot AR4294 rotates into ...

Ancient Chinese astronomers observed a solar eclipse in 709 BCE with remarkable detail. These old records are now helping ...

A space and radiation expert is disputing Airbus' recent explanation of an in-flight incident that left at least 15 people ...

Researchers from HSE University and the Space Research Institute of the Russian Academy of Sciences analyzed seven years of data from the ERG (Arase) satellite and, for the first time, provided a ...

As this month's string of powerful X-class solar flares sparked brilliant auroras that lit up skies across an unusually wide swath of the globe—from northern Europe to Florida—researchers at NJIT's ...

Because this record survived, we know more about ancient Chinese history, the rotation of the Earth, and past solar activity ...