NASA's Solar Dynamics Observatory captured sunspot AR3386 blast a long-duration X1.6-class solar flare and X1 flare. See time ...

Space, with its vastness and beauty, also hides potential threats that could spell disaster for humanity. While many cosmic ...

Solar flares and other solar activity, such as solar storms, are only expected to become more common by 2025 as the Sun reaches the height of its 11-year cycle, known as the solar maximum.

The latest solar flare follows an M-class one, the second-highest on the scale, that occurred days earlier on June 15. It caused a shortwave radio blackout across North America, with a loss of signal ...

Solar flares and other solar activity, such as solar storms, are only expected to become more common by 2025 as the Sun reaches the height of its 11-year cycle, known as the solar maximum.

At 12:02 p.m. Eastern time on Thursday, a massive X-class solar flare — the strongest kind — launched off the sun. It was the most intense of the sun’s current 11-year cycle, and the most ...

The solar flare, which is a sudden, bright explosion of electromagnetic energy, measured as an M4.4 on the scale astronomers use for sun storms.M-class flares are medium-sized eruptions (compared ...

Sunspot AR3663 released an X4.5-class solar flare on May 6, after a series of three other X-clas solar flares in the days prior.

The strongest solar flare in half a decade just launched off the sun from the same sunspot group that triggered dazzling auroras last weekend. But don't expect northern lights this time around.

Solar flares are closely related to another solar phenomenon called a coronal mass ejection, or CME. Where there's a flare, there's likely to be a CME, just like where there's smoke there's fire.

On April 8, there was just one minor C-class solar flare that ended several hours before totality began anywhere in the U.S., and it did not launch a CME, according to SpaceWeatherLive.com.

Solar flares are categorized as small C-class flares, medium-sized M flares and major X-class flares. Each class also has subcategories from 1 to 9, so an M9 flare is stronger than an M4.