That complexity could mean bigger fireworks ahead. With the sunspot now rotating to face Earth, it could pose a threat for ...

The flare peaked at 5:54 p.m. EDT (2154 GMT), marking the first X-class flare from this active sunspot region, which has already been responsible for multiple M-class eruptions over the past few days.

The X9.05 solar flare peaked at 8:10 a.m. EDT (1210 GMT), triggering shortwave radio blackouts over Africa and Europe, the sunlit portion of Earth at the time of eruption.

Solar flares can reshape exoplanet atmospheres within days, affecting temperature, winds, and potential habitability.

The Sun has started spooky season with a bang, letting loose on October 1 with a colossal flare and coronal mass ejection headed right for Earth. The flare clocked in at X7.1 – the second most ...

The sun has unleashed the most powerful solar flare since 2017, just days after it spat out another monster explosion. Both outbursts have launched solar storms that will likely hit Earth this ...

A series of 16 powerful solar flares that caused radio blackouts on Earth could be followed by activity from an even more dangerous sunspot.

Earth is bracing for blackouts after the sun unleashed a massive X-class solar flare — the most powerful it can generate — Tuesday evening.

On March 28, Earth was hit by an X-class solar flare that was strong enough to ionize part of the planet's atmosphere.

The sun emitted a solar flare this week that was strong enough to cause radio blackouts on Earth — and it reportedly did. NASA's Solar Dynamics Observatory captured an image of the event, which ...

On Oct. 3, the sun released the most powerful solar flare this solar cycle, a colossal X9.05 eruption — and it's heading for Earth.