X is the most powerful class of solar flare. The number following it represents the strength, however, and 1.1 is relatively ...

NASA's Solar Dynamics Observatory captured an X1.1-class solar flare in multiple wavelengths. See time-lapse footage of the blast that caused "a strong shortwave radio blackout over South America ...

The sun has somewhat surprised forecasters today with a dramatic X-class solar flare from a newly emerging sunspot region. The intense solar flare originated from sunspot region AR4046 and was ...

Solar flares are bursts of radiation from the ... She hopes predicting big flares can help keep astronauts and electrical systems safe.

For decades, scientists have tried in vain to accurately predict solar flares—intense bursts of light on the sun that can send a flurry of charged particles into the solar system. Now ...

Well, that’s a bit dramatic (it explodes a lot) — but a particularly large sunspot named AR2781 produced a C5-class solar flare which is ... of these services be a big deal?

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Viewing opportunities in the northern lights forecast are significantly better than initially reported yesterday and ...