After weeks of reduced activity, the sun erupted with three powerful flares on a single day. That could send solar flares ...

An active sunspot could give photographers another reason to photograph the night skies this weekend. A solar flare that hit ...

After more than three weeks without a powerful solar flare, the sun has suddenly ramped up its activity, firing off three ...

After weeks of relative quiet, the Sun has erupted with a series of powerful solar flares, signaling a return to more active space weather conditions. Over the weekend, three M-class solar flares were ...

The M4.4 solar flare unleashed a coronal mass ejection (CME) into space — and Earth might just receive a glancing blow.

Space weather experts warn that a moderate-strength geomagnetic storm could hit Earth Friday or Saturday (Aug. 8 or 9) — ...

After a 22-day lull, sunspot AR 4168 unleashed three M-class flares on Aug. 3–4. They may cause brief radio blackouts and auroras from glancing CMEs.

When strong solar flares occur, they can cause radio communication blackouts, according to NOAA. NOAA measures solar flares based on several factors, including the level of x-ray flares and radio ...

A massive solar flare erupted from the sun over the weekend, causing radio blackouts on Earth – and more could be on the horizon. The sun emitted the solar flare on Saturday, peaking around 10:48 a.m.

The resulting solar flare was the strongest we've seen so far this cycle, and going all the way back to September 2017. The Sun's activity is definitely intensifying as we approach the peak of ...