Solar flares are a fascinating thing and have a profound effect on what astronomers refer to as "space weather." These events vary with the sun's 11-year solar cycle, releasing immense amounts of ...

A fiery X2.7-class solar flare that erupted from ... The storm blasted out at 4:25 a.m. ET and registered as an R3-level event — strong enough to disrupt high-frequency radio signals and ...

A high-powered solar flare erupted from the sun last week, causing a major radio blackout in Europe and Asia. The eruption happened at 3:25 a.m., meaning that the sun wasn't in the Texas sky at ...

Solar flares measured around X1 — like the May 13 and 14 events — indicate strong flare intensity. An X10 flare is described as as a severe event, according to NOAA.

"Solar activity reached high levels. An X3.3/sf flare was observed at 24/0357 UTC from Region 3869," NOAA's Space Weather Prediction Center said in a forecast discussion, "as well as an ...

More Solar Flares Blast Toward Earth. By ABC News. December 14, 2006, 2:11 PM.

The Solar Orbiter mission has captured the highest-resolution views of the sun’s surface to date, showcasing massive sunspots related to increasing solar activity.

The 2001 sunspot peak came only a few years before the famous 2003 Halloween storms, when an X45 solar flare and G5 geomagnetic storms were recorded and power outages occurred in Sweden.

A groundbreaking new mission may soon allow scientists to study the sun’s corona with unprecedented clarity. The Moon-Enabled Sun Occultation Mission (MESOM), a proposal from a group of researchers ...

The sun unleashed a massive X-class solar flare -- the most powerful it can generate -- on Tuesday evening that has the potential to pummel our planet with a powerful geomagnetic storm this weekend.

The northern lights may be visible along a stretch of northern states Tuesday night, and a recent solar flare could heavily disrupt radio frequencies this week, according to a National Oceanic and ...