"Koronamassutkastning" ifrån solen (solstorm)

When a coronal mass ejection reaches Earth, solar particles stream down our planet's magnetic field lines toward the poles. In the process, the particles collide with atoms of nitrogen and oxygen in the Earth's atmosphere, which then glow, creating an effect similar to miniature neon signs.

The interaction of the solar particles with our planet's magnetic field has the potential to create geomagnetic storms, or disturbances, in Earth's magnetosphere. And while aurorae are normally visible only at high latitudes, they can light up the sky even at lower latitudes during a geomagnetic storm.

Fortunately for Earth-bound observers, the atmosphere filters out nearly all of the radiation from the solar blast. The flare shouldn't pose a health hazard, Golub told FoxNews.com.

Den farligaste typen av utbrott för människan är kanske så kallad koronamassutkastning (CME), som inträffar under den mest aktiva perioden under solens 11-åriga cykel. CME kommer den här gången att inträffa omkring 2012.

The sun's activity usually ebbs and flows on a fairly predictable cycle. Typically, a cycle lasts about 11 years, taking roughly 5.5 years to move from a solar minimum, a period of time when there are few sunspots, to peak at the solar maximum, during which sunspot activity is amplified.

The last solar maximum occurred in 2001. The latest minimum was particularly weak and long- lasting. The most recent solar eruption is one of the first signs that the sun is waking up and heading toward another maximum.