Something big is about to happen on the sun. According to measurements from NASA-supported observatories, the sun’s vast magnetic field is about to flip.
“It looks like we’re no more than 3 to 4 months away from a complete field reversal,” says solar physicist Todd Hoeksema of Stanford University. “This change will have ripple effects throughout the solar system.”
March 12, 2012 - thesuntoday.org believe the black spherical anomaly is more than likely a prominence cavity.
A massive solar storm is hurtling towards the Earth after the biggest eruption on the sun in six years.
The radiation storm is expected to create spectacular displays of the Northern Lights - but there are fears it could also disrupt communications, damage satellites and cause power grid outages at northern latitudes.
That first, moderate flare triggered the release of billions of tons of charged particles from the sun’s atmosphere, now travelling towards the earth at speeds of up to 1400 miles per second, according to Nasa's Goddard Space Weather Centre.
Auroras create green curtains of light August 4 over the Rupert River in Waskaganish (see map), a Cree Nation community in Quebec, Canada.
Last week's northern lights—which lasted a few days—were products of a large burst of plasma, or charged gas, from the sun known as a coronal mass ejection. A NASA orbiter called the Solar Dynamics Observatory saw last Sunday's eruption, which was aimed directly at Earth and sparked predictions of a shimmering sky show.