Article:
Signs Of The
Last Times
A giant dark hole has appeared on the sun’s flaming surface, a recently-taken NASA picture has revealed. So far, scientists are stumped by why this spectacular phenomenon, known as a “coronal hole,” occurs.
What modern science knows is that “coronal holes” are places where particles leave the sun’s surface at huge speeds - of up to 500 miles per hour (800 kilometers per hour). What’s still unclear is why this is happening.
The sun’s glowing comes from the “trapped” particles. The coronal holes “contain little solar material, have lower temperatures, and therefore, appear much darker.”
The coronal holes on the sun’s poles may be seen for five or more years. Their shape can vary greatly, though. It’s assumed that high-speed winds of solar particles coming out of the sun’s dark holes can cause geomagnetic storms and auroras on Earth.
In October 2014, just before Halloween, NASA took a photo of the sun resembling a jack-o'-lantern. The storms and flares on the surface of the sun actually gave a carved pumpkin appearance to the sun, as seen from the Earth.
