Another huge coronal hole has opened up on our Sun and is facing Earth and is spewing streams of solar wind towards Earth at an incredible 750 kilometers per second.
It’s another massive hole in the Sun’s atmosphere and could influence major quake activity here on Earth in the coming days.
The whole is so huge it stretches more than halfway across the face of the Sun.
Spaceweather reports: This is a "coronal hole" (CH)--a region where the sun's magnetic field opens up and allows solar wind to escape. NASA's STEREO spacecraft recently sampled the stream flowing from this hole and the velocity was unusually high: 750 km/s. Such a fast-moving stream will almost surely spark Arctic auroras when it arrives on Feb. 1st.
The action could begin even before the stream arrives. NOAA forecasters say there is a 65% chance of geomagnetic storms on Jan. 31st when Earth crosses through a fold in the heliospheric current sheet. Many people have never heard of the heliospheric current sheet, yet it is one of the biggest things in the solar system--a vast undulating system of electrical currents shaped like the skirt of a ballerina. Earth dips in and out of it all the time. These crossings are called "solar sector boundary crossings," and they can cause high-latitude auroras