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A coronal hole at the Sun's north pole observed in soft X-ray. Coronal hole size and population correspond with the solar cycle. As the Sun heads toward solar maximum, the coronal holes move closer and closer to the Sun's poles. [4] During solar maxima, the number of coronal holes decreases until the magnetic fields on the Sun reverse.
A coronal hole looks like a vast area of blackness in the Sun because coronal holes consist of cooler, less dense plasma. This plasma is able to travel at faster speeds into space, streaming along ...
A coronal mass ejection (CME) Solar storms of different types are caused by disturbances on the Sun, most often from coronal mass ejections (CMEs) and solar flares from active regions, or, less often, from coronal holes.
A video of the series of coronal mass ejections in August 2010. A coronal mass ejection (CME) is a massive burst of solar wind and magnetic fields rising above the solar corona. [15] Near solar maxima, the Sun produces about three CMEs every day, whereas solar minima feature about one every five days. [16]
This sort of feature, which is called a coronal hole, develops every now and then and, at worst, ... RELATED: New NASA video shows the sun in stunning HD: Show comments. Advertisement.
Coronal loops are the basic structures of the magnetic solar corona. These loops are the closed-magnetic flux cousins of the open-magnetic flux that can be found in coronal holes and the solar wind. Loops of magnetic flux well up from the solar body and fill with hot solar plasma. [12]
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On 8 May 2024, a solar active region which had been assigned the NOAA region number 13664 (AR3664) produced an X1.0-class and multiple M-class solar flares and launched several coronal mass ejections (CMEs) toward Earth. [6] On 9 May, the active region produced an X2.25- and X1.12-class flare each associated with a full-halo CME.