Wikipedia defines: "A coronal mass ejection (CME) is a massive burst of solar wind, other light isotope plasma, and magnetic fields rising above the solar corona or being released into space.
Coronal mass ejections are often associated with other forms of solar activity, most notably solar flares, but a causal relationship has not been established. Most ejections originate from active regions on Sun's surface, such as groupings of sunspots associated with frequent flares. Near solar maxima the Sun produces about 3 CMEs every day, whereas near solar minima there is about 1 CME every 5 days."
Coronal mass ejections are often associated with other forms of solar activity, most notably solar flares, but a causal relationship has not been established. Most ejections originate from active regions on Sun's surface, such as groupings of sunspots associated with frequent flares. Near solar maxima the Sun produces about 3 CMEs every day, whereas near solar minima there is about 1 CME every 5 days."
Just this month, 28th of November, a CME hit the earth. Even though it was weaker than expected but it produced bright auroras around arctic circle.
"The CME that hit Earth gave us some nice, colourful and easy-moving auroras," says photographer Antti Pietikäinen from Finland, who enjoyed the scene.
0 comments:
Post a Comment
Grace A Comment!