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Solar spicule
Jet of plasma in the Sun's chromosphere
In solar physics, a spicule, also known as a fibril or mottle,[a] is a dynamic jet of plasma in the Sun's chromosphere about 300 km in diameter.[1] They move upwards with speeds between 15 and 110 km/s from the photosphere and last a few minutes each[1] before falling back to the solar atmosphere.[2] They were discovered in 1877 by Angelo Secchi, but the physical mechanism that generates them is still hotly debated.
Description
Spicules last for about 15 minutes;[3] at the solar limb they appear elongated (if seen on the disk, they are known as "mottles" or "fibrils").
Pengertian spikula mata hari biography
They are usually associated with regions of high magnetic flux; their mass flux is about 100 times that of the solar wind. They rise at a rate of 20 km/s (or 72,000 km/h) and can reach several thousand kilometers in height before collapsing and fading away.
Prevalence
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