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[Articles Home]  [Add Article]  

Does the Sun Rotate?

from science.howstuffworks.com on January 12, 2019
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Does the Sun Rotate?

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Does the Sun Rotate?  
by KD6UBX on January 12, 2019 Mail this to a friend!
Respectfully to the OP, how can this fireball of a sun be observed as rotating?

It has no fixed physical mass that I am aware of.

Who knows?

 
RE: Does the Sun Rotate?  
by K5XS on January 13, 2019 Mail this to a friend!
The sun has enormous mass: 2x10^30 kg
 
Does the Sun Rotate?  
by K4NNK on January 13, 2019 Mail this to a friend!
Helioseismology has transformed our knowledge of the Sun's rotation. Earlier studies revealed the Sun's surface rotation, but now a detailed observational picture has been built up of the internal rotation of our nearest star. Unlike the predictions of stellar-evolution models, the radiative interior is found to rotate roughly uniformly. The rotation within the convection zone is also very different from prior expectations, which had been that the rotation rate would depend primarily on the distance from the rotation axis. Layers of rotational shear have been discovered at the base of the convection zone and in the subphotospheric layers. Studies of the time variation of rotation have uncovered zonal-flow bands, extending through a substantial fraction of the convection zone, which migrate over the course of the solar cycle, and there are hints of other temporal variations and of a jet-like structure. At the same time, building on earlier work with mean-field models, researchers have made great progress in supercomputer simulations of the intricate interplay between turbulent convection and rotation in the Sun's interior. Such studies are beginning to transform our understanding of how rotation organizes itself in a stellar interior.
 
Does the Sun Rotate?  
by KD6UBX on January 15, 2019 Mail this to a friend!
I guess I must clarify by saying the sun has no observable fixed point as an island, mountain etc.

It is just a gaseous fireball that flips moving fire.

I dont know how science can observe the same spot on the sun, when it has no fixed locations to observe.

The planets are easy to observe in rotation because of these visible locations.
 
RE: Does the Sun Rotate?  
by K5VAH on January 17, 2019 Mail this to a friend!
I would think that sun spots are seen as rotating on the suns surface just as an island would be seen on the earths surface from space.
 
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