All the planets and their moons do, but does the sun rotate?
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Does the sun rotate?
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Posted 1 year ago #
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yes.
an interesting fact from my astrophysics days is that the sun contains 97% of the solar system's mass, but the rest (planets, asteroids etc) accounts for 97% of the angular momentum
Posted 1 year ago # -
of course it does.
Since the sun orbits the earth, it has to rotate otherwise how would the sun spots appear to move across the surface of the sun?
duh!
Posted 1 year ago # -
Everything's rotating
Posted 1 year ago # -
I thought The Moon and Mercury were tidally locked and didn't rotate around an axis (I assume that was the actual question).
But the Sun does rotate.
Posted 1 year ago # -
Stoner, how does the sun orbit the earth if the earth is flat then ?
Posted 1 year ago # -
The Moon does rotate, but appears to be in the same position to us as it rotates around the Earth.
Posted 1 year ago # -
relative to what?
Posted 1 year ago # -
All I know is that everything under the sun is in tune, but the sun is eclipsed by the moon.
Posted 1 year ago # -
Oh and there's no dark side of the moon really.
As a matter of fact it's all dark........ bum bump bum bump bum bump......
Posted 1 year ago # -
Answer to OP, yes.
Supplementary question. If the earth is rotating at 500ish mph, and is going round the sun at ?mph, and the sun is rotating and moving around the galaxy, which is rotating and getting further away from other galaxies, how fast am I actually moving as I sit here typing this?
Posted 1 year ago # -
That's easy - 50mph. But I have assumed an arbitary frame of reference for ease of calculation
Posted 1 year ago # -
If the earth was rotating at 500mph ish then we'd have twice as long to spend on STW every day - basically we'd be doomed.
Posted 1 year ago # -
Our shift pattern rotates also and the plate in the microwave.
Posted 1 year ago # -
Should it be 'The Sun', as opposed to 'the sun'?
Posted 1 year ago # -
how fast am I actually moving as I sit here typing this
Relative to what? You are not moving, and moving at the speed of light, and all the speeds between the two, depending on your frame of reference.
Posted 1 year ago # -
Mercury is not tidally locked after all.
Posted 1 year ago # -
Ambrose - Member
Should it be 'The Sun', as opposed to 'the sun'?In a sentence it is the Sun.
Posted 1 year ago # -
You are not moving, and moving at the speed of light, and all the speeds between the two
<Physics pedant mode>
There is no (local) frame of reference in which you are moving at the speed of light.
But all other speeds in between, yes.
</Physics pedant mode>
Posted 1 year ago # -
how does the sun orbit the earth if the earth is flat then ?
Don't be ridiculous, everyone knows the Earth is banana shaped.
Posted 1 year ago # -
Our shift pattern rotates also and the plate in the microwave
Another supplementary question: Do all microwaves rotate in the same direction?
Posted 1 year ago # -
Do all microwaves rotate in the same direction?
Only in the Southern Hemisphere.
Posted 1 year ago # -
Ooow, just found this thread, yummy....
sun makes one rotation in approx. 26(ish) days, which is it's 'Period'(T) Our period is 1 in 24 hrs.
Period of sun then, T = 1 x 24days, = 648hrs = 38880 mins = 2332800s.
We know that T= 1/freq (Hz), so Sun's freq = 1/T, = 1/2332800s, = 4.3 x 10-7 Hz (slow).
Now, angular velocity omega (w)= 2xpixf. So for the sun,....
w = 2x3.14x(4.3x10^-7), from above, = 2.7x10-6 Hz....
Finally, w= v/r, r is sun's radius = 6.96x10^8 m
v= wxr, = 2.7x10^-6 (Hz) x 6.96x10^8, = .......
188 (rounded up) meters per second.
So, when your looking (through correct glasses) at the sun imagine that a point on it's equator is moving 170 times faster than a top sprinter (100m in 10seconds = 10ms)
Roughly speaking, 170 to 180 times faster than this guy
Posted 1 year ago # -
Roughly speaking, 170 to 180 times faster than this guy
But he is slower than a rhinoceros in a hurry. Four legs good...
Posted 1 year ago # -
Do all microwaves rotate in the same direction?
No ours changes direction every time you put it on. One time it will go clockwise the next anti-clockwise and so on.
HTH
Apparently this is because if all microwaves rotated the same way at the same time the earth would stop rotating.
Posted 1 year ago # -
If the sun is a fermion, then it must be only half spinning, no?
Posted 1 year ago # -
<Physics pedant mode>
There is no (local) frame of reference in which you are moving at the speed of light.
But all other speeds in between, yes.
</Physics pedant mode>
Damn it Jim! I'm a chemist, not a theoretical physicist!
Posted 1 year ago #
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