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Why do astronomers say that the sun rotates once every 27 to 31 days rather than giving an exact number?
Wiki User
∙ 8y ago
In this case, "27 to 31 days" doesn't mean a wishy washy, inexact number.
Since the sun isn't solid, there's no reason that all of it has to rotate at the same rate,
and in fact it doesn't. Different "latitudes" on the sun rotate at different rates. One belt
rotates every 27 days, another belt rotates every 31 days, and there are other belts
in between those that rotate at every rate in between 27 and 31 days. So there isn't
a single "exact number" for the sun, as there is for every solid body including the earth.
For any rate you want to name between 27 and 31 days, there's a part of the sun that
rotates exactly once in that period of time.
Kevin Greenfelder
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Why do astronomers say the sun rotates every 27 to 31 days rather than give an exact number?
The sun is not a solid object and different parts of it rotate at different speeds.
Why was Virgo put in the sky?
It is more accurate to say that the constellation Virgo was imagined in the sky, rather than that it was put there. Early astronomers or astrologers were trying to make sense out of the rather large number of stars in the sky.
Why do astronomers say that the sun rotates once every 27 to 31 days rather that give an exact number?
In this case, "27 to 31 days" doesn't mean a wishy washy, inexact number. Since the sun isn't solid, there's no reason that all of it has to rotate at the same rate, and in fact it doesn't. Different "latitudes" on the sun rotate at different rates. One belt rotates every 27 days, another belt rotates every 31 days, and there are other belts in between those that rotate at every rate in between 27 and 31 days. So there isn't a single "exact number" for the sun, as there is for every solid body including the earth. For any rate you want to name between 27 and 31 days, there's a part of the sun that rotates exactly once in that period of time.
What planet revolves around the sun while rotation on its side?
Uranus rotates in its horizontal axis rather than on its vertical one, like the other planets in the solar system. Astronomers believe that an Earth-sized object collided with the planet in the distant plans and knocked it onto its side.
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An 'orbital sander' is one in which the motor rotates the sanding plate rather than imposing a back and forth movement. - This is the commonest and mildest wood sander.
