What is the time taken by the sun to revolve around the centre of our galaxy

By using sunspots, he had discovered that the sun rotates, pleasingly ironic given these dark cool patches on the surface of the sun are an artifact of that rotation. To this day, astronomers and solar scientists use sunspots and other features on the surface of our star to measure its rotation.Yet, there is more to learn about the sun's rotation. Primarily, how different it is from the rotation of our planet. Is the sun's rotation different? While Earth and the other inner planets are composed of solid rock, the sun is an ultra-hot ball of dense ionized gas — mainly That means that the way it rotates is different than the way our planet, The sun experiences something called differential rotation. This means that its rotation proceeds at different rates depending on where you look at the star. "Since the sun is a ball of gas/plasma, it does not have to rotate rigidly like the solid planets and moons do," — Does the moon rotate? — Perihelion: The sun up close — How big is the sun? Moving from the sun's poles to its equator, the time in which this area of plasma rotates shortens. The poles complete a rotation in 35 days, while the area just above the equator completes a rotation in just 25 days. This means that no area of the sun completes an orbit anywhere near as rapidly as our planet does. The sun (right) is orbited by the planets of the solar system. (Image credit: ANDRZEJ WOJCICKI/SCIENCE PHOTO LIBRARY via Getty Images.) Differences in rotation rates on our star aren't ...

Our galaxy does indeed! The Milky Way is one of two large galaxies that make up what’s called the Local Group, which contains some fifty-odd galaxies. The other large galaxy involved is Andromeda, our closest galactic neighbor; our galaxy and Andromeda are slowly orbiting each other. The rest of the Local Group are mostly small things, like the Large or Small Magellanic Clouds, which are gravitationally tied to either the Milky Way or Andromeda, and orbit the larger galaxy to which they’re bound. Andromeda weighs in somewhere between 700 billion solar masses and a trillion solar masses. This is approximately the same mass as our own Milky Way, which is also usually considered to have about a trillion solar masses worth of stuff hanging around. If you want to figure out how any two objects are going to orbit each other, you want to know their mass, how far apart they are, and how fast they’re moving relative to each other. With this information, you can determine what path the two objects will take relative to each other. The main thing we need to be concerned with right now is the mass. The masses of your two objects - in this case, the Milky Way and Andromeda - determine the point around which both objects will orbit. This is called the centre of mass, and is defined as the point in space that has an equal distribution of mass around it. For a system like the Sun and the Earth, the Sun contains almost all the mass - the mass of the Earth being so far away doesn’t really c...

Though it is understandable that the sun and the earth may be revolving around a barycenter, but, if so, not only the sun and Jupiter should also be revolving around some barycenter, the same should be true about the other planets as well? So it has to be true that the sun revolves around as many barycentres as the number of the planets we have in our solar system. I am quite confounded — how any object may at all revolve around multiple barycenters? And if an object can't revolve around more than one point, does it not nullify the theory that the sun and the earth revolve around a barycenter? The short answer is no; there is only one barycenter. Yes, you can count the Sun/Jupiter barycenter or the Sun/Saturn barycenter, or whichever barycenter you want, but the net effect of all Solar System bodies is to be considered when you calculate the actual barycenter of the Solar System. (And yes, that would include counting all the small asteroids and moons, even those yet unknown to humans, even though their combined effect is negligible.) One could see it in such a way that yes, there are many barycenters, but the movement of the bodies is around the “average” barycenter. Somehow. But that’s not a good way to describe the system. $\begingroup$ @Barmar of course, there is only one fixed place in a system and all other points move around. The barycenter certainly qualifies as one of those places which can be defined as fixed, and I am even inclined to say that it is one of, if no...

Our galaxy does indeed! The Milky Way is one of two large galaxies that make up what’s called the Local Group, which contains some fifty-odd galaxies. The other large galaxy involved is Andromeda, our closest galactic neighbor; our galaxy and Andromeda are slowly orbiting each other. The rest of the Local Group are mostly small things, like the Large or Small Magellanic Clouds, which are gravitationally tied to either the Milky Way or Andromeda, and orbit the larger galaxy to which they’re bound. Andromeda weighs in somewhere between 700 billion solar masses and a trillion solar masses. This is approximately the same mass as our own Milky Way, which is also usually considered to have about a trillion solar masses worth of stuff hanging around. If you want to figure out how any two objects are going to orbit each other, you want to know their mass, how far apart they are, and how fast they’re moving relative to each other. With this information, you can determine what path the two objects will take relative to each other. The main thing we need to be concerned with right now is the mass. The masses of your two objects - in this case, the Milky Way and Andromeda - determine the point around which both objects will orbit. This is called the centre of mass, and is defined as the point in space that has an equal distribution of mass around it. For a system like the Sun and the Earth, the Sun contains almost all the mass - the mass of the Earth being so far away doesn’t really c...

By using sunspots, he had discovered that the sun rotates, pleasingly ironic given these dark cool patches on the surface of the sun are an artifact of that rotation. To this day, astronomers and solar scientists use sunspots and other features on the surface of our star to measure its rotation.Yet, there is more to learn about the sun's rotation. Primarily, how different it is from the rotation of our planet. Is the sun's rotation different? While Earth and the other inner planets are composed of solid rock, the sun is an ultra-hot ball of dense ionized gas — mainly That means that the way it rotates is different than the way our planet, The sun experiences something called differential rotation. This means that its rotation proceeds at different rates depending on where you look at the star. "Since the sun is a ball of gas/plasma, it does not have to rotate rigidly like the solid planets and moons do," — Does the moon rotate? — Perihelion: The sun up close — How big is the sun? Moving from the sun's poles to its equator, the time in which this area of plasma rotates shortens. The poles complete a rotation in 35 days, while the area just above the equator completes a rotation in just 25 days. This means that no area of the sun completes an orbit anywhere near as rapidly as our planet does. The sun (right) is orbited by the planets of the solar system. (Image credit: ANDRZEJ WOJCICKI/SCIENCE PHOTO LIBRARY via Getty Images.) Differences in rotation rates on our star aren't ...

Though it is understandable that the sun and the earth may be revolving around a barycenter, but, if so, not only the sun and Jupiter should also be revolving around some barycenter, the same should be true about the other planets as well? So it has to be true that the sun revolves around as many barycentres as the number of the planets we have in our solar system. I am quite confounded — how any object may at all revolve around multiple barycenters? And if an object can't revolve around more than one point, does it not nullify the theory that the sun and the earth revolve around a barycenter? The short answer is no; there is only one barycenter. Yes, you can count the Sun/Jupiter barycenter or the Sun/Saturn barycenter, or whichever barycenter you want, but the net effect of all Solar System bodies is to be considered when you calculate the actual barycenter of the Solar System. (And yes, that would include counting all the small asteroids and moons, even those yet unknown to humans, even though their combined effect is negligible.) One could see it in such a way that yes, there are many barycenters, but the movement of the bodies is around the “average” barycenter. Somehow. But that’s not a good way to describe the system. $\begingroup$ @Barmar of course, there is only one fixed place in a system and all other points move around. The barycenter certainly qualifies as one of those places which can be defined as fixed, and I am even inclined to say that it is one of, if no...

Though it is understandable that the sun and the earth may be revolving around a barycenter, but, if so, not only the sun and Jupiter should also be revolving around some barycenter, the same should be true about the other planets as well? So it has to be true that the sun revolves around as many barycentres as the number of the planets we have in our solar system. I am quite confounded — how any object may at all revolve around multiple barycenters? And if an object can't revolve around more than one point, does it not nullify the theory that the sun and the earth revolve around a barycenter? The short answer is no; there is only one barycenter. Yes, you can count the Sun/Jupiter barycenter or the Sun/Saturn barycenter, or whichever barycenter you want, but the net effect of all Solar System bodies is to be considered when you calculate the actual barycenter of the Solar System. (And yes, that would include counting all the small asteroids and moons, even those yet unknown to humans, even though their combined effect is negligible.) One could see it in such a way that yes, there are many barycenters, but the movement of the bodies is around the “average” barycenter. Somehow. But that’s not a good way to describe the system. $\begingroup$ @Barmar of course, there is only one fixed place in a system and all other points move around. The barycenter certainly qualifies as one of those places which can be defined as fixed, and I am even inclined to say that it is one of, if no...

Our galaxy does indeed! The Milky Way is one of two large galaxies that make up what’s called the Local Group, which contains some fifty-odd galaxies. The other large galaxy involved is Andromeda, our closest galactic neighbor; our galaxy and Andromeda are slowly orbiting each other. The rest of the Local Group are mostly small things, like the Large or Small Magellanic Clouds, which are gravitationally tied to either the Milky Way or Andromeda, and orbit the larger galaxy to which they’re bound. Andromeda weighs in somewhere between 700 billion solar masses and a trillion solar masses. This is approximately the same mass as our own Milky Way, which is also usually considered to have about a trillion solar masses worth of stuff hanging around. If you want to figure out how any two objects are going to orbit each other, you want to know their mass, how far apart they are, and how fast they’re moving relative to each other. With this information, you can determine what path the two objects will take relative to each other. The main thing we need to be concerned with right now is the mass. The masses of your two objects - in this case, the Milky Way and Andromeda - determine the point around which both objects will orbit. This is called the centre of mass, and is defined as the point in space that has an equal distribution of mass around it. For a system like the Sun and the Earth, the Sun contains almost all the mass - the mass of the Earth being so far away doesn’t really c...

By using sunspots, he had discovered that the sun rotates, pleasingly ironic given these dark cool patches on the surface of the sun are an artifact of that rotation. To this day, astronomers and solar scientists use sunspots and other features on the surface of our star to measure its rotation.Yet, there is more to learn about the sun's rotation. Primarily, how different it is from the rotation of our planet. Is the sun's rotation different? While Earth and the other inner planets are composed of solid rock, the sun is an ultra-hot ball of dense ionized gas — mainly That means that the way it rotates is different than the way our planet, The sun experiences something called differential rotation. This means that its rotation proceeds at different rates depending on where you look at the star. "Since the sun is a ball of gas/plasma, it does not have to rotate rigidly like the solid planets and moons do," — Does the moon rotate? — Perihelion: The sun up close — How big is the sun? Moving from the sun's poles to its equator, the time in which this area of plasma rotates shortens. The poles complete a rotation in 35 days, while the area just above the equator completes a rotation in just 25 days. This means that no area of the sun completes an orbit anywhere near as rapidly as our planet does. The sun (right) is orbited by the planets of the solar system. (Image credit: ANDRZEJ WOJCICKI/SCIENCE PHOTO LIBRARY via Getty Images.) Differences in rotation rates on our star aren't ...