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I am going to assume that what you mean here is "what is the pressure" in the solar wind? There is no "air"! The solar wind is pretty complex, consisting of a "fast wind" observed predominantly at high solar latitudes and a slower more variable wind a low latitudes. Both components essentially consist of an expanding stream of protons, electrons plus a ...

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The Sun orbits in the Galactic potential. The motion is quite complex; it takes about 230 million years to make a circuit (meaning an orbital speed of around 220 km/s), but at the same time it oscillates up and down with respect to the Galactic plane every $\sim 70$ million years and also wobbles in and out every $\sim 150$ million years (this called ...

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A lot of the answer depends on Orbital mechanics and calculating that isn't easy. If no action is taken, Earth's orbit is still likely to change, but how much and in which direction is hard to say. Long before the sun goes red giant it will get too hot for the Earth. If the earth doesn't move, the sun's increased temperature will likely make the earth ...

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Yes. No. It depends on your perspective. Suppose you're in a plane, flying from New York to Los Angeles. If you stay in your seat all the way, you haven't moved (from your seat). On the other hand, you clearly have moved, since you were in New York and now you're in Los Angeles. Motion is relative to some reference point, and you can always pick a reference ...

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Yes. The sun is at the centre of our solar system and the solar system orbits around the centre of the Milky Way at on average 828,000 km/hr so the sun does move round the centre of the galaxy. As Stan Liou said, movement is relative so if you wear a shirt and you move it isn't moving relative to you, but is moving relative to the ground. Source ...

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