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Destrio
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Since each planet and star has it's own gravity which causes smaller bodies to orbit around them. Will our sun have an orbit around bodies with greater gravity than it?
pixel01 said:The linear speed of the Sun is higher than that of the Earth.
AppleBite said:Are you sure this is what you mean?
I understand your point here, but obviously no object can reach the speed of light as this would require an infinite amount of energy according to Relativity. Also keep in mind that speed is relative to the reference frame of the observer, so no object can travel with the speed of light relative to Earth.
Note that when discussing speeds in a cosmic sense, one cannot really use classical terms like km/sec as time is also relative to the speed. If we are to make any sense when using classical terms of velocity, we must at the very least define a fixed reference point in space, as in the case of redshift we assume the Earth to be a stationary point in the Cosmos.
Just to clarify - large bodies orbit small bodies too.Destrio said:Since each planet and star has it's own gravity which causes smaller bodies to orbit around them. Will our sun have an orbit around bodies with greater gravity than it?
There is no correlation between the speeds of bodies orbiting bodies within larger orbiting systems - there's no "progression" of orbital speeds that way. It is simply a factor of the masses and the distances of the objects involved. And there are no objects so massive and so close to each other that their orbits reach the speed of light.pixel01 said:Can it be like that for ever?.
The linear speed of the Sun is higher than that of the Earth. Then the Milkyway travels faster in rotating the cluster ..and so on.. until something (we may not know) reaches the limit of light speed !
pixel01 said:The fact that no object can reach the speed of light is something contradict your case: 'and so on', which seems like an unending sequence.
I find it a little difficult to express my idea just now. But I will come back.
The size of a planet's orbit around a star is determined by the balance between the gravitational pull of the star and the planet's own velocity and centrifugal force. The greater the gravitational pull of the star, the smaller the orbit will be, and vice versa.
Yes, it is possible for a planet to orbit multiple stars. This is known as a binary or multiple star system. However, the orbit of the planet will be more complicated and may vary depending on the gravitational pull of each star.
Yes, a planet's orbit can be affected by passing by a star with greater gravity. The gravitational pull of the passing star can alter the planet's trajectory, causing its orbit to become more elliptical or even causing it to be ejected from its original orbit.
The mass of a star has a direct impact on the orbit of its planets. A star with greater mass will have a stronger gravitational pull, resulting in smaller and faster orbits for its planets. On the other hand, a star with lower mass will have a weaker gravitational pull, leading to larger and slower orbits for its planets.
No, our sun is the most massive object in our solar system and there is currently no known object with greater gravity that it could orbit. However, the gravitational pull of other stars or objects in the universe can affect the sun's trajectory and cause it to move through space.