all the planets are rotating around sun, from where this planets are getting energy to rotate ,?

Question

acoording to the laws of phisics energy can naitherr be created or be distroyed, then one day all the enrgy stored in the planets will be over, whether such time will come?

Answer 1

The fact the planets rotate around the sun is to do with warp in spacetime fabric that the sun makes. Its like if you have a blanket and put a heavy object in the middle thereby making the blanket sag. The sun is the heavy object and the planets are like marbles you see in some cone shaped thing where they go around the edge. The sag makes them go around. The energy to move is said to have come from the 'big bang' when everything expanded (not exploded) very quickly, as you said, energy cannot be destroyed but the energy from the 'big bang' converted to kinetic energy and several other explosions and things that eventually led to the creation of the planet would of made the planets move (kinetic energy), by this time the sun should of just been created and made the sag. as th only force acting on the planets (for all intensive purpose) is gravity (the sag in the blanket) the planets are forced to continually move around the sun. when the sun dies so to speak the planets will vear off course (though not immediatly). For more information read 'A short history of nearly everything' by Bill Bryson, watch 'The Elegant Universe' and read carl sagan. I can't guarantee all this information is correct but this how I understand it to be.

Wait that guy above, what he said, about keplers laws ectera. That's what you should read

Answer 2

energy can be converted.

the planets are converting gravitational potential energy from the sun into angular momentum becuase of kepler's and newton's laws of planetary motion. look them up.

when the planets formed they formed out of a spinning disk of gas and dust surrounding the sun when the sun first formed. the spinning was due to the fact that the angular momentums of randomly moving particles eventually evened out through collisions. every time a piece of dust moving in a random direction hits another piece of dust, they average their orbits. eventually a random cloud of gas that is moving at all will become a spinning disk. as the planets start to form by the dust and gas collecting, the planets gain mass and lose volume. this contraction of the dust cloud is like a skater pulling in her arms and speeding up her spin.

the sun would love to pull the planets in with its gravity, but the planets all already have momentum from when they first formed and so they are essentially falling around the sun. they dont actually get any close becuase they would have to lose angular momentum somehow to do that, and as you stated energy cannot be destroyed. with no mechanism to bleed off their momentum they continue to fall in a circle. the enrgy just constantly stays there because it isnot being converted and cannot be destroyed.

i hope that made some sense.

Answer 3

Thinking bigger, you will realize that the terms forces, attraction, gravity are all made to describe what happens in the nature.

How it happens, speaking practically, is not within the limits of the very limited Science / Physics.

Energy can't be created nor be destroyed by those beings / things which are created & will be destroyed.

All the energy , it be the one within us, or within the Earth or in the sun or in some star or in anything comes from its source or from the one who created it. Nothing happens on its own. All chemicals are kept in a chem lab, but they never react themselves., someone has to make them react. In the same way the Big Bang (if u believe that something like this ever occured) didn't occur on its own. There must have been somone behind it to make it work so well.
So the person behing this is - God. All the energies come from him. He is the one who makes billions of stars shine and trillions of plantes rotate.

He thinks of the energy requierment for everything. When the enregy in the sun, earth ect end they simply die out as do we.

Answer 4

Energy? Gravity causes the planets to revolve around the sun

Answer 5

The planets of our solar system formed billions of years ago within a vast cloud of gas and dust. In the region of that cloud where the solar system formed there was already motion and since the energy of that motion can't be lost, each of the planets acquired some of it. Today the planets are coasting in their orbits around the sun, and if enough time passed would eventually fall into it as they lost more and more of their velocity. Long before that time (..about 4.5-billion years..) the sun itself will die.

Answer 6

Firstly, planets don't rotate around the sun. They revolve around the sun. The gravity of the sun keeps the planets in orbit. The planets formed as balls of gas around a central larger ball of gas that slowly became the sun. The initial motion of these balls of gas came from a supernova explosion, which created the matter for the sun and planets. Over time, gravity from the mass of these gases affected their positions. Some collided and some began to orbit each other.

Answer 7

The planets are not using any energy to rotate and revolve. You need to understand inertia to comprehend this. Once something in space is moving it does not use any energy to keep moving, rather, requires energy to stop. Planets are moving at a constant speed wanting to go in a straight line but the gravity of the sun keeps them going in orbit.

Answer 8

If you want to calculate how much energy you need to supply to an object to move it along a certain distance you need to know the force applied to the object and multiply that by the distance covered by the object while you are applying the force. In other words the definition of Energy in Physics is Energy = Force x distance. The force in question here is Gravity. One fundamental part of the definition is that the only distance that counts is the distance along the direction of the Force. The Force of Gravity between two object is along a line that connects them, in other words the force of gravity acts radially.
The orbits of planets are almost perfect circles (they are actually ellipses, but the argument explained here would apply to ellipses too, as shown in the following).
The motion of the planets around a perfect circular orbit is at 90 degrees with respect to the force of gravity (more exactly the velocity is perpendicular to the force). The consequence of this fact is that there is no motion along the line connecting the planet and the sun, that is the direction of the force.
This means that if you calculate the Energy required to keep moving a planet in a circular orbit it will be exactly 0.
What about elliptical orbits?
In this case the planet sometime comes close to the Sun sometime goes away from the Sun.
In this case part of the planet motion is along the radial direction, along the direction of the force of gravity (part of the motion is still at 90 degrees, this combination of two motions is what creates an elliptical orbit) What happens to the Energy then?
Well again the part of the motion along the direction perpendicular to the force of gravity contributes nothing, but the motion in the direction of the force makes the planet loose or gain potential energy. As the planet goes away from the sun it will gain potential energy and loose kinetic energy (that is motion energy) and it will slow down in its orbital speed. As the planet comes closer it looses potential energy and gains kinetic energy, so it will go faster.
Well, here is the interesting part, it turns out that the total energy gain (or loss) in moving the object closer or away from the sun is exactly zero also in this case. In fact whatever you lost in potential energy was gained in kinetic and vice versa.
This is a fundamental property of forces like gravity that are called properly "conservative" forces.
This is an observational (and also theoretical) property of gravity. If there was air resistance in space some of energy will be lost through friction (basically the organized kinetic motion of the planet will be transferred through collision to the random motion of the particles of air) and some of the energy would be lost (well again nothing is really lost but the planet will give away some of its energy to the air particles).
If the planet would interact through some exchange of mass with the sun (this actually happens sometime between two stars mutually orbiting each other in a close binary system) this perfect balance between potential and kinetic energy would be lost.
But interplanetary space is basically empty, so there is no friction at all.
Another possible mechanism for energy loss by the planet is emission of gravitational waves. This is something that Newton (the person responsible for the first scientific understanding of gravity) didn't predict and it is part of the modern understanding of gravity given to us by Einstein.
As the planet moves around the sun is creating tiny ripples in the fabric of space and time. Those ripples are called gravitational waves and they carry away (as all the waves do) energy. The energy will come from the planet orbital motion and that will result in the planet slowly spiraling in the sun.
This effect, though, depends on how fast the planet moves and how big its mass is. Even if the planets move pretty fast for our standards as humans, it is very small in comparison with the speed of light (very big number), that determines together with G (very small number called the gravitational constant) how strong this effect is. Because the ratio between G and c (with different powers) determines the amplitude of the gravitational waves (and energy of waves is proportional to the amplitude of the waves squared) and having here a small number divided by a big one, this spiraling in phenomenon is practically not observable in planets and even normal star systems. It is been observed, though, with very high precision in a neutron star- neutron star system (more than one system actually).
So to summarize the planets do not require any energy to continue to move around the sun, at least for many billions and billions and billions of years (well the sun will not live more than other 5 billions years).
A different but related question is then what about the initial energy required to give the initial orbital speed of the planet? Where that energy comes from (it is not lost once gained but it had to come from somewhere)?
Well, you will have to ask that question for detailed answer...; )
but as explained by other people above the solar system was formed inside the gaseous remnants of a shredded supernova.
The gas collapsed under its own gravity and because the gas was already rotating (probably slowly), rotational energy had to be conserved and the gas cloud started to rotate faster (because the radius of the cloud was getting reduced, and rotational energy is proportional to the product of velocity squared, mass and radius squared). This primordial rotational energy is what gives the orbital initial velocity of the planets and no further energy is required to keep them in motion.
If you go even further back in time you will find out that the energy for motion in the Universe in general comes from the initial big bang energy. Well, it is a well known fact in cosmology that if you sum up all of the energy in the universe, with motion energy being positive and potential gravitational energy being negative energy you get exactly 0 (zero).
That is an amazing fact.
So energy transforms from one type to another but the total energy in the universe is zero.

If you have any other astronomy related questions I will be glad to answer just send me an email to [e-mail]

Answer 9

Planet's Don't Get Energy For Rotating We Know That There Is A Source OF Energy Called Solar Energy That We Get From Sun Sun Has The Energy That Fall On Earth At The Speed Of
300000 km/Sec And It Also Have Power Of Gravity Just Like Earth But Having Gravity 100,000 More Energy Than Earth And Due To The Gravitational Energy OF The Sun The Planets Revolve And Rotates Around The Sun.

below Is Another Theory:-
If you want to calculate how much energy you need to supply to an object to move it along a certain distance you need to know the force applied to the object and multiply that by the distance covered by the object while you are applying the force. In other words the definition of Energy in Physics is Energy = Force x distance. The force in question here is Gravity. One fundamental part of the definition is that the only distance that counts is the distance along the direction of the Force. The Force of Gravity between two object is along a line that connects them, in other words the force of gravity acts radially.
The orbits of planets are almost perfect circles (they are actually ellipses, but the argument explained here would apply to ellipses too, as shown in the following).
The motion of the planets around a perfect circular orbit is at 90 degrees with respect to the force of gravity (more exactly the velocity is perpendicular to the force). The consequence of this fact is that there is no motion along the line connecting the planet and the sun, that is the direction of the force.
This means that if you calculate the Energy required to keep moving a planet in a circular orbit it will be exactly 0.
What about elliptical orbits?
In this case the planet sometime comes close to the Sun sometime goes away from the Sun.
In this case part of the planet motion is along the radial direction, along the direction of the force of gravity (part of the motion is still at 90 degrees, this combination of two motions is what creates an elliptical orbit) What happens to the Energy then?
Well again the part of the motion along the direction perpendicular to the force of gravity contributes nothing, but the motion in the direction of the force makes the planet loose or gain potential energy. As the planet goes away from the sun it will gain potential energy and loose kinetic energy (that is motion energy) and it will slow down in its orbital speed. As the planet comes closer it looses potential energy and gains kinetic energy, so it will go faster.
Well, here is the interesting part, it turns out that the total energy gain (or loss) in moving the object closer or away from the sun is exactly zero also in this case. In fact whatever you lost in potential energy was gained in kinetic and vice versa.
This is a fundamental property of forces like gravity that are called properly "conservative" forces.
This is an observational (and also theoretical) property of gravity. If there was air resistance in space some of energy will be lost through friction (basically the organized kinetic motion of the planet will be transferred through collision to the random motion of the particles of air) and some of the energy would be lost (well again nothing is really lost but the planet will give away some of its energy to the air particles).
If the planet would interact through some exchange of mass with the sun (this actually happens sometime between two stars mutually orbiting each other in a close binary system) this perfect balance between potential and kinetic energy would be lost.
But interplanetary space is basically empty, so there is no friction at all.
Another possible mechanism for energy loss by the planet is emission of gravitational waves. This is something that Newton (the person responsible for the first scientific understanding of gravity) didn't predict and it is part of the modern understanding of gravity given to us by Einstein.
As the planet moves around the sun is creating tiny ripples in the fabric of space and time. Those ripples are called gravitational waves and they carry away (as all the waves do) energy. The energy will come from the planet orbital motion and that will result in the planet slowly spiraling in the sun.
This effect, though, depends on how fast the planet moves and how big its mass is. Even if the planets move pretty fast for our standards as humans, it is very small in comparison with the speed of light (very big number), that determines together with G (very small number called the gravitational constant) how strong this effect is. Because the ratio between G and c (with different powers) determines the amplitude of the gravitational waves (and energy of waves is proportional to the amplitude of the waves squared) and having here a small number divided by a big one, this spiraling in phenomenon is practically not observable in planets and even normal star systems. It is been observed, though, with very high precision in a neutron star- neutron star system (more than one system actually).
So to summarize the planets do not require any energy to continue to move around the sun, at least for many billions and billions and billions of years (well the sun will not live more than other 5 billions years).
A different but related question is then what about the initial energy required to give the initial orbital speed of the planet? Where that energy comes from (it is not lost once gained but it had to come from somewhere)?
Well, you will have to ask that question for detailed answer...; )
but as explained by other people above the solar system was formed inside the gaseous remnants of a shredded supernova.
The gas collapsed under its own gravity and because the gas was already rotating (probably slowly), rotational energy had to be conserved and the gas cloud started to rotate faster (because the radius of the cloud was getting reduced, and rotational energy is proportional to the product of velocity squared, mass and radius squared). This primordial rotational energy is what gives the orbital initial velocity of the planets and no further energy is required to keep them in motion.
If you go even further back in time you will find out that the energy for motion in the Universe in general comes from the initial big bang energy. Well, it is a well known fact in cosmology that if you sum up all of the energy in the universe, with motion energy being positive and potential gravitational energy being negative energy you get exactly 0 (zero).
That is an amazing fact.
So energy transforms from one type to another but the total energy in the universe is zero.

Answer 10

I believe Enron was powering the solar system, so expect a complete collapse very very soon.

Ask the former managers at Enron. They could create and destroy energy with a phone call.