Why do planets revolve?

Question

In fact, why do some planets revolve faster than others? How did they start revolving, and why doesn't our moon revolve?

Answer 1

when matter accretes from space rubble and gas into a planetoid, the gravitational energy added to the system generally results in a spin. Picture a figure skater in a spin, or a child spinning in a swing. When either pulls their arms in, their speed increases. So in space, the random motions of the gas or rubble are amplified as the matter falls in, so any tiny amount of average rotation of the colapsing cloud of matter results in significant rotation of the body created. The moon is probably not a direct result of such an accretion process. I believe the heavy side of the moon always points towards earth.

Answer 2

Gravity doesn't entirely explain why planets revolve around the sun. If gravity was all there was in the solar system, the planets would fall into the Sun. Instead, the Sun is traveling through space around the Milky Way Galaxy...thus causing the planets to miss 'hitting' the sun, and instead orbit around it. The planets cannot escape into space because of the sun's gravity.

The reason the planets revolve on their axis is from a number of reasons, the main one, our Earth is not a perfect sphere. Secondly, the mass and density of the sun is not absolutely perfect. Hence, the space distortion caused by the Sun is not symmetrical, therefore an imperfect gravitational force on the earth mass.

Getting back to the 1st reason, the oval shape of the Earth and the gravitational pull of the sun, and the sun's velocity within the Milky Way, all sum up to cause a spinning mass.

And thirdly, the initial inertial energy during the formation of the solar system was random and, like a curve ball pitcher, the thrust was off-center. The odds of a thrust that was dead-center is astonomical. The odds of missing other large asteroids is also astronomically large.

The only time an object would NOTspin if the initial thrust was dead center, there were no objects to interfere with its path, the object was absolutely circular and the sun gravitional force was even. Lacking the above, we'll always be spinning.

Then there's the "core is a molten mass locked in a vault" answer. As the gravity of the sun pulls on the earth, combined with the forward momentum of the earth, we establish a revolution of the planet. The fact that the earth has an active seismic body means that our liquid core has gravity act on it. Just like the revolution, the dynamic of forward momentum and solar gravity causes the planet to wobble, or rotate. The fact that is does so at the magnetic poles is due to electron discharge that makes the magnetosphere as well as defines the poles.

The reason the Moon doesn't revolve is explained by the person above....a chunk off the earth is rotating at the same velocity as the earth. Without a major oval or odd-ball shape and without an asteroid spinning it out of control, the moon will always look like its not revolving. Lacking an internal lava core, would also explain why the moon doesn't spin or revolve on its axis.

Answer 3

All living things move, you see, human beings move, earth moves make some disaster, and spin as well because of gravitational pull.
The other reasons why planets also spin because the crust of planet that the planet shaking one-side, smooth out one singular shape of a circular rather than big edges of earth which doesn't resemble a planet but a rock.

Moon is much smaller than the planet that it is a simple shape, the gravitational is much weaker than the planets that it only relies on the planets' pull. It recieve less gravitational pull because planet is not a sun, and the planet does not burn to create a powerful gravitational pull or else the moon will spin.

Moon is not sun's satellite that it was in the vaccuum where it can hover only in the night where it recieve less heat. It is the place where there is no living being live there but a vacant place where space can been seen only not the clouds or sky. It's merely a small crust of leftover planet's debris that has not transform into a planet so it's only hover over the planets.

Answer 4

As the solar system was coming into being, it was a swirling mass. Parts of that swirling mass started to gravitate into individual balls of matter becoming the sun, the planets and the moons. As the original mass was rotating, each of these rotated in the same way.

After the original solar system was created, other events have happened. One was a large asteroid or piece of space debris hit Venus a glancing blow just hard enough to stop and then slightly reverse the spin. Another was that a direct impact on Earth caused a large chunk of the mantle to be thrown into orbit around Earth, creating the moon.

Because of the way that the moon was created it is rotating such that one side of the moon is always pointing towards earth.

To prove to yourself that the moon is rotating, point your finger at your mouse mat with the fingernail nearest to the mouse. Now move your finger round the mouse *keeping the fingernail pointing at the mouse*. If you can get your finger back to its original position you have probably dislocated your shoulder.

Answer 5

They revolve due to the forces around them but also due to circumstance during their development. If they were hit by a large meteor, it may have caused enough force for the rate of revolution to increase for several million years.

Our Moon does revolve but due to gravitational force from the Earth it revolves at the same rate as it orbits the Earth. It still spins but in such a way that only one side is ever visible to the Earth. This is called tidal locking.

Answer 6

The big bang started everything moving. Every planet has a different track, path or orbit from the sun and different kinds of space crashes that could change any planets speed. The moon was attached to us, it came from earth in one of these crashes.

Answer 7

according to the astronomers the planets have a oval orbit and if the orbit is small then it has to move a little faster. They started moving by gravitational force and our moon revolves around us.

Answer 8

In english: When gases and debris start to amount, gravitational energy (Think of somebody pulling you by the arm in circles) increases, hence why planets spin. the bigger the planet, the slower the spin, because more enrgy is required. It's also pressure that adds to this, hence why sometimes it seems that planets are 'squished'

Answer 9

It would be wierd if they didn't.

The most miniscule movement apart from it's orbit would be a partial revolution. Thereby i suggest it's virtually impossible for them not to.
I propose they just spin at the most comfortable, energy efficient speed.

Answer 10

Gravatational pull.