2009-01-07 23. Any large object striking a planet would have thrown material off the world into orbit allowing it to coalesce into a moon.
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And how did they begin orbiting.
Why do moons orbit planets. At close distances tidal effects cause moons orbital inclination to be forced close to their parents axis of rotation. Do moons orbit around planets. Despite the fuss made over the categorisation of Pluto the definition of a planet is still badly thought out because there are moons out there which are bigger than Mercury and which are manifestly planets in their own right - they just happen to to orbit other planets.
A few have atmospheres and even hidden oceans beneath their surfaces. These are rocks from the original collision and this is why the Moons surface is covered in craters over 500000 of them. Saturn and Jupiter have the most moons with dozens orbiting each of the two giant planets.
That friction acts to try to stop the moon from going up and down that is decrease its inclination or make it orbit around the equator of the planet. I suspect but I dont know how to do. Pluto and some other dwarf planets as well as many asteroids also have small moons.
I understand that planets and moons were formed by objects smashing together and took millions of years to form but I dont understand orbits. That friction acts to try to stop the moon from going up and down that is decrease its inclination or make it orbit around the equator of the planet. The gravitation of the equatorial bulge perturbs the orbit of moons in such a way that it tends to diminish the inclination of the orbit of any moon.
Most planetary moons probably formed from the discs of gas and dust circulating around planets in the early solar system though some are captured objects that formed elsewhere and fell into orbit around larger worlds. They are generally solid bodies and few have atmo-spheres. Almost all moons in the Solar System keep one face pointed toward their planet.
This is a a volume of space where the Earths gravity dominates and is able to beat out gravity from something much larger and further away The Sun. The moon orbits the earth similarly the earth orbits the sun. The Moon is very visible from Earth.
A moon is just a planet thats close enough to another bigger planet to get trapped in orbit around it in addition to orbiting the sun. Anyway the basic reason why the planets revolve around or orbit the Sun is that the gravity of the Sun keeps them in their orbits. The basic reason why the planets revolve around or orbit the Sun is that the gravity of the Sun keeps them in their orbits.
Moons also called satellites come in many shapes sizes and types. Why then does it travel in an elliptical orbit around the Sun rather. Planets have moons because early in their formation they were introduced to other space- faring rocks that either crashed into the planet and threw off debris or were trapped in the gravitational pull of the planet.
The only exception we know of is Hyperion a moon of Saturn This tells us its probably not a coincidence that there is probably a reason for this to happen a physical process that happens to most moons. Moons come in many shapes sizes and types. A moon on an inclined tilted orbit passing above and below the equator of the planet will have its tidal bulge constantly moving up and down.
Paradoxically it is the Suns gravity that keeps the planets in orbit around it just as the Earths gravity keeps the Moon and satellites in orbit around it. Moons are just big chunks of rock that orbit a planet. This is due to what is known as the Hill Sphere.
The movement of the bulge leads to friction and heat. Most of the planetary moons probably formed from the discs of gas and dust circulating around planets in the early solar system. In the same way the Moon orbits the Earth because of the pull of Earths gravity the Earth orbits the Sun because of the pull of the Suns gravity.
Usually any submoons orbiting smaller moons closer to their planet would have their orbits destabilized by tidal forces. An analogy helps to explain this. With a telescope or even a very good pair of binoculars you can see the moons surface and its craters.
Because the planets gravity pull them so that they do not go away and the moons revolve around them with a constant speed so they stay in their orbit. Just as the Moon orbits the Earth because of the pull of Earths gravity the Earth orbits the Sun because of the pull of the Suns gravity. Earths Moon probably formed through a direct collision.
However the gravity of. The Moon would have been hit by other rocks for 500 million years. Earths Moon probably formed when a large body about the size of Mars collided with Earth ejecting a lot of material from our planet into orbit.
An object with a lot of mass goes forward and wants to keep going forward. Orbits are the result of a perfect balance between the forward motion of a body in space such as a planet or moon and the pull of gravity on it from another body in space such as a large planet or star. The movement of the bulge leads to friction and heat.
Why do planets and moons orbit As in why do they travel in elliptical or spherical pathways around stars planets. Tidal effects tend to planarise orbits over time when the central body is rotating. Exceptions would be if the moon was recently captured or if the planet rotated very slowly Venus for example or if the moon was close to the unstable region of the hill sphere where the object it orbits planet and the object that limits the planets hill sphere sun both have an effect on the moon.
Over billions of years the orbits of these rocks or debris now under the influence of the planets gravity were squashed into a spherical shape that kept them encircling their host planet. Moons orbit the planets because the planets have gravitional pull and the moons are stuck there unless the planet dies. If you throw a rock out from the top of a high tower it will travel a certain distance.
A moon on an inclined tilted orbit passing above and below the equator of the planet will have its tidal bulge constantly moving up and down. Moons also known as natural satellites orbit planets and asteroids in our solar system. Co-accreted moons also usually form in orbits close to their parents rotational axis to begin with because the accretion disc is in the same plane as the planets rotation.
Why do the planets have moons. Debris from the early Earth and the impacting body accumulated to form the Moon approximately 45 billion years. This coupled with the fact that the gravitational pull of each mass is inversely proportional to the distance causes the eliptical orbit.
So why does the Moon orbit the Earth. If the planet is rotating it will have an equatorial bulge. The reason they do not just fall into the Sun is that they are traveling fast enough to continually miss it.
Moons arent there for a purpose.
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