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soorejmg
Is there any possibility for moon to fall on earth??How can it be done>???What i mean is like some change in orbit in some way (as example) and due to good gravuitational pull of earth it can heppen.Or some way able to stop the orbital motion...

give me some way
PhilP
No it will never happen. Theoretically it would be possible for it to eventually be struck by some large object, dispacing it's orbit, or destroying it. Or man could destroy it or change it's orbit by nuclear means, but that doesn't mean it WILL ever happen. The Moon, the Earth, and the Sun are here to stay, permanently. As is mankind. Not all though.
soorejmg
QUOTE (PhilP+Sep 28 2006, 12:50 PM)
No it will never happen. Theoretically it would be possible for it to eventually be struck by some large object, dispacing it's orbit, or destroying it. Or man could destroy it or change it's orbit by nuclear means, but that doesn't mean it WILL ever happen. The Moon, the Earth, and the Sun are here to stay, permanently. As is mankind. Not all though.

suppose some large body comes and hit making moon still for some time..then the moon moves nuder gravitaional pull of earth and comes and hit na??
Zephir
QUOTE (PhilP+Sep 28 2006, 03:50 PM)
The Moon, the Earth, and the Sun are here to stay, permanently. As is mankind. Not all though.

Scientists have long known the center of the moon is about 238,700 miles from the center of Earth. In the early 1970s, the distance was known to within about 25 centimeters (10 inches) but technological advances since the mid-1980s have sharply reduced that margin to about 2 centimeters (less than an inch). Due the tidal forces, the distance increases over time - the moon is spiraling away from Earth at a rate of 3.8 cm per year.
PhilP
I don't know of any way to stop it's rotation or orbit. Since I've never wanted to, I haven't given it much thought. However look at how a tugboat does it's job of pulling along a much larger ship. Perhaps something similar could occur with a powerful space ship. But that sucker would surely need to be nuclear powered.

As far as the Moon slowly spiralling out of orbit, I wasn't really aware of that, but why is it doing so? What is to stop it spiralling back in again if it is? Why would it do that? Gravity perhaps
PhilP
I may be wrong, but it seems to me that as with Pluto which came inside Neptune's orbit for a number of years, but returned now to it's 'normal' place, why couldn't the Moon also do something similar? I know Pluto isn't a Moon, and has an eccentric orbit, but it seems that as the orbit becomes more distant, and it maintains the same orbit speed, the orbit period would become longer, and thus the gravitational pull would increase, bringing it back in. Just a thought. I may well be completely off.
AlphaNumeric
Neptune and Pluto both have 'stable orbits', but Pluto's is so eccentric that it's trajectory causes it to pass closer to the Sun than Neptune for a number of years every century or two. It's not that it's orbit changes, just it's a very strange shape compared to the other planets' orbits. It's orbit speed does change, since it's an elliptical orbit but that's true of all the planets and moons.

So the short answer would be 'you're completely off' I'm afraid.
soorejmg
QUOTE (Zephir+Sep 28 2006, 12:57 PM)
Scientists have long known the center of the moon is about 238,700 miles from the center of Earth. In the early 1970s, the distance was known to within about 25 centimeters (10 inches) but technological advances since the mid-1980s have sharply reduced that margin to about 2 centimeters (less than an inch). Due the tidal forces, the distance increases over time - the moon is spiraling away from Earth at a rate of 3.8 cm per year.

Arent these tidal force a rsult of the gravitational force between earth and moon??How come then we say moon moving away fue to tidal force????I think what i saaid i mot wrong..corect me if not...Also can u please tell me any toher chance??
soorejmg
we are deviating from topic..can any one say some idea to my ques???Aby way that moon could fal on earth./.
Shemi
There is a small possibility that the moon will eventually fall to earth. The the lag of the mass of the earth in response to the moon's gravity is what slows the moon, reducing it s angular momentum, and causing it to move farther away. Eventually this will cause the earth to stop spinning at which point the moon will stop moving farther out and slowly move back in however this process would only happen if the earth and moon are not significantly disturbed relative to each other when the sun becomes a red giant. That is why it is uncertain as to wheather or not the moon will ever crash into the earth via this method.

The combined force of all the explosives currently in existance could not make a significant change in the moon's orbit (unless one considers the long term effect which are still probably not significant).

Manipulating the orbits of asteroids or comets to impact the moon and change its orbit would be possible, however, one would need a large number of them to make it crash into the earth. (if one wished to live to see the impact one would not want to be anywhere near the earth-moon system while these multitudes of asteroids and comets are rainging down on the moon)

Even if the moon was suddenly stopped in its orbit, it would still take more than 3 days for it to impact the earth.

If one used a large mass one could slowly coax the moon closer and closer to the earth at a point in its orbit, but I think this would take a very very very long time (millions to billions of years for anything we currently can move).
optimo
Here is a thought, although I have no math.

Does the orbit pair of the Moon and Earth create a wobble in the orbit of Earth as it goes round the Sun?

Would the eventual balancing of the Moon-Earth system affect the Sun-Earth/Moon system, and which way?

Does the whole mass of the Earth+Moon add velocity to the path around the Sun, or is it the opposite and the orbit would decrease, eventually bringing the Earth closer to the Sun?

And the last post gave me another thought. If the Moon were to immediately stop it's orbit, would it begin tailing the Earth around the Sun? Would it actually get closer to the Earth if it was stopped directly behind our solar orbit?

Is the influence of the Earth on the Moon orbit greater than the Sun-to-Earth influence? is there a chance that the Moon could not catch up to the Earth given the perfect stopping point?
Ron
Hi All,
Quote "Does the orbit pair of the Moon and Earth create a wobble in the orbit of Earth as it goes round the Sun?"
That's a pretty interesting thought, Optimo. Have you followed any of the recent findings of planets in other solar systems? These systems are so far away, astronomers look for wobbles in the most dominant objects of the system for planet like candidates. Just recently there has been an explosion of planet findings from some relatively small planets (I recall something like only 5 times the size of the Earth) to gas giants like Jupiter and even brown dwarfs (basically a star that doesn't burn bright or at all) orbiting a much larger star. They can calculate the numbers, sizes and even densities of objects by analyzing the main star's wobble.
If you use the rubber sheet analogy (gravity is the bending of a rubber sheet if you put a ball on it), you can picture how one object's indentation would interact with another's and another's ...
I've always liked browsing this site.

http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.htm
Later,
Ron
dwk
There's no need for any lunar impact. All that needs to happen is for a sufficiently massive body to pass between the earth and the moon - such as might happen if another star system collided with our solar system. This would slingshot the earth and the moon into each other.
Guest_PhilP
There's always a way that it could happen, but if you're asking whether it WILL happen, the answer is still "no". This is no scientific theory nor prediction, only knowing the truthful and unfailing Word of the Creator, who did not make it all for nothing, or to be destroyed, and who is infinitely able to restoke the furnace of the Sun, or give a little nudge to the Earth or Moon, if such would ever be required. Having faith in his promises leaves me in no doubt, as history has also recorded the evidence of the bulk of the Bible's prophetic fulfillment.

It seems that stars have a limited lifespan, but how our own system will remain perpetually I can't give scientific evidence for, I just know that it will remain, as people are to live eternally on it, and with no more death. Here are some textual references.

A generation is going, and a generation is coming; but the earth is standing even to time indefinite. (Eccl 1:4)

For all the days the earth continues, seed sowing and harvest, and cold and heat, and summer and winter, and day and night, will never cease. (Gen 8:22)

He has founded the earth upon its established places;
It will not be made to totter to time indefinite, or forever (Ps 104:5)

so my word that goes forth from my mouth will prove to be. It will not return to me without results, but it will certainly do that in which I have delighted, and it will have certain success in that for which I have sent it. (Ps 55:11); see also Rev 21:4
davidb
Right now the moon is moving away from the earth and has been for some time.

The moon is not going to fall onto the earth.

There was a time when the moon was much closer and much brighter.

Read Worlds in Collision if you want to get into the stability of the solar system.

Then go to the Velikovsky archives and read what he and Einstein were talking about.......interesting stuff.
PhilP
What would cause the moon to drift further away? Outside gravitational influences? Has the earth's rotation speed increased? What could cause that? A lot of strange happenings and signs in the heavens will be occurring before too long.
Marty
QUOTE (dwk+Oct 1 2006, 07:52 AM)
There's no need for any lunar impact. All that needs to happen is for a sufficiently massive body to pass between the earth and the moon - such as might happen if another star system collided with our solar system. This would slingshot the earth and the moon into each other.

I think would be the very least likely scenario to happen. Solar systems are LIGHTYEARS apart. That's what, a couple hundred million miles or something like that (don't feel like figuring it out at the moment)? Even in the collision of galaxies, it is extremely rare (MAYBE 1 or 2 stars out of hundreds of millions)for solar systems to be damaged or anything. That tremendous distance is just waaaaay too huge for solar systems to collide.


As to why the moon and earth are getting farther apart, momentum. The moon wanted to escape the earth's pull since they first collided, but earth's gravity is constantly pulling on the moon forcing it to orbit. The moon's momentum/velocity is greater than earth's gravitational pull, but only slightly. Which is why it's still slowly pulling away all these years later.
kaneda
The Earth has been hit by five extinction level asteroids in just over the last half billion years. Another one is expected sometime within the next several million years. Such an impact hitting the Moon could possible send it into a spiral which would eventually hit the Earth, although before then, gravitational tides would cause massive earthquakes and tsunamis as well as causing volcanoes to appear and erupt all over the world. Eventually when both bodies are within Roche's limit, both bodies would begin to break up, with lumps of Moon weighing trillions of tons raining down on the Earth.
ImmortalCoil
Almost unrelated to this topic, the subject instantly made me want to post this.

User posted image
<a href="http://www.salon.com/comics/tomo/2003/01/13/tomo/story.jpg">Full Size</a>

It is of course a political cartoon, called modern world. Probably the funniest PCs.
kaneda
Despite America being the home of Microsoft, NASA and many other great things, the cartoon strip illustrates only too well the knowledge of many Americans regarding space and science in general. Just 13% of Americans accept the scientific theory of evolution. The rest believe "goddidit!"
Lsos
QUOTE (soorejmg+Sep 28 2006, 12:25 PM)
Is there any possibility for moon to fall on earth??How can it be done>???What i mean is like some change in orbit in some way (as example) and due to good gravuitational pull of earth it can heppen.Or some way able to stop the orbital motion...

give me some way

An orbit of and object around the earth is not a fine balancing act that can be easily disrupted, especially if the object is as massive as the moon. In order to get the thing to fall to earth, we have to slow it down, and in order to do that, we would need a lot of force for a loooong time.

And then, as we slow it down, the moon would fall closer to the earth, again gaining speed, and again going into a stable orbit. Hell, even if we bring the thing to a stop so that it comes falling into the earth...by the time it would hit it would have picked up enough speed and it would miss the earth and again go into orbit. So no, it's not like you can just "nudge" the thing into a spiral towards the earth. It doesn't work that way.

Before we can even begin to speculate that a chain of events occurs, including asteroids hitting the moon and whatnot, that results in a earth-moon collision...we could sooner imagine simply another planet hitting the earth and pulverizing the whole world.

So basically, I wouldn't lose too much sleep over the moon-hitting the earth issue.
Guest_Einstein
i have spen some time researching about the moon. and i've worked ou that the moon will crash into the earth in a matter of 10 years. the pressure behing the gravitational forces of the moon has been building up for hundreds of years, and the time will come for it to unleash it's long lost energy.
Lsos
QUOTE (Guest_Einstein+Nov 26 2006, 09:31 PM)
i have spen some time researching about the moon. and i've worked ou that the moon will crash into the earth in a matter of 10 years.

Oh no! ohmy.gif
MoonWatcher
There is a good possibility now that the moon MIGHT be close for a one-way ticket to earth. The moon was so close to earth yesterday, I mistook it for a sattelite dish upon a mountain
Lsos
QUOTE (MoonWatcher+Nov 30 2006, 05:51 PM)
There is a good possibility now that the moon MIGHT be close for a one-way ticket to earth.  The moon was so close to earth yesterday, I mistook it for a sattelite dish upon a mountain

I guess its time to sell the house and go to Vegas then.
Nessus
QUOTE (MoonWatcher+Nov 30 2006, 05:51 PM)
There is a good possibility now that the moon MIGHT be close for a one-way ticket to earth. The moon was so close to earth yesterday, I mistook it for a sattelite dish upon a mountain

Pity its actually moving away
Imagination
Could the recent discovery of this 'negative anion' be correlated to the anthropic principle of life here on earth and the fact that we are losing our atmosphere due to global warming? What does anyone here make of this C6H carbon chain?
Its weird, there are 130 neutral, and 14 positive molecules within the interstellar chemical mix, and this = the Kaballah 'perfect' number. Seems C6H is a threat to this perfection that gave life.
Just wondering if there is anything like an inverse anthropic process that results when a planet like ours is suffocating itself due to the Oil Paradigm economy, paving the planet over in concrete(suffocating it), and the eradication of the premier weed.....hemp/marijuana,,,, which has a whole lot to do with carbon(cannaboids, etc).

**What happens to a planets chemical harmony with astro-chemistry, and does our magnetic resonance change when the internal balance is out of kilt?

Would not some universal like logic(what I've been calling analogous to 'immuno-logical'), dictate that the system give an answer to a 'bug' in its quantum computer, and seek to destroy it for the greater good= comet, etc.?
Palpatane
It sounds like some one has been reading Nancy Lieder.

biggrin.gif

majin3
haha, I remember reading that the moon is actually inching away from the earth due to the strong pull of external objects such as the sun. (I have also watched documentaries in school about this. And yes, they were from reputable sources. Unitedlearning, and PBS, I think).

majin3
*EDIT*

It's United STREAMING , (not united learning) sorry. smile.gif
Guest_elwood
Moon is moving away from Earth due to Conservation of Angular Momentum.
This is due to the Earth losing momentum and the Moon gaining it.
However, the Total momentum of the Earth Moon system
remains constant over time.
The Earth's rotational momentum is decreasing and the Moon's
orbital momentum is increasing.

It is NOT due to the force of gravity from external objects but it is due to
the gravitational tidal forces between the Earth and the Moon.

This process has been going on for Billions of yrs.
One can solve the equations and predict what the Earth's rotation rate was
in the past and how far the Moon was from the Earth.

270 million yrs ago the Earth rotated in only 22 hrs and the Moon
was substantially closer to the Earth.
There is also fossil evidence to support this.

This kind of situation is actually quite common and occurs for other planets and their
moons as well.

In fact it also occurs for satellites orbiting the Earth.
Just the laws of physics acting as normal here-yawn.


Einstein's Ghost
A few more of these 'SuperCollider' experiments, and our Earth-Moon system may become unstable as the gravitational energy cycle experiences preturbation.
kaneda
The Moon actually orbits the Sun. Were the Earth to vanish suddenly, it would continue to do so but as the Earth is so near, both bodies orbit each other in their path around the Sun.
zyh
The moon is moving away from Earth
Due to the tidal forces of weight [gravity] and the tangential component [vortex force] two parts, vortex force to the moon is of increasing angular momentum away from the Earth, this process of angular momentum conservation, therefore slowing down the Earth's rotation cycle. In recent years, some countries in the world after scientists and technical workers in-depth observation and research, found that the moon is gradually away from us, and will be increasingly dark. The United States and France scientists use astronauts landing on the moon in 1969 when the United States placed in the mirror on the moon to measure the results showed that in 28years to the distance between the Earth and the moon increased 1 m, The United States and France the two scientists is the use of accurate time measurement to measurement, the distance between the change, This method of pulsed laser projection, and then to the mirror reflection back on the ground detector, a return of about 2.5 seconds, Constantly measuring return by the time the changes on the distance that can change. Repeated measurements show that the earth and the moon because of the distance between the earth's surface tidal friction role annual increase of nearly 4 cm. Scientists believe the moon and under the influence of the Earth's gravitational tides produced, this tidal movement on the part of decentralized energy to the Earth's oceans, As a result of this energy - the loss of the campaign on the Moon system be affected, and this is moving away from the Earth's moon reasons. United States 2 geographers through Nautiloid Fossil study also found that the moon is moving away from Earth indeed. The two scientists observed several Nautilus existing fossil study found shellfish on the tree-ring wavy thread with the same performance, Thread at many points, though different width, but on every small wavy line growth in the 30 or so with the modern Lunar exactly the same as the number of days a month. Observed that the Nautilus, wavy lines of a long day, following a month long. Growth in this special two scientists to be greatly inspired, they observed the Nautilus ancient fossils surprised to find that the growth of every parrot the lines traced with the fossil's diminishing. And the age of the same line of Nautilus shell growth has to be fixed. Research shows that the modern Nautilus shell, the growth line is 30, the new generation of Oligocene Nautilus shell , the growth line is 26, Cretaceous Mesozoic is 22, 18 is Jurassic, Paleozoic Carboniferous is 15, Ordovician is nine, Concluded that 420 million years ago before the Ordovician, Paleozoic, and the moon around the Earth only nine days a week. Two geographers According to the Law of Universal Gravitation, such as physics theory, the moon and then calculated the distance between the Earth, Get a result, more than 400 million years ago, the Moon and the distance between the Earth is now only 43%. Scientists have also nearly 3000 to a record of pitting corrosion phenomenon on the calculation, of the findings fully consistent with the reasoning that the moon is gradually away from us.
using gravitational& vortex force the formula to calculate the moon from Earth:
Cos а ≈ 1
Me = 6 × 10 ^ 24kg; month - the distance r = 38.4 × 10 ^ 7M
Mgh = mv^2 / 2 ①
V = at ②
Moon average week: v-= 1 / π ∫ vsin ω td ω t = 2v / π ③
Angular velocity difference: q = 29/30 = 1-1/30
V-= 2at / π; ω = 1 / T
a = KGM ω/ r ^ 2 ④
Mg = GMm / r ^ 2 ⑤
111Daily the moon away from us: h = 2GK ^ 2Mq / π ^2 r ^ 2
= 2 × 6.67 × 10^-11 × 0.16 × 6 × 10 ^ 24 × 29 / [38.4 × 10 ^ 7] ^ 2 × 3.14 ^ 2× 30
= 8.51 × 10 ^- 5m
From a year: 8.51 × 365 × 10 ^- 5 = 0.031m
This is close the measured value
Reference: “ mysterious vortex force - gravity partner ”Books Author: Zhuyonghuan Publisher: 21st Century Publishing House - China 2005-3
With Cavendish torsion balance experiment measuring gravity tangential component "and" physical communications 2002.9 "


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