Like it says: How many permanent NATURAL moons (not rocks) does the Earth have? (seriously!) I won't put the answer right away since people are going to read it and post differently first... But, I am willing to bet most people don't know the real answer... ;) (don't cheat and look up the answer first)
How many moons does the Earth have? (seriously)
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How many moons does the Earth have? (seriously)
690 moons. The white rock in the sky is an illusion.0%41 moon - The Moon.0%422 moons - The Moon and another smaller moon.0%73 moons - The Moon and two smaller moons.0%74 moons - The Moon and three smaller moons.0%05 moons - The Moon and four smaller moons.0%06 or more moons - The Moon, and TONS of uncountable smaller moons.0%9Tags: None -
i voted 0
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I think the definition of a moon is that it is permanent. Well, at least for 100,000,000 years. I think there's a moon around Jupiter in a retrogade motion which is against the tidal forces of the parent planet, so it is being pulled into the planet (the orbit is getting smaller). Eventually, it will reach the roche limit, and break apart from tidal forces, and form another ring. So, it's not really permanent, but you know... 100,000,000 years is good enough to be considered permanent.Originally posted by Tipsy
We talking here about perm. moons or perm. and temp. moons?
I hope this clears things up.
Roche limit (rsh)
n.
The smallest distance at which a natural satellite can orbit a celestial body without being torn apart by the larger body's gravitational force. The distance depends on the densities of the two bodies and the orbit of the satellite.Last edited by Juge; 09-16-2002, 05:44 AM.Comment
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Zero. That satellite we call "The Moon" has only been around for a couple of billion years (not as long as the Earth) and was either a wandering asteroid/comet or is a large fragment of the earth that came about as the result of a comet/asteroid hitting the earth. In approx 1986 astronomers discovered another "natural" satellite but that turned out to be a wandering asteroid that got picked up by the Earths gravitational field, and the one they found a few months ago is likely to be an old rocket booster
Either that or the aliens put them there, just like the implant in my nose.Comment
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Dude, dont give away all the info, yet.Originally posted by volante
Zero. That satellite we call "The Moon" has only been around for a couple of billion years (not as long as the Earth) and was either a wandering asteroid/comet or is a large fragment of the earth that came about as the result of a comet/asteroid hitting the earth. In approx 1986 astronomers discovered another "natural" satellite but that turned out to be a wandering asteroid that got picked up by the Earths gravitational field, and the one they found a few months ago is likely to be an old rocket booster

oh, and if you dont consider the Moon a permanent moon, then you would have to consider that no moons in the solar system are permanent. In fact, the planets aren't permanent, either, so they aren't planets. And the sun won't be around in 10 billion years, so it's not a star, etc. Am I right?Comment
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So my comment wasn't that far off then.
When you post a question like that you'll need to understand that some of us will take it to the enth degree and some of us won't.
For that reason alone a question of this magnitude will never receive the full attention it deserves because quite frankly, we are not your local nerd club on summer break just awaiting a question to challenge and stimulate our aptitude.
Time to read another one of your brothers study guides or are you ready to discuss the reasons why 1 + 1 doesn't always equals 2
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I seems to remember a post from Nina saying that she likes nerds.Originally posted by marty
For that reason alone a question of this magnitude will never receive the full attention it deserves because quite frankly, we are not your local nerd club on summer break just awaiting a question to challenge and stimulate our aptitude.
If that is the case, then I am a nerd and proud of it
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I think there is a alien base in the moon so it s not a real moon so there is 0 moon
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Huh? I asked how many natural moons the earth has.Originally posted by marty
So my comment wasn't that far off then.
When you post a question like that you'll need to understand that some of us will take it to the enth degree and some of us won't.
For that reason alone a question of this magnitude will never receive the full attention it deserves because quite frankly, we are not your local nerd club on summer break just awaiting a question to challenge and stimulate our aptitude.
For all the 'nerds' (nothing wrong with being one) who read into this further: Moon is defined. Earth is defined. Natural Moon is defined. Obviously, I am speaking about the present, not 1,000,000,000 years ago, so even the time frame is defined sufficiently. There is nothing more I needed to define.Last edited by Juge; 09-16-2002, 06:52 AM.Comment
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Thrawn's right about the alien base. This is why noone's been up there for a while now, they were warned off back in '69 and finally got the message.. Here ya go:
UFO's Confirmed
All true.Shomer fuckin shabbasComment
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I bet this gay thread dies soon if you don't give your "answer".
Earth has one moon.
I guess there are all kind of theories:
THE moon is actually slowly moving away from the Earth - eventually this could cause it to break free from Earth's gravity -> we have 0 permanent moons
On the other hand -> thousands of satellites do orbit earth. Are they permanent? yes, some are as permanent as the moon. Are they as big? No. But define big ENOUGH.Comment
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Nothing in motion is permanent.
Anything in orbit, is not permanent.
Intertia and gravity will always be stronger than dirt.Last edited by Fletch XXX; 09-16-2002, 07:35 AM.
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The first is still a moon, doesn't matter if it is slowly moving away.Originally posted by mika
THE moon is actually slowly moving away from the Earth - eventually this could cause it to break free from Earth's gravity -> we have 0 permanent moons
On the other hand -> thousands of satellites do orbit earth. Are they permanent? yes, some are as permanent as the moon. Are they as big? No. But define big ENOUGH.
The second (satellites) are not moons if they are man made and/or too small. Not sure how big it has to be to be a moon, but it's probably something like a few miles in diameter.Comment
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I voted one, there is "the moon", and there is an asteroid that we picked up that is orbiting us. There is no guarentee that it will continue to orbit us forever, so it is not a perminant moon. It may stay there for 1000 years, 5000 years, or forever. There are no guarentees.
ZoiNk"People can have the Model T in any color - so long as it's black." - Henry FordComment
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I think this thread has to be one of the more interesting ones. I am going to play safe and go with the answer that 99% of the population would give that there is one moon.
I presume that this is the wrong answer hence why this thread has been created.Comment
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Sophomore year in high school, Algebra 2, our hot shot student teacher proved exactly that to us. Don't remember how. Didn't care then, don't care now.Originally posted by marty
Time to read another one of your brothers study guides or are you ready to discuss the reasons why 1 + 1 doesn't always equals 2
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The moon is slowing moving away, but slowing down. It will eventually stop. This is because the moon is slowing the rotation of the earth from tidal forces, as the earth successfully occomplished on the moon. It has a tidal lock on the moon - the forces of gravity on the near side are greater than the forces of gravity on the far side. The process of this lost energy of rotation is translated into distance of angular momentum. When the rotation slows and stops, so will the increased radius of the moon's orbit. The only way we'd lose the moon is if it moved far enough away that another planet grabbed it away... it can never escape earth's gravity any other way. Even if there was an explosion on the moon, like in some movies, we wouldnt lose the moon unless it accelerated at escape velocity (11 km/sec), or unless it got far enough away that another planet's gravity was stronger than earth's and took it away.Originally posted by mika
Earth has one moon.
I guess there are all kind of theories:
THE moon is actually slowly moving away from the Earth - eventually this could cause it to break free from Earth's gravity -> we have 0 permanent moons
Besides, it wasnt meant as a trick question - the moon is there, it's real, it's at least 1 moon, so i shouldnt have put the option of '0 moons' - my apologies. it must have made people think it wasnt serious, so that was dumb.
Definition:Originally posted by mika
On the other hand -> thousands of satellites do orbit earth. Are they permanent? yes, some are as permanent as the moon. Are they as big? No. But define big ENOUGH.
moon (mn)
n.
A natural satellite revolving around a planet.Comment
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Define satellite thenOriginally posted by Juge
Definition:
moon (mn)
n.
A natural satellite revolving around a planet.
(n.
Astronomy. A celestial body that orbits a planet; a moon. ?)
Common sense says to me that a satellite has to be large enough to be considered a moonComment
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I knew I shouldnt have added the word permanent. Someone asked that, so I changed the post to say permenant.Originally posted by Fletch XXX
Nothing in motion is permanent.
Anything in orbit, is not permanent.
Intertia and gravity will always be stronger than dirt.
All I meant was a current, naturally occuring satellite. That's the definition of a moon.Comment
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Again, I shouldn't have said permanent. Some people think it means over 5,000 years, some people think it means over 1 billion, and some even more than that.Originally posted by ZoiNk
I voted one, there is "the moon", and there is an asteroid that we picked up that is orbiting us. There is no guarentee that it will continue to orbit us forever, so it is not a perminant moon. It may stay there for 1000 years, 5000 years, or forever. There are no guarentees.
ZoiNk
But, the second asteriod you mention is the earth's second moon, called Cruithne:
http://www.google.com/search?q=Cruit...=Google+SearchLast edited by Juge; 09-16-2002, 12:36 PM.Comment
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Thank you... I only started it because I knew it would be interesting, and that 99% of the people were unaware of Earth's second moon:Originally posted by Krome
I think this thread has to be one of the more interesting ones. I am going to play safe and go with the answer that 99% of the population would give that there is one moon.
I presume that this is the wrong answer hence why this thread has been created.
http://www.google.com/search?q=Cruithne
(i was TRYING to get the URL straight to the page, but it wont post properly... why?? the board is changing the url to blahblahblahblah)
There is another satellite orbitting earth right now that they just found, but think it's just a piece of space junk. If confirmed that it's not (unlikely), then it will be the 3rd moon.Last edited by Juge; 09-16-2002, 01:32 PM.Comment
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Correct me if I'm wrong but isn't it orbiting the SUN just like earth does. I mean it's an asteroid which is using the same orbit than Earth. It's not orbiting EarthOriginally posted by Juge
Thank you... I only started it because I knew it would be interesting, and that 99% of the people were unaware of Earth's second moon:
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I just don't wana see anything brown comming at me from the moonThis dog, is dog, a dog, good dog, way dog, to dog, keep dog, an dog, idiot dog, busy dog, for dog, 20 dog, seconds dog!
Now read without the word dog.Comment
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That's what I saw. It says it is in a 1:1 resonant orbit with the Earth, which means it goes around the sun 1 time for every 1 time we go around the sun. I think the term "second moon" is only because it approaches so closely (.1AU). Reading about it and watching the simulations, it is clearly not orbiting the Earth as we keep passing through its orbital plane.Originally posted by mika
Correct me if I'm wrong but isn't it orbiting the SUN just like earth does. I mean it's an asteroid which is using the same orbit than Earth. It's not orbiting Earth
SpaceAceComment
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No, you are wrong. Earth's 2nd moon is orbiting the Earth, otherwise it would not be an Earth moon.Originally posted by mika
Correct me if I'm wrong but isn't it orbiting the SUN just like earth does. I mean it's an asteroid which is using the same orbit than Earth. It's not orbiting EarthComment
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The Earth-Moon pair is in orbit around the Sun. Their center of gravity is what travels in an ellipse - neither of them actually do.Originally posted by mika
Correct me if I'm wrong but isn't it orbiting the SUN just like earth does. I mean it's an asteroid which is using the same orbit than Earth. It's not orbiting Earth
The Moon is in orbit around the Earth.Comment
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An Earth moon has to orbit the Earth. I thought that was obvious to everyone? Why are they calling this Earth's 2nd moon if it does not orbit Earth?Originally posted by SpaceAce
That's what I saw. It says it is in a 1:1 resonant orbit with the Earth, which means it goes around the sun 1 time for every 1 time we go around the sun. I think the term "second moon" is only because it approaches so closely (.1AU). Reading about it and watching the simulations, it is clearly not orbiting the Earth as we keep passing through its orbital plane.Last edited by HQ; 09-16-2002, 01:26 PM.Comment
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No, you just stated that a satellite is something that orbits a planet... A TV satellite is a satellite. There is no size restriction.Originally posted by mika
Define satellite then
(n.
Astronomy. A celestial body that orbits a planet; a moon. ?)
Common sense says to me that a satellite has to be large enough to be considered a moon
Again, a Moon is a natural satellite.Comment
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The simulations seemed very strange to me, as well... But I don't think that just beacuse it is close to the Earth's orbit around the sun that it is considered a moon of Earth's... It should be shown to orbit the earth. There are two moons going around Jupiter or Saturn that swap places every orbit when they get close, so they are sort of orbting each other according to the definition you gave there... but they are considered two moons of Jupiter (or Saturn, I can't remember which). It's really weird... To be honest, according to the sims, this second moon does not appear to be a moon of Earth's... I wish I knew more about it. They have categorized it as Earth's second moon, though... back in 1986, I believe.Originally posted by SpaceAce
That's what I saw. It says it is in a 1:1 resonant orbit with the Earth, which means it goes around the sun 1 time for every 1 time we go around the sun. I think the term "second moon" is only because it approaches so closely (.1AU). Reading about it and watching the simulations, it is clearly not orbiting the Earth as we keep passing through its orbital plane.
SpaceAceLast edited by Juge; 09-16-2002, 01:26 PM.Comment
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Scientifically it's not Earth's second moon. Read the FAQ next time
"Does asteroid 3753 Cruithne orbit the Earth like a moon or satellite?
No. The asteroid's behaviour is more complicated than that: it doesn't orbit the Earth, but rather it shares the Earth's orbit. The relationship of a moon to its planet is called a two-body because there are only two important players (ie. the moon and the planet). However, in the case of Cruithne, the Earth and the asteroid both share the same orbit about the Sun, but are choreographed in such a away as to remain stable and avoid colliding with each other. This is called a three-body relationship as there are three main players: the Earth, the asteroid and the Sun. Please see the 3753 Cruithne main page for more details on the asteroid's motion. "
Case closed. Stupid poll
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Did some one say this was a Gay thread ?? Well just add one more

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For promo opps contact jfk at fubarwebmasters dot comComment
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It is obvious that actually BE a moon it would have to orbit the Earth, but that does not appear to be the case.Originally posted by HQ
An Earth moon has to orbit the Earth. I thought that was obvious to everyone? Why are they calling this Earth's 2nd moon if it does not orbit Earth?
SpaceAceComment







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