What would happen if earth had no moon? Two moons? Three?
967927
No Moon: Very Very Dark at night, The oceans would to move.\n\n2 Moons: Bright, the oceans and weather would be in chaos\n\n3 Moons: Probably chaotic unhevels major differences from now\n\nThe Moon affects everything on earth: From when planets bloom, the when the seasons change, to tidal movements, to Animal behavior, to cosmic catcher(the moon traps: 80% of all meoters inbound for earth)\n\nThe list is profounding\n\nGood question\n\nI added a few links to put it in science terms
1105769
Having their own moon might affect it...
283486
to imagine it, it would be very difficult. I suggest you experiment on it. Try using 3 ball, one for the sun, one for the earth, and another for the moon. Now do hte things you think. \nBut for me, the earth spins on its axis east to west and revolves the sun at east to west direction. EWhile the moon also revolves the earth at an east to west direction.
491644
Interesting question.  We would no longer have the moon's tidal forces, so no more high and low tides.  This would destroy the vast ecosystems along shorelines that depend on tides for their existence, and could well cause very negative effects on the Earth's entire balance of life, since these areas produce the most nutrients.
381469
I assume that the question is How many planets do not HAVE moons. If that is the case, then the answer is 2, Mercury and Venus. All of the other planets have at least one moon.
535923
um...There wouldn't be anything, there would be no earth, the sun will increase in diameter causing the temp. on earth to rise VERY high, and people will finally build a powerful rocket to go to another planet that's similar to earth or mars...
735551
The Earth is a relatively poor planet so we can only AFFORD one moon. Some larger planets with a thriving interstellar economy can afford several large moons and a few spares. There is a planet in the Goografron galaxy that is so rich everyone has their own moon.  The space around the planet became so crowded that it blocked out their two suns, now their economy is collapsing.  Be thankful we just have one.
222144
Two objects will orbit one another indefinately unless disturbed.  The man made satellites that return to earth orbit to closely and are so small, atmospheric drag and solar wind eventually cause their orbits to decay.\n\nThe moon is large enough are far enough out, these factors don't come into play.  The primary force now is tidal friction, which causes the orbit to slow, and therefore expand, by a fractional amount each year.  \n\nDon't worry about losing the moon, though.  The sun will expand into a red giant, swallowing both earth and moon long before this happens.
813348
No one is really sure yet. Astronomers and meteorologists are working everyday to figure out what is going to happen but the only theory is that....\n1- The earth stops rotations and can cause us to die\n2- The earth can get compressed into a small cubical.\n3- Nothing at all and we still live... which i hope is this.
1142453
Well it's a natural phenomenon. If moon is not rotating then some thing else any where else in our solar system will do something to compensate for this energy.\n\nRemember : Energy can neither be created nor be destoyed and according to the energy conservation principle this energy will have to be redirected . So it can be millions of other possibilities :)\n\nLike days will be shorter ans earth rotates fast to use that excess energy or something like that.\n\n:)
727284
Nothing.  You can see no man-made structures from the Moon.  You can't see the great wall of china; it's a myth.
308015
Short answer: nothing would happen.\n\nLonger answer:  Think of it like this.  The oceans make up 2/3rds of the surface area of the planet, approximately.  They are much, much deeper than tall buildings, trees, or even mountains.  Also think about water displacement- the volume of water that something displaces is equal to its own volume.\n\nRising sea levels are caused, mostly, by melting polar ice caps.  So how big are these ice caps and how much is melting?  The ice caps cover the Arctic (the size of a major continent) and most of Antarctica, which together is probably the size of two major continents.  Worst case scenario- most of it melts.  Let's be optimistic- 10%.  Can you really imagine the boats that we have adding up to 10% the volume of an entire continent, let alone two?  No, it's ridiculous.  A mountain or two, sure, plausible, but something the size of Texas?  No.  Absolutely not.
503710
no moon occurs when moon is covered by the shadow of earth,\nsimilarly on full moon moon is not covered by the shodow. all the phases of moon are caused by the shadow of earth which falls on moon bcoz of sun
546510
Here is a quick page of info for ya. Hopes this helps.\n\nhttp://teacher.scholastic.com/researchtools/articlearchives/space/moon.htm
365770
i dont' know what causes the rotation of an orbiting planet, but the moon would definitely have gravity even if it didn't spin.  that dude was full of crap.  if anything, the spin would cause things to fly off.
189211
The tides would f*ck over the coastlines and werewolves would become extinct.  Plus, with my luck, a zillionth of the moon would hit my car.
1001650
It's absolutely possible, and I believe there's a chance that at one time there was indeed more than one moon.  Who's to say that at one time the earth didn't have two moons, but one, for some reason, found its orbit altered into a decaying one, where it eventually crashed into the earth.  Perhaps a large meteor or some other galactic mass crashed into this deceased moon and hit it with enough force to cause this change.  \nThere are many theories as to how our moon was formed, none of which are proven to be 100% true.  Given the uncertainty, the possibility MUST exist that there may have been more moons.