had the eletrons lined up in a plane (like solar system), would our world be 2d??
964379
The individual electrons do not travel in planes or anything resembling a planetary orbit.  Each electron associated with an atom "occupies" a space whose shape depend on how many other electrons are associated with the same atom.  "Occupies" is in quotes because it is only an approximation of the situation.  In a sense, any particular electron inhabits the entire universe, but with a much higher probability of being found in certain regions than in others.  If you made a really sophisticated graph of the probable locations of the electron, using an infinitely large clear crystal, and staining it some shade of black, with the darkness/opacity of the black depending on the probability of finding the electron there, you would have a picture of the space "occupied" by the electron, sometimes called an electron cloud.  For the single atom around a hydrogen atom, the cloud would be a spherical blob, very dark around the nucleus, getting somewhat transparent further from the nucleus, and getting fainter, but never completely clear as you moved further from the nucleus.  The shape of the clouds around a helium atom are somewhat like two tear drops, with their pointy ends near the nucleus.  The shapes of the clouds are different for different elements, and they are changed when an atom is part of a molecule with other atoms.  But the clouds are never planar.
654251
No, because the charges will have to distribute to opposite sides of the strip (as if it was a loop rather than a mobius strip), however since we are dealing with a one dimensional object (essentially), the charges cannot do this.
736681
During my Time Travels I did do some Intergalactic Exploration. When I was in Grid 946 Quadrilateral 47, the solar system was similar to your solar system. Basically we ( my Friends and myself) observed than any planetary structure is protected from outside forces due to Gravity and Atmosphere. Moons, as you are accustomed to calling them lack those two important aspects, thus, any outside forces bombard those structures and they similar to the moon as larger structures with gravity and atmosphere are similar to Earth. It simple Physics according to Earth's Concept. Once your Scientist understand Dimensions, then you understand the many things you now consider mystery.
378956
Of course. Consider a single hill shaped almost spherically. This is the upper hemisphere of a sphere, so the surface area, given some radius r, will be half the surface area of the entire sphere, which is (1/2)*(4*Pi*r^2) = 2*Pi*r^2. \nThe projection of the sphere onto the plane is a disk, with area Pi*r^2, less than the surface area if the flat ground was instead covered by a spherical hill.
316623
The most recent investigations (WMAP) about the shape (geometry) of our universe show that it is FLAT, meaning that it will expand infinitely, parallel lines never meet, etc.,.\n\nhttp://map.gsfc.nasa.gov/m_mm/mr_content.html
455080
No, I'm Not. but, here's an interesting theory as to their Guidance System to Find Earth; The Pyramids of the Eastern [Egypt] Hemisphere, and of the Western [Mexico , Central America] Hemisphere are Aligned in Such a Way, and Constructed of the Proper Materials that the Energy of the Earth's Magnetic Poles are Naturally Focused Upon the Pyramid Structures. The Claim is that the Earth Resonates at an Inaudible Frequency of 8 Hz. That, combined with the Polar Magnetic Energy Focused onto all of the Earth's Pyramids Generates a Beam of Energy which can be Detected Far Out into Space, well Beyond Our Solar System. NASA Supposedly has Proof of this from Voyager I and II , which are both beyond our Solar System. Supposedly there is also Proof that if the Pyramids had been only a Few Miles Apart from where they were Built, and not Made of the Same Materials of which they were Built, they would not be able to Emit an Energy Field that can be Detected, Perhaps Light Years beyond Earth! If that's all a Coincidence, along with the Prehistoric Drawings of Space Vehicles found on the Walls of Caves in France, then so be it. Also, Read the Bible, "Ezekiel saw the Wheel, way in the middle of the Air"
966439
Not precisely, but that gives a very good first approximation. The planets generally orbit the Sun in the plane of the Solar equator, which is what you would expect. There are variations, most notably that of Neptune, (and until it was demoted to "dwarf planet", Pluto.\n\nThe plane of the Solar equator is inclined to the plane of the Earth's equator by approx. 7 degrees, and this means that the sun, and all the planets, follow this path, which is called the "ecliptic".It gets that name because the apparent path of the moon crosses the ecliptic at two points, called nodes, and it is when the moon and sun are both at or very near one of these nodes in their apparent motion that an eclipse, either solar or lunar, occurs.
302598
An interesting question. The question that may comes to \neveryone's mind is "IS the earth round?"  \nAnd the answer is no, at least \nnot perfectly round.  But it is round compared to your average cube, that is \nfor sure!  Now, my understanding of how solar systems form is pretty \ninadequate; all I can tell you is what I see on "Nova."  But basically, I \nguess it has to do with gravity, which is a CENTRAL FORCE.  What that means is \nthat gravity pulls things together along a straight line, and the more massive \none of the things is, the stronger it pulls.  When the earth was forming, it \nwas basically a big ball of dust left over from an exploded sun (a supernova).  \nGravity caused a lot of the matter to condense into a big fiery ball (our \nsun), but some of the dust was far enough away from the Sun so that the \nstronger forces were between planetary dust particles and not the sun.  SO, \nthey swirled together into a ball.  You can see something similar when you \nmake a painting with one of those "spin-art" machines; you put a card on the \nspinner, which whirls around real fast, and then you squirt paint on the card.  \nThe whirling causes the paint to go out away from the center (this is like the \nexplosion of the supernova) and droplets go out along an interesting path \nuntil they stop, which happens when the spinning force is equal and opposite \nto the force which attaches paint to the card (this is like gravity).  Now, if \nthe force attaching paint to the card were not so strong,eventually the drops \nwould get bigger - "planets."
1125576
No.  It would continue on for a little while, but our solar system is able to support the elements that it does only because of the specific balance of energies it has.  The bullet would enter into a region of space that the metal would be exotic to, and all the protons and neutrons and electrons would get pulled apart and the atoms would balance out with their surroundings, whatever elements those might be.\n\nRelativity isn't the way of the Universe dudes.  It'll never be able to explain the state of the atoms because it was based off of what we were able to observe in our solar system (and I can't stress this next part enough) when it's in this present energy state.  The Universe is filled with all sorts of varying strengths of these currents, which give rise to the magnetic fields we see everywhere.  \n\nDouble-helix galaxies (like our double-helix DNA) shaped by magnetic fields and Birkeland currents are out there, so this should help the scientists figure out that big Theory of Everything they are still searching for.  We couldn't detect the Sun's magnetic field for the longest time because it was too big for our instruments.  Scientists can't tell that the Solar Wind isn't electrically neutral because it's so big and the difference in electrons too small to detect.\n\nThey'll realize what's up some day, but only because they'll have to.  It'll be after some powerful lightning storms sweeps over our planet and the powerful bolts of lightning, attracted to the metals and things we throw away, crushes our garbage dumps and landfills into our water table and poisons it.
600264
Two Hemisphere...may be
589478
No. The Earth is too small from the vantage point of other planets and too big from the Moon to cause an eclipse.
787638
Apparently not.  http://www.cosmosmagazine.com/node/818
527767
Without the fourth dimension, no three-dimensional object would exist.  So the simple answer to your question is YES.\n\nThe more complicated one is SOMEWHAT.\n\nThere is no true stationary object in the universe that we know of.  Even an atom held at absolute zero still has velocity in that the medium it's being held in is still moving along with the rest of the earth, solar system, galaxy, etc.  Anything that moves through space is also moving through time.  So, without time (widely regarded as the fourth dimension), no motion would be possible.\n\nIf no motion were possible, then the ability to measure and quantify that three-dimensional object would also be impossible, and thus the whole question becomes paradoxical and irrelevant.\n\nConfused yet?  I am... :)
986050
I think you were watching a sci-fi show, maybe artist's conceptions of planets in other systems. We can confirm that the other planets exist by watching for gravitational anomolies but our tech isn't up to the task.
1023489
No.  But we see only the side that faces earth.\n\nHere's a good diagram that explains it better than I can...\n\n\nhttp://www.windows.ucar.edu/tour/link=/the_universe/uts/moon2.html
613637
NO.\nTechnically speaking if you travel on the earth in on a single vector you would not end up in the same place because in order to do so you would be constantly changing your vector. Technically speaking.
82957
Maybe. It seems that in a universe filled with billions of galaxies, each with billions of stars, each with a potential to have a planet with life around it, that at least a few other planets would have to have life. It is not reasonable to suppose this is the only one where this ever happened. \n\nHowever, you asked about "creatures like humans". This is possible, but no where near as likely as there simply being "life" on other planets. The forces of natural selection ("evolution") can develop life in a myriad of possible shapes, and there is no guarantee that human-like lifeforms will evolve anywhere else. By some points of view, it is virtually impossible since a great many events happened over billions of years that resulted in us looking like we do. There might be life out there, and even intelligent life, but it is probably very different from us. \n\nHowever, another way to look at it finds the possibility that there is life like humans out there. Think about this: how many ways are there to get around: swimming, crawling, brachiating (swinging from trees), flying, walking. Maybe there are a few more that we don't see on Earth. Legs are one of the best ways of getting around, so it seems likely that, if there are many different worlds with life, a large proportion of those worlds have creatures with legs. This same logic applies to arms and hands--how many effective ways are there for manipulation of objects? Tentacles, cilia-like graspers, lobster claws, hands, and probably more. Still, something like hands at the end of flexible or jointed extensions like arms is a very good means of allowing a creature to grab things and shape them, so it seems likely that something hand-like will also appear. And then there are the obvious advantages of having the head on top of the body, for standing upright, for having two eyes set horizontally, etc... \n\nWhat I am getting at here is that there might be a million million ways that lifeforms can be shaped, but perhaps there are only a limited number of forms capable of inventing and building cities or ships or plows etc... Since the ability to create these things have such obvious advantages, life might often be "channeled" by the force of natural selection into the forms that allow technology, and therefore a human-like form might be seen more than just here on Earth.