is there any sun in cosmos having two planets in same orbit?
336486
No.  \nHere is why: Although the list of known extra-solar planets is growing, to my knowledge, none have been described where there are two in the same orbit.  In terms of solar planets (ie us) although it is true that two planets in our solar system cross orbits, this is not 'sharing' the same orbit (at least in the sense of your question I think).  It seems possible enough, but has not yet been described.
627517
The sun is the center of the solar system, revolving around it are the nine planets namely: mercury, venus, earth, mars, jupiter, saturn, uranus, neptune and pluto.
800316
http://en.wikipedia.org/wiki/Pluto\n\non 24 august 2006, the international astronomical union reclassified pluto.\n\npluto does orbit the sun, is ball-shaped and is not a satellite, but it does not have an isolated orbit (a bunch of other similar bodies have similar orbits.) so it is not a planet.\n\ni have been waiting for this since i was about ten when i learned that pluto didn't fit the pattern set by the major bodies in the solar system so it was an anomaly. it just felt "out of place". now that astronomers have found hundreds of other bodies with similar orbits, classifying "134340 pluto" as a planet is even more irrational. i feel somewhat satisfied, but i don't know how long this will drag on tho. many planetary astronomers are satisfied that the definition is rigorous enuf. i can accept that the definition is flawed, but i can not accept that "134340 pluto" is a planet.\n\nthis was the right thing to do, believe me. this does not change anything about pluto or the solar system. this just corrects the mistake of classifying pluto as a planet initially.\n\nthis same thing happened has happened before. in 1800, an astronomer found a body orbiting the sun between the orbits of mars and jupiter and thought it was a planet. astronomers finally stopped classifying them as planets after they found several other bodies with similar orbits, and no one thinks ceres, pallas, juno, and vesta are planets today.\n\nmany astronomers consider pluto and charon to be a binary system, but two small bodies orbit that system. they are called nix and hydra.\n\nincidentally, "134340 pluto" was never a moon of neptune. neptune did capture triton. this is why triton has a retrograde orbit
435134
So, I don't think we have the technology to actually know if two atoms are identical.  Right now, we just think they are based on various observations.  It could turn out that each atom is actually a mini solar system like you suggested or it could turn out to be just identical atoms.  Science is just a series of guesses based on our current observations.  It changes all the time.
28842
it depends on your place in space. are you in a straight line with a planet and sun,  then there is night and vice versa
368925
Other planets since all nine planets revolve around the sun so when you're on one side of the sun,other planets are probably on the other side!
1048885
The body of planets, their moons and other objects that orbit the Sun.
782519
read http://en.wikipedia.org/wiki/Pluto\n\nno, pluto does orbit the sun, is ball-shaped, does not have an isolated orbit (a bunch of other similar bodies have similar orbits.), and is not a satellite so it is not a planet.\n\ni have been waiting for this since i was about ten when i learned that pluto didn't fit the pattern set by the major bodies in the solar system so it was an anomaly.  it just felt "out of place".  now that astronomers have found hundreds of other bodies with similar orbits, classifying "134340 pluto" as a planet is even more irrational.  i feel somewhat satisfied, but i don't know how long this will drag on tho.  many planetary astronomers are satisfied that the definition is rigorous enuf.  i can accept that the definition is flawed, but i can not accept that "134340 pluto" is a planet.\n\nthis was the right thing to do, believe me.  this does not change anything about pluto or the solar system.  this just corrects the mistake of classifying pluto as a planet initially.\n\nmany astronomers consider pluto and charon to be a binary system, but two small bodies orbit that system.  they are called nix and hydra.\n\nincidentally, "134340 pluto" was never a moon of neptune.  neptune did capture triton. this is why triton has a retrograde orbit.
741583
You are right.  Neptune and Uranus have only been visited by Voyager 2.  Jupiter and Saturn have been visited by multiple probes however.
12842
Our Sun is a star and is thus made of the same materials (in general) that the rest of the stars are.\n\nBut because of different ages and environments, there are probably no two stars that are exactly alike.
85444
Earth rotates. Sun on one side.
726348
Well, that is one hypothesis, which is "conjecture", which is just to say it's a "great big guess".  No astronomical explanation has thus far been a satisfactory explanation, because the hypotheses fail to explain "why" comets orbit the Sun clockwise, while everything in our Solar System rotates counter-clockwise along with the counter-clockwise rotation of the Sun.\n\nMy analysis has determined that our Solar System and the Sirius Binary System are interlocked in an electromagnetic deadly dance of death in which the two systems cyclically and recurrently interpenetrate through each other every 12,000-year period.  Hence, our Solar System is on a collision course with the Sirian System.  This transversion is an extinction level event that I have identified as the Sirian-Solar Reconvergence.  The Sirian Binary rotates clockwise, thus comets are dislodged debris from the Sirian System captured within our Solar System from each Reconvergent event in which the comets retain their original clockwise rotation due to their immense velocity that cannot be overcome by the rotational influence of our counter-clockwise system. \n\nThe Sirian-Solar Reconvergence also explains all the crater impacting that has scared all the solid-body planets.  As the cosmocataclysm ensues all the debris from the various debris belts in both systems dislodge and rains down mass celestial bombardment on every object in both systems, particularly when the Reconvergence reaches its critical vertex of transversion.\n\nAdditionally, the Sirian Solar Reconvergence would completely explain why the planet Venus spins clockwise and backwards (opposite to the spin of the other planets) while revolving around the Sun counter-clockwise, thus creating the unusual phenomenon of one day being one year, because it completes one revolution in one year.  Clearly this is an indication that Venus was originally a planet torn out of its clockwise orbit in the clockwise Sirian System during one of the Reconvergence, and was captured by our Sun.\n\nThe reason why the two systems are locked in this process is because they were formerly unified as one solar system; our system was originally the Osirian Trinary Stellar System.  Sirius B is our original paternal star, Sirius A was the outer star that orbited the body of the system, our Sun (Sol) was technically Sirius C, originally a binary companion with Sirius B at the core of our former Trinary System, and there were originally a total of eleven planets.  The split occurred because Sirius B after depleting its helium as a Red Giant exploded into a Nebula Discontinuity Event, creating the Local Compression Bubble and precipitating the celestial dynamics that tore the system in half.  The two halves journey off to their greatest distance, and then invert and return to the path around the galactic center that they were originally blown apart from, being the recyclic event of the Sirian-Solar Reconvergence.  This cosmocataclysm wipes all human civilization off the face of the Earth and catapults Mankind back to a State of Neobarbarism to begin the slow and incremental process of re-civilization all over again.  It is also responsible for suddenly laying down the Geological Column and entombing the charred bones of beasts and men into fossilization within the stratification, because the event is so violent, catapulting the Earth out of its orbit and thrusting the oceanic waters out of their basins, overrunning the continents.\n\nAs our Solar System and the Sirian System near ever closer, signs of the next Sirian-Solar Reconvergence are mounting, being the environmental deterioration of the terrestrial environment, increased volcanism on the oceanic floors that is heating up the seas and affecting the climatic temperatures, the melting of Earth’s and Mars’s polar ice caps, new red spot storms on Jupiter, the addition of a third belt to the Van Allen Radiation Belts that surround the Earth, the vio
1150795
occasionally, mercury and venus do individually come between the earth and sun, but i have never heard that they have both been there at the same time.\n\nlook here for venus\nhttp://skyandtelescope.com/printable/news/article_1279.asp\n\nlook here for mercury\nhttp://skyandtelescope.com/printable/observing/objects/planets/article_953.asp
717111
No.\n\nGalaxies are groups of stars and planetary systems.\n\nA single sun (even ours) is not powerful enough to have a galaxy rotate around it (gravitationally speaking).\n\nDoesn't work that way.  We move around inside the galaxy, not the galaxy around us.
29462
No.  The sun is one of the stars. The earth and the other planets move around the star we call our sun.
29403
The planets were formed by the same cloud of swirling rocks and dust, so when they came together and formed the planets they were all going the same direction. And actually, since the sun was made from the same stuff, it actually rotates in the same direction, though it is hard to tell because there are no surface details to see from earth without assistance to see the movement of the sun. I think astronomers see the rotation of the sun by watching sun spots. \n\nAnd actually they do not all lie in a flat plane. There is actually a small difference between the orbital planes of each of the planets.
167490
The arrangements in our solar system is(from the Sun):Mercury, Venus, Earth, Mars, Jupiter, Saturn, Neptune, and Pluto.\nNote:Pluto's orbit isn't similar to ours.\nThe solar system also includes an infinite number of stars, whom biggest is the Sun. There are plenty of Black Holes in the solar system. The gravity pull of the Black Holes are so strong, they can suck in nearby stars.\nThere are also plenty of stars bursting. We call the explosions Supernovas. After the Supernova, the star becomes a White Dwarf. There are also plenty of comets around. Among them, Halley's Comet is one example, passing over earth in 76 years at a time. Its orbit is 18 degrees to the ecliptic.\nHope this is useful and answers ur question!:)