When we look at another plannet from earth it appears to be twinkeling?
825270
Planets and stars can both twinkle, its called astronomical scintillation.  In short it is caused by fluctuation in air density and temperature.  Since stars and light both send light to earth (planets reflect a stars light whereas the star produces it's own) the twinkling effect can be seen in either.  And thus if you were standing on another planet, it IS possible that earth would appear to twinkle.  It's not guarenteed, but if the light coming from earth passed through some varying densities and temperatures it could appear to twinkle.  Refer to this article for more on "twinkling":\n\nhttp://en.wikipedia.org/wiki/Scintillation_%28astronomy%29
738575
They will be seen as streaks or hairlines on a long exposure plate. This is because they move vastly faster relative to Earth than the so-called "fixed stars".
266887
Before the NASA satellite orbiting the sun had it's photographic information "pulled" from the web, it showed two distinct and large objects executing a right-angle turn right into the sun.  Planets, asteroids, etc. have no way of ever executing 90 degree turns naturally (as far as human understanding is at this time.) Why the information was pulled off the web--well there are a billion consipiracy theories about that, and I will skip it.  With proper technology, it is obvious to me the sun can be penetrated, and it well may be a portal to another dimension or whatever.  A black hole on "the other side" may appear as a sun here, and vice-versa.  If we exist in a fractal universe, there are three things: here, there, and the boundary between here and there.  This set of three keeps repeating infinitely.  Therefore the sun's energy producing layer may be a boundary to be passed through to get from "here" to "there."  Cool--huh?  Some very excellent minds are hard at work trying to further our understanding of the universe.
1007231
Current information is insufficient to give a correct answer. Once we explore more of the universe, maybe we could have a logical answer.\nst
319497
Have you ever noticed that the sun appears to come up on one side of the horizon, and then several hours later it seems to sink down on the other side of the horizon?\n\nIf you ever noticed this phenomenon, you were aware of the Earth spinning.
829511
I have seen those same NASA pictures with those tall things you spoke of blurred out. You have to wonder just what it is they are hiding. It may not necessarily be anything alien, but some secret government project going on up there. However, I do believe there could be alien/ET activity going on also. I have seen some unbelievable footage over the last several months. Some of it is quite scary and makes you wonder just what is really going on in the world. I am convinced that there is major government cover-up when it comes to this stuff.
151358
The satellite has a straight rotation around the earth but most do not have the same direction of rotation as the earth. but a tilted rotation so that it passes from the northern hemesphere to the southeren hemesphere. combined with the earths actual rotation makes it look like the satellite zig zag
136889
Its an illusion.  Its because the moon is closer to objects to which you can compare it.
152416
A great intergalactic convergance?  A great cosmological simultaneity?\n\nIve noticed that I sometimes track people for a while but then diverge later.  Must be common furrows in the twisted convolutions of our collective brains.  Like passing someone slowly on the freeway.
517874
Night and day occur at the same time on opposite sides of a planet.
280118
Not sure if this is the answer your looking for but this is the answer to the twin paradox.  \n\nThere is really no paradox.  The crucial factor overlooked is that in order for the two twins to get back together and discuss their beliefs, one of them must accelerate.  In so doing, the accelerating twin does not remain in the same inertial frame, but rather ends up in a frame heading back toward Earth.  An observer always in an inertial frame will observe relativistic effects in the usual way--moving objects contracted and moving clocks running slowly-- even if the object or clock he observes accelerates.  In order for the twins to ever get back together one much TURN.  By definition when you turn you accelerat even if your speed remains constant.  Its the acceleration that prevents a paradox.\n\nAs to why Einstein only got one nobel prize, short answer none of the established physisist liked him.  He was just a patent clerk who was messing up their nice neat notions of the universe.
339938
No, as satellites and probes have been sent around the solar system, even behind the sun. There is no evidence of another planet on the other side of the sun. \n\nIn a hypothetical world where there is a planet on the other side of the sun, the gravity pull from the planet will distort the orbits of the closer planets i.e Mars and Venus. This distortion can be extrapolated by astronomists to determine the size and speed of the planet. However the existing 9 planets have all orbits accounted for.
998540
apparently there are 4 galaxies which appear to be approaching us. this link may explain why....i don't quite get it...it's 3am...i'm tired.
21430
The theories presented so far have been pretty much debunked. The following link gives an elaborate explanation of this illusion. But even it fails to explain why we don't see this illusion every time the moon rises. It does not always appear larger at moonrise than when it is higher in the sky. Also, the moon may appear to be different sizes on different nights even in the same location. I'm still looking for a plausable explanation. \n\nhttp://facstaff.uww.edu/mccreadd/
790318
Let's consider the possibilities and address them one at a time.\n\n1) There is a large planet on the opposite side of the sun from Earth.\n\nThis has been proven not to be the case. Such a planet would cause the other planet's orbits to "wobble" in ways that have not been observed and besides, none of the probes which have been sent to other planets has observed any planets "hidden" behind the sun.\n\n2) There is a large planet in the outer reaches of the sun's gravitational field.\n\nWhile this is in fact a possibility, it is highly unlikely. Typically when "solar" systems are formed, the distribution of the planet sizes follows a roughly gaussian distribution, with the larger planets in a huddle (in our case, Jupiter, Saturn and to a lesser extent Uranus and Neptune). If there was a large planet in our solar system out beyond Pluto, it would be difficult to see, however there would be no other stars near enough to pull it away from the sun. It may, for example be hidden by the sun, but so far away that no "telescopes" on probes are powerful enough to see it (refer to option 1 above).\n\n3) There is a large planet made of anti-matter in the inner solar system (closer to the sun than Pluto) which we cannot see.\n\nThis is not possible. The visible planetary orbits would be perturbed, and we don't observe that.\n\n4) I have run out of options.\n\nThis is VERY possible!\n\nSo, there you have it. Make up your own mind.
892778
I think maybe the separation is smaller than the resolving power of my eyes rather than the angular separation of my eyes. So I can't resolve the two sources and just see one bright star. \n\nBest of luck - Mike
161169
We think so--up to a point.\n\nThere is something called the Hubble Shift--a change in the frequency of electromagnetic radiation that occurs due to the theorized expansion of the universe.  That boils down to things looking redder and redder the farther away they are.\n\nWhat's happening, as we currently understand it, is that we're seeing the light that was emitted however many years ago, that has taken that long to get here.  The trip may have caused some minor changes in the image, but the prevailing belief right now is that other than a little distortion (like from the Hubble effect, and gravitational lensing, and interacting with the dust and stuff between here and there) it's what it looked like then.