When scientists say the universe is flat, it doesnt necessarily mean it resembles an infinitely-expanding sheet of paper. SPACE. Life literally finds a way! Answer (1 of 7): The nature of something is the knowledge of how the thing in question acts, reacts, enfolds, unfolds. No. Imagine being submersed mid ocean. You can only see 100m in all directions (your observable universe). You cannot deduce what the shape of the This is the most precise cosmological data and Several recent studies indicate the universe is dense as measured by proton density, which approximates to about six hydrogen-containing protons every one billion kilometers. It means that the simplest large-scale topology that accounts for the observed far-field CMB observations has no intrinsic curvature . though, loc In a hypertorus model of the Universe, motion in a straight line will return you to your original [+] location, even in an uncurved (flat) spacetime. After The Largest Extinction Event on Earth, These Animals Were The First to Recover. 2 hours ago. the right mass density that it will neither expand forever like a cylinder nor collapse back on itself like a sphere one of the main pointers to the era of the very rapid expansion of the universe, This is a very subconscious cry for help.If someone in real life is controlling you to the point where you feel helpless, then dreaming about them dying is a passive way out for you.. Dreaming that they are dying doesnt mean you want them dead, it is just that you need to escape from their controlling ways. In other words, the universe is flat. It is an Italian-Americanised mispronunciation of the phrase, which is considered as Vaa fare in culo, and it is literally go do it in the ass that are often shortened to vaffanculo, or the word are just a fongool. Flat universes. It means that the space time of the universe would not have any overall curvature. (Due to General Relativity, it does definitely have local region When cosmologists say that the universe is flat they are referring to spacethe nowverse and its parallel siblings of time past. It means that if you made a slice through space at a fixed moment in time and tried to draw a triangle on a really huge scale (millions of light-years across), it wouldnt be a proper, two-dimensional triangle. In a 2D analogy, this corresponds to the geometry of a table; hence the name "flat". So, we must first delve into what scientist mean by flat and how they came to such a conclusion. Zero curvature (flat); a drawn triangle's angles add up to 180 and the Pythagorean theorem holds; such 3-dimensional space is locally The universe is flat, according to scientists. Since we are pretty much certain the Universe is flat, the chances of it being closed instead are correspondingly small. It sure feels like 3-dimensions. The curvature is a quantity describing how the geometry of a space differs locally from the one of the flat space.The curvature of any locally isotropic space (and hence of a locally isotropic universe) falls into one of the three following cases: . I am not sure why the character "" (small) is used here. What does this even mean, and how do we know its true?Support us at: http:/ Cosmologists tell us that the Universe is flat. But our universe seems to fit in neither camp. In cosmology, "flat universe" means that space is flat, not spacetime. Space is the three-dimensional hypersurface that results when cosmic time is held fixed. The spacetime metric induces a spatial metric on this three-dimensional hypersurface. It's behavior, the way it behaves. A flat universe is a universe where your good old high-school math works as expected: the angles of a triangle sum up to radians (180 degrees), the circumference of a circle is times its diameter, parallel lines never meet, etc. ESO and deviantART user InTheStarlightGarden. Is The Universe Flat? I found this quote in a science internet site, If we look beyond our edge of perception its possible the universe is a sphere. I tried searching Wikipedia for E and maths but found the e mathematical constant. The universe (Latin: universus) is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy.The Big Bang theory is the prevailing cosmological description of the development of the universe. The reason is the same reason that you cant peel a sphere and lay it The origins of that debate owe greatly to one man - Bernhard Riemann. And the displayed time is a really small number. We Live in a Flat Universe. January 3, 2017 Mike. Cosmologists generally agree that our universe is flat. But how exactly can that be for our 3-dimensional selves and everything else for that matter? Well, first its useful to note that the flatness is a property of geometry, and not topology. We say that the universe is flat, and this means that parallel lines will always remain parallel. 90-degree turns behave as true 90-degree turns, and everything makes sense. But what are the implications for the entire universe? What does this tell us? Unfortunately, the biggest thing is what it doesn't tell us. ), but the shape of the Universe is an important question in modern cosmology. If this were the case, irrespective of the original geometry of the Universe, it would appear flat to us. A finite universe could have an edge or boundary. If the universe is homogeneous and isotropic then the curvature of the universe must be constant and the same throughout space. It is hard to imagi The idea that the Universe is flat means that the Pythagorean theorem holds up for spatial coordinates. But to say our universe is flat and leave it there would be irresponsible its not quite that simple. The authors reanalyzed a major cosmological data set and concluded that the data favors a closed universe with 99% certainty On large scales, the universe is flat, which means that if you pick 3 distant points, and draw a triangle connecting them (say by sending light beams from one vertex to another), when you add up the angles, you'll get 180 degrees. Were going to go over how you can do this easily. Let's simplify this by looking at the two-dimensional case. Take a piece of paper, and cut it into uniform, perfectly square pieces. Now pick a sur A Minkowski spacetime is flat. Is there any difference between "" and ""? a Finally, a third way to go about it, is to notice that for all the values of k, if we look at r 0 , we get locally flat universe by taylor expanding 1 1 k r 2 1 + 0 ( r). In a curved space, you can get more or less than 180 degrees, depending on how space is warped. Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site Some scientists say theres a chance that the universe is a sphere.. Dr Dwight Turner, UKCP Psychotherapist (opens in new tab) says, "When we are more busy, then we either dream less or our dreams take on more of our daily life. A provocative paper published today in the journal Nature Astronomy argues that the universe may curve around and close in on itself like a sphere, rather than lying flat like a sheet of paper as the standard theory of cosmology predicts. My guess is E stand for Exponential and -5 is the power it is raised to. Most cosmological evidence points to the universe's density as being just right the equivalent of around six protons per 1.3 cubic yards and that it expands in every direction without curving positively or negatively. "The experience of dreaming differs depending upon the stage of life we are going through." According to this theory, the Universe underwent exponential expansion about 10 -30 seconds after the Big Bang. One of the consequences of Einsteins theory of general relativity is that space may be curved or flat depending upon a number we will call omega. A flat universe is a key piece of the standard cosmological model, also known as the Lambda cold dark matter (CDM) model. It From this perspective, the fact that $\Omega_k$ is very small could indicate $2$ things: either the universe is infinite (and flat), or the universe Our universe is obviously not flat as it contains matter. What this does is take smaller commits and combine them into larger ones, which could be useful if youre wrapping up the days work or if you just want to package your changes differently. The Universe could also be closed and positively curved: like a hypersphere. Even if this answer suggests that both constructs are equivalent, there's a subtle difference between both for(;;) and while(1) (which both create infinite loops) in the C language (and possibly compiler-dependent)..

Fongool Now, you have to understand the word fongool, which is famous. By definition, we call flat universes the universes with this spatial component, this spatial behaviour. The surface of the torus is also spatially flat, but it is finite. So you have two possibilities for a flat Universe: one infinite, like a plane, and one finite, like a torus, which is also flat. ESA: Flat' seems to have a different meaning to non-scientists. By 'flat' we understand to be like a table, which has width. (A finite but unbounded universe is typically referred to as a closed universe.) In fact, every line of longitude intersects at two points: the north and south poles. So don't get confused, that for small k we have flat universe. For example, we dream of our boss at work, or the person we saw on the train during our daily commute, or we $\begingroup$ Okay right, "local curvature" doesn't make sense here since homogeneous and isotropic implies constant curvature. ( is the Greek letter for lambda , denoting dark energy.) Shapes universe could have take after big bang, depended on value of its relative density ( %3E1 , %3C1 or =1). The value of relative density turne Still to come: how do we know that the curvature of space is a fact of life; what would the world look like if space were very curved; what is A geometrically flat universe will just keep on expanding forever, while a "closed" one will eventually pull back in on itself, leading to the reverse of What is the shape of the Universe? In the early stage of the universe, such collisions were very common which brought order into the motions of bodies we see today. Then, even if the universe is not described by the k=0 model, today it is so large (i.e. %3E Q: What does it mean that "The Universe Is Flat?" A: It means that if you make a huge triangle, it behaves like the triangles you were taught i According to these observations, the universe is 41 times more likely to be closed than flat. The universe is flat as a pancake, and we don't understand why. Despite being 3 inches wide, it expands from no curved lines to upwards regardless of strength. If it's flat then you have to start asking "what's outside of it, or why does 'outside of it' not make sense?" By flat, I believe, scientists usually are talking about geometries (open, closed, flat) They aren't talking about it being 2d but more like which My answer to this question would be, yes and no. It depends on whom you ask and what you mean by "flat". A General relativist's definition of a fla If you mean the integral of the stress-energy tensor, yes, the exact numerical value might depend on your choice of coordinates (although in the simplest closed universe, the FRW one, the natural symmetry of the spacetime picks out a particular foliation by spacelike hypersurfaces that leads to the standard FRW coordinates), but it will be positive no matter If you've studied non-Euclidean geometry, you'll know that a triangle can have more or less than 180, depending on the surface its drawn on. This doesnt mean that the universe is a big ball, these are just ways for us to understand the complexity of 4-dimensional geometry using something we are familiar with. What does that time mean? It means it is a universe that has no matter (neither mass not energy) in it. Featured Image Credit: Memegenerator.net. Often people are confused by the term conformally flat and mistake it for flat (e.g. The result of their observations is that the universe appears to be mostly flat--to within 0.4% margin. What does "flat" mean and does that refute Einsteins contention that the universe is "curved"? There's also a Goldilocks scenario for the universe, which scientists say is the most plausible. We can all agree the Earth isn't flat (I hope! The BTS Universe or Bangtan Universe (often shortened to BU; ), initially known as The Most Beautiful Moment in Life Series, Hwa Yang Yeon Hwa Series or HYYH Series until the official name and logo were first used in 2017, is an original story that is centered on a series of music videos and short films, independently produced by HYBE and Big Hit The short answer to this question is that the Universe cannot be both flat and closed. #2 is totally correct - when we say the universe is flat it is not in the same sense that a piece of paper is flat, but rather means that the geometry of the universe is such that parallel lines will never cross, the angles in a triangle will always add up to 180 degress, and the corners of When ancient people looked to the horizon they believed the Earth was flat. If the universe is indeed flat then that means we have a different set of questions that need answers than if they universe is curved.