Big bang Definition and 909 Threads

With respect to time dilation... During the Big Bang, when space was expanding explosively (probably at light speed?) -- what was time doing? Was time at a standstill (or very dilated) during the explosive growth of the three spatial dimensions? Or was time expanding explosively since it's in...

Hey, everyone, this is my first thread on this site. I was thinking about the big bang. The big bang is noted as an explosion from a primeval atom. When this atom exploded, matter and energy scattered everywhere. From this explsion, space-time itself was created. I find it hard to...

Why does there have to be a big bang, why couldn't we (the universe) begun from another universe's black whole and pure energy flowed from a quasar, or white hole, from reading about quasars they are dumping millions of times the energy into the universe than galaxies that we view that is...

the big bang has been studied by a number of people and found not to contain a singularity (the density does not go infinite but has a finite limit) a good recent paper is http://arxiv.org/gr-qc/0407074 Genericity of the Big Bounce in isotropic loop quantum cosmology' Date and Hossain...

Hi, i had a query bout big bang which i guess even u guys would have thought of at some time or the other... big bang theory says that this primordial atom was a "small point" which had infinite density and contained all the matter n energy needed to fuel n run todays...

Newton's law of gravity Force = Gm1 m2 / r^2, can be used to calculate the force that the universe as a whole exerts on a particle at its surface, provided a particle on the surface of a sphere containing the entire mass of the universe has a radius greater than 10^ 25 metres (it is currently...

http://arxiv.org/abs/gr-qc/0406056 Casimir Energy Density at Planck Time: Cosmic Coincidence or Double Solution to the Cosmological Dark Energy Problem? C. S. Unnikrishnan (Tata Institute, Mumbai) 5 pages "The Casimir energy density calculated for a spherical shell of radius equal...

I carefully studied these links and came to the conclusion that the big bang is running out of steam. http://www.CosmologyStatement.org http://www.world-mysteries.com/sci_10_eusa.htm http://www.apologeticspress.org/rr/rr2003/r&r0305a.htm How many years do you give to the big bang...

If the big bang theory were to be taken to court under the same umbrella as a capital murder trial do you think it would be found guilty or innocent ? i.e. Guilty meaning the big bang did occur and inncoent meaning it did not occur.

In general relativity the equation t1 = t2 ( 1 - 2 GM/ r c ^ 2) ^1/2 is often mentioned. If the mass, M, is equal to the mass of the universe - 10 ^ 52 kg - then r cannot be less than 10 ^ 24 metres without invoking the idea that a time can be imaginary. But could an equally valid...

I have a question about the big bang We theorise that all the matter came from a singularity and that this expanded at the big bang shedding matter and energy in vast expanses. However, if this is the description of how matter came to be, then how did time ever come to be? The very first...

Day-dreaming the other day, I postulated a possible explanation for the controversial Big Bang Theory. Because an object attains infinite mass when it reaches light speed, is it possible that a pre-big bang species reached light speed (or near) and the affected object achieved infinite mass (or...

I'm just trying to understand the idea that our universe may be the result of a collision between two branes. According to this, what we see around us is a 3D brane floating in a higher dimensional universe? When our brane collided with another brane, it trigerred the heating and expansion that...

I came upon this forum due to an article I read in Popular Mechanics entitled "Where time began" and a google search. I believe that the more you dwelve into detail the less you lose sight of the obvious. It never ceases to amaze me when scientists do all sorts of calculating, analysing, and...

I don’t know about you but I don’t feel intellectually intimidated by a name of “authority” like physicist Stephen Hawkins, specially cos some statements don’t seem to be naïve or childish but really IMBECIL for a man knowing math as he does in his Brief Story of Time, the example of monkeys...

I found an intriguing article (well seemingly intriguing; I didn't get to finish reading it) that argues against the BB: http://www.angelfire.com/az/BIGBANGisWRONG/

The big bang occurred after a singularity evaporated, correct? All that there was in the universe was "in" the singularity. So there was no space for the singularity to have curved. :confused: Also, when space time is curved, in what direction is it curved? or is that relative to the...

If Christoph Schiller is right about the maximum force in nature being 10^ 45 Newtons (c^4 / 4G) then if quarks have a radius and are not point like this would mean (assuming a quark is spherical and made of partial electric charges on the surface of the sphere) that the minimum size a...

Edwin Hubble, 1929, formulated his hypothesis that the universe was expanding. George Gamov, in 1940’s, predicted the back-ground radiation, which was accidentally discovered by Penzias and Wilson, in 1965. However in 1969, Lyndon-Bell, laid the foundation that, at the heart of every...

What caused inflation in the big bang theory? I've read a few things that seem pure speculation designed to give a cause for something thought to necessarily have happened such as an antigravity force that faded at the end of the inflationary period. It seems too contrived to me.

Are there other ways to explain redshift than an expanding universe?

Hi, India rarely helps scientific advancement. Recently this country has made some wonderful advances in the field of missile technology and information technoloy. Their recognition has become strong now. Indians are now more popular in American due to outsourcing issue. Similarly some...

okay sure, the redshifts in light measured from distant stars would imply that the space between us and it is getting farther and farther apart. wouldn't this also be true if all matter was shrinking? take two inflated balloons spaced a meter apart. if the balloons represented stars and...

10) How can Physicists propose a Theory of Everything without considering more closely the state of nothing from which energy was created? A second impasse faced by cosmological theory - insofar as it attempts to explain the origin of matter – is when describing the circumstances under which...

3) Why did it become unfashionable to mention the centre of the universe after the 16th century, when Copernicus placed the sun near there? Every body has a centre of gravity, whether it is a galaxy, a person, or a pebble. The universe had one when it first appeared: What happened to it? What...

Here follows the first part of the questions. Their appearance here is with thanks to Marcus and Nereids' encouragement:- Questions arise on what has been written for we ordinary people about how matter began – and on what has received little to no mention at all. To a cosmologist, these...

You know guys, the planets is composed mainly of two types of rock material, Fe-material( siderolites) and the stony element (aerolites), these are heavy elements and available in the apace, which formed planets and stars within 1-2 billion years just because there were two Big Bangs, one...

Hi all, i have a question about the big bang, it might be dumb i don't know much about science. Anyway here is my train of thought. 1. Matter cannot be created nor destroyed and therefore everything that exists today has existed for an infinate amount of time in the past and will for an...

The snapshot of the universe, called the Ultra Deep Field, captured light that had streaked through space for more than 13 billion years, starting its journey when the universe was only 5 percent of its 13.7-billion-year age. The view has about 10,000 galaxies, some mixed in chaos that one...

Can anybody suggest an avenue for resolving a predicament I face over big bang theory? I'm a geophysicist and work in remote areas, engaged in seismic data acquisition projects. I am fascinated by what I read on theoretical physics, and the fascination is focused on the (so far unsuccessful)...

This is question from a philosophical thread but it is scientific in nature. Is omniscience possible in a universe described by our current laws of physics. I would say it is not. Information could not be gathered from the entire universe instanteously which would be necessary to know...

This definitely is a philosophical question, since the time/space outside of this theory cannot be theorized about scientifically. Since (assuming it happened) things expanded exponentially at insane temperatures in the first fraction of a second, one must assume that something happened on a...

To the mentor-censor Why do you forbid research reports about empirical discoveries that by scientific derivations give other results than the conspired consensus? Why do you not let your members discuss the science without censoring? What I would like to tell more about is the unified...

This is my first post and I’ve got some questions in regards to our universe. From what I’ve been reading it is known that the universe began in a hot big bang, or evolved from a similar condition. Either way the information we have points to some kind of initial condition, and also a beginning...

I'm new to this forum and need to throw out a question: I'd like to know what the difference in the time that I might record if I were standing at the beginning of the Big Bang looking forward and if I were here now looking back. In other words how old would the universe look if I were...

Forgive me if this has been asked/answered before but this is something I've wondered about since I was six years old. Please keep in mind that I know nothing about Physics (I didn't even take physics in high school) so I apologize if this sounds stupid. From what I understand...

This question might not be sensible to ask having in mind "The brief history of time" by S. H. since there he claims that what ever was happening before the Big Bang it sure won't affect what is happening afterwards. Yet I wonder what exploded in BB: -was it a gigant planet, star or similar or...

I'm not sure if this has been theorized before by anyone but this is what I came up with as a theory as to how universes are formed and how "big bangs" occurr. I'm only in high school and haven't taken physics but I don't see how this can be ruled out all together. Basically this is about black...

I know that looking back in space is looking back in time. I also know that seeing the Big Bang should be beyond us in space time. I believe that we are on the edge of the bubble, that is space time, If we could see far enough back, or far enough out, we could see the Big Bang. Why or Why not...

How does a Big Bang occur at every point in space. It is easy to comprehend something exploding at a point and sending everything outwards, but if something explodes (if we are even talking about the Universe exploding) at every point on and in itself, wouldn't it blow itself up or something...

Any recommendations on easy to read books about The Big Bang. Thanks Nautica

Really should call it "Big Bounce" instead of Big Bang. Yesterday another paper was posted at the Los Alamos arxiv about getting rid of the Big Bang glitch by quantizing General Relativity. Martin Bojowald started this line of research but more people are getting into it, the new paper is...

I originally posted this in Theory Developement. It got a number of looks but no responses. I have posted it here where it probably belongs to see if it gets any reponses. During the last few years I have read a number of books on The Big Bang including recently one By John Gibbin; "In...

During the last few years I have read a number of books on The Big Bang including recently one By John Gibbin; "In the Beginning." Most if not all of the books mentioned the precision with which the initial values of some important parameters had to be for the universe to have formed as it has...

I've heard rumblings that go against the Big Bang theory but I never read a full blown scientific rebuttal until this: http://www.Newtonphysics.on.ca/BIGBANG/Bigbang.html The article basically shows how all the evidence commonly cited in support of the Big Bang can be explained without...

A quick epistemological issue I'd like to discuss... Can anyone out there give me a good, non-technical explanation for why Cosmologists generally take for granted that evidence of spatial expansion is evidence of some global event (i.e. "the Big Bang"), rather than some local, spatially...

Theoretically, the Universe began at a singualrity at the big bang. Inside of a black hole, there is a singularity. And a black hole eventually evaporates leaving the singularity in an unobservable region of space-time. Couldn't this very well be how our Universe began, and therefore mean that...

to start, i agree with the BB theory as a "result" of the begining, the BB theory does not explain where the energy came from to cause the BB. what is requierd is a theory that predicts where the BB energy originated. the only part of the BB theory i do not agree with is that it created...

Ok apparently I just don't get it, so perhaps someone can explain this to me. Why do we assume that nothing existed before the big bang? Why do we assume that time began with the big bang? DO we have evidence or logic to support this theory? Forgive me if these things are elemetary, but if...

The notion of the big bang is familiar to everybody at PF. The idea has dominated how people think about cosmic history maybe since around 1965 with the detection of the CMB. Widely shared myths or images about beginnings are important parts of culture. If anyone has a link to some online...