It was observed that the light from all objects in space was redshifted, meaning all objects are moving away from us. Light from objects further away was further redshifted. This would only happen in an expanding universe.
The big bang theory was created Georges Lemaître and further elaborated on by Stephen Hawking(the guy in the wheelchair who wrote "A Brief History Of Time") as a response to the question of how life came into being. Admitedley, both were led to the theory because the idea of an actual creator was unthinkable. The idea of a big bang has different actual theories incorporated into what is generaly called "the big bang theory". This is because scientists who truly(scientifically) break down the actual theory piece by piece find too many discrepencies and unscientific conclusions. One scientist will find that the theory states that matter was spinning at an enormous rate of speed and then exploded, and that is why all the bodies in space are spinning. The problem with this is very obvious to anyone who understands a very simple law of physics called the conservation of angular momentum(google: conservation of angular momentum) which simply states that if one mass is rotating in a certain direction, anything that is thrown off of it will also rotate in the same direction. The very obvious reality is that the planets, moons, solar systems, and even galaxies are NOT all rotating in the same direction. So here is where the theory gets changed. A new theory has to be developed to support this misnomer. This is how science is supposed to work. Unfortunately, the school textbooks still teach that our origin came from a tiny dot spinning at an incredible rate of speed. If you really delve into this theory, you will find more examples like this-all ignored and taught as fact for the simple reason that the idea of an actual creator or designer is "unthinkable". The big bang theory is not science. It is a religious statement of origins. Pure conjecture. The only thing holding it up is popular opinion being supported by more popular opinion. There is no proof in any form other than conjecture and yet we are told that the theory is in all reality A FACT. We are all free to believe whatever we want to believe about origins, but why is my government using my money to teach lies to my children?
Read the Wikipedia article about "Big Bang" for more details. The general idea is that all the matter and energy that is currently in the Universe was concentrated in a very small space, smaller than the size of an atomic nucleus. This matter was extremely dense,and extremely hot. From there, it started expanding. Eventually, matter cooled down sufficiently to form protons and neutrons, later some light atomic nuclei, etc.Read the Wikipedia article about "Big Bang" for more details. The general idea is that all the matter and energy that is currently in the Universe was concentrated in a very small space, smaller than the size of an atomic nucleus. This matter was extremely dense,and extremely hot. From there, it started expanding. Eventually, matter cooled down sufficiently to form protons and neutrons, later some light atomic nuclei, etc.Read the Wikipedia article about "Big Bang" for more details. The general idea is that all the matter and energy that is currently in the Universe was concentrated in a very small space, smaller than the size of an atomic nucleus. This matter was extremely dense,and extremely hot. From there, it started expanding. Eventually, matter cooled down sufficiently to form protons and neutrons, later some light atomic nuclei, etc.Read the Wikipedia article about "Big Bang" for more details. The general idea is that all the matter and energy that is currently in the Universe was concentrated in a very small space, smaller than the size of an atomic nucleus. This matter was extremely dense,and extremely hot. From there, it started expanding. Eventually, matter cooled down sufficiently to form protons and neutrons, later some light atomic nuclei, etc.
The Curvature of space indicated by the distributions of galaxies with distance. If galaxies seem to increase somewhat more slowly than the cube of distance, then this indicates positive curvature and finiteness of space. If space is finite , the Big Bang is bogus. The error of the Big Bang is the mis-interpretation of the redshift! At present, there has never been any measured curvature of space. It is mathematically flat -- and infinite -- to within 0.5% of perfect flatness. The Big Bang Hypothesis predicted the existence of isotropic microwave radiation whose wavelength distribution would be that of a black-body at temperature 3 degrees Kelvin (3K). When such radiation was found, PERFECTLY in accordance with the prediction of the Big Bang, it went from a hypothesis to a theory, just like plate tectonics. Red shift can be equally well explained either by the Big Bang or the Steady State hypotheses. No matter how badly the red-shift might be interpreted, the existence of the CMBR can ONLY be explained by the Big Bang.
No. Factories were crowded and unclean at that time.
The valley of the Little Bighorn River, in Montana.
The big bang theory is a theory on the creation of the Universe. The Philippines were created due to tectonic plate movements. The Big Bang theory has nothing to do with the country called the Philippines. See related question.
The Best of Big Bang
Edwin Hubble suggested the evidence of an expanding universe based on his observation of galaxies moving away from each other with increasing speed. This observation led to the development of the Big Bang theory, which proposes that the universe began as a single point and has been expanding ever since.
The Big Bang was first posited by Belgian physicist and priest, Msgr. Georges Lemaitre, who developed the idea at some stage between 1927 and 1933, 1927 when he first proposed the expanding universe model, and 1933 when he published his most detailed paper on the model and it's implications for universe formation. Most of his work was based of Einstein's work on relativity. And over the years, scientists have found increasing evidence which supports the big bang theory, as Ken Mitchell above states.
The discovery of the expanding universe led to the development of the Big Bang theory, which proposes that the universe originated from a singular event about 13.8 billion years ago. This theory is supported by various pieces of evidence, such as the cosmic microwave background radiation and the observed redshift of distant galaxies.
It verifies the Big Bang Theory. The discovery of the cosmic background didn't verify anything, least of all the Big Bang Theory, which was proposed decades later. The discovery of the cosmic microwave background was important because it was not predicted, it was not expected, it verified nothing, it could not be explained, and it therefore touched off new directions of thought and research in Physics, Cosmology, and Astronomy. Those in turn led to new discoveries, new answers, new theories, and new questions. One set of these, arising from the discovery of the CMB and other things, is the Big Bang Theory.
Current scientific understanding does not support the idea of the Big Bang repeating itself. The Big Bang theory suggests a one-time event that led to the expansion of the universe, rather than a cyclical process of expansion and contraction. While theories like the "Big Bounce" have been proposed, they are still speculative and not well-supported by evidence.
Penzias and Wilson were awarded a Noble Prize for discovering the cosmic background radiation, the left-over 'glow' of the universe from the Big Bang Theory. This is a very weak microwave radiation. In the early part of the last century, Edwin Hubble discovered the expansion of the universe. Discussions and speculation of many scientists on the topic of expansion, (Is it expanding? What is it expanding away from? What is it expanding into? How long has this expansion been going on? What caused the expansion? and more) led to the development of the Big Bang Theory. Steven Hawking (sp?) has been investigating this kind of question for 40 years or so.
The observation of microorganisms appearing spontaneously in broth that was thought to be sterile led to the theory of abiogenesis, the idea that life can arise from non-living matter under certain conditions. This was later disproved by Louis Pasteur's experiments, which showed that life only comes from preexisting life.
Actually, it wasn't the Doppler-effect that lead to the Big Bang theory, but the red-shift of remote galaxies. Although it was initially thought that this red-shift might be caused by a Doppler-effect, it is now understood that this red-shift is caused by the metric expansion of space itself.
George Lemaître proposed the idea of an expanding universe, suggesting that the universe is continuously growing and evolving. He also proposed the concept of the "primeval atom," which eventually led to the theory of the Big Bang.
One possible explanation for the formation of galaxies is the Big Bang theory, which suggests that the universe began as a hot, dense state and has been expanding and cooling ever since. Smaller structures formed first, which eventually merged to form larger structures like galaxies due to the force of gravity. Another theory suggests that fluctuations in the early universe's density led to the formation of galaxy clusters and filaments, which eventually gave rise to galaxies.