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In 1946, George Gamow noted that, if the Big Bang had happened as Georges LeMaitre had hypothesized, our planet would be receiving isotropic microwave radiation with a spectrum like that of black body radiation from a 5 K source. Later refinements have shown that it would resemlbe BBR from a 2.7 K source.
What we see is exactly as predicted. No other cosmologizl hypothesis can explain this CMBR except to say, "It's just there and I have no explanation for it."
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∙ 11y ago
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What has static got to do with the big bang?
If you have an old TV (the kind that you must turn channels with a knob) you may notice that, in between the channels, there was a fair amount of static in between them. Some of this was cosmic microwave background radiation- CMB. The same amount of CMB was present no matter where we looked, thus adding on to the proof of the Big Bang Theory.
Is radiation generated by the big bang cooled and now is detectable as microwaves?
Yes, that is correct. The radiation generated by the Big Bang is called the cosmic microwave background (CMB). As the universe expanded and cooled over billions of years, the high-energy radiation transformed into lower-energy microwaves. Today, the CMB is detected as a faint glow of microwaves that permeates all of space and provides crucial evidence for the Big Bang theory.
What evidence exists to support the big band model of the origin of the universe?
I will assume you mean "Big Bang". Theoretically, a static Universe won't be able to remain stable for long. Also, the increase in entropy - Second Law of Thermodynamics - means the Universe can't last forever. The expansion of the Universe is evidenced by the redshift of distant galaxies, which is usually attributed to the Doppler effect. The idea of a Big Bang is also supported by: * The cosmic microwave background (CMB) radiation, which agrees with the predictions of the Big Bang model. * The percentages of elements and isotopes, which also agrees quite well with what is expected from the Big Bang model.
How cosmic microwave background radiation shows us the universe is changing?
Cosmic microwave background (CMB) radiation is a remnant of the early universe, a faint glow left over from the Big Bang. By studying the CMB, scientists can determine various properties of the universe, such as its age, composition, and rate of expansion. Over time, the CMB has cooled and stretched as the universe expanded, and analyzing its temperature fluctuations provides insights into the evolving structure and dynamics of the universe. Therefore, the CMB radiation serves as a powerful tool to understand how the universe has changed and evolved over billions of years.
Does cosmic background radiation suppor the big bang theory?
Yes - The interpretations of the Cosmic Microwave backgroun Radiation (CMBR) supports much of the current work in cosmology, in context with the Big Bang, to include reconciling observations with the basic theory, confirming our understanding of the physics for the early Universe. The 9 year mapping of the CMBR barrier via the Wilkinson Microwave Anisotropy Probe (WMAP) is suggested of what has been left over from the Big Bang and the confirmation of the predicted Planck epoch. Interpretations of this discovery provided substantial confirmation of the general CMB predictions: the radiation was found to be consistent with an almost perfect black body spectrum in all directions; this spectrum has been redshifted by the expansion of the universe, and today corresponds to approximately 2.725 K.
What is cmb?
CMB is cosmic microwave background radiation. It is the radiation that is the basis for the Big Bang theory.
What has static got to do with the big bang?
If you have an old TV (the kind that you must turn channels with a knob) you may notice that, in between the channels, there was a fair amount of static in between them. Some of this was cosmic microwave background radiation- CMB. The same amount of CMB was present no matter where we looked, thus adding on to the proof of the Big Bang Theory.
Is radiation generated by the big bang cooled and now is detectable as microwaves?
Yes, that is correct. The radiation generated by the Big Bang is called the cosmic microwave background (CMB). As the universe expanded and cooled over billions of years, the high-energy radiation transformed into lower-energy microwaves. Today, the CMB is detected as a faint glow of microwaves that permeates all of space and provides crucial evidence for the Big Bang theory.
The big bang produced an imprint of leftover heat called?
"Cosmic microwave background radiation", or CMB
Why the cosmic background radiation was an important discovery?
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.
How are microwaves from space detected and what do they tell us about the beginning of the universe?
Microwaves from space can be detected from the use of radio telescopes. Microwaves have been used to test the big bang theory, and this Cosmic Microwave Background (CMB) radiation is a form of microwave that "fills" the universe, that is almost exactly the same in all directions and is not associated with any star or object. The CMB radiation is recognized to be radiation left over from the big bang, or during the early stages of development of the universe.
Can the CMBR be redshifted starlight?
The odds are very much against it. The CMB matches expectations following from the Big Bang too well for it to be coincidental.
How we came to have knowledge of the Big Bang?
Evidence, scientific models, simulations, observations, etc. In a way we didn't discover the Big Bang, we made it. Using known science and the many laws that govern various fields, as well as observations like that the universe is expanding, the visual evidence of the cosmic background radiation, simply the ability to look into space and see back in time, among other things, we can put it all together into theories. The best theory of which is the Big Bang theory. In the 50s, there were two theories answering the question. The nascent Big Bang theory and the popular steady-state theory. Then in 1965 the cosmic background radiation was discovered, which the Big Bang theory predicted, and the steady-state theory was essentially dead because it had no solution to the existence of the CMB. Under the known laws of physics, simply the best answer to how this universe began is the Big Bang. In this day there are scientific fields devoted just to various aspects of the Big Bang itself; for example, Big Bang neucleosynthesis (The creation of atoms heavier than hydrogen-1). That's not to say the Big Bang theory is correct, it is a theory with its own problems after all, it's just the most likely one at this time.
What is unique about cmb that makes scientist believe it supports the big bang theory?
The Cosmic Microwave Background is not "unique" in having a spectrum that matches perfectly that of a blackbody radiator, but that is significant. It is quite unique for astronomical radiation by being isotropic to within one part in 100,000. These two facts are easy to explain if the Big Bang happened as we conclude it did, and impossible to explain with any other hypothesis.
What evidence exists to support the big band model of the origin of the universe?
I will assume you mean "Big Bang". Theoretically, a static Universe won't be able to remain stable for long. Also, the increase in entropy - Second Law of Thermodynamics - means the Universe can't last forever. The expansion of the Universe is evidenced by the redshift of distant galaxies, which is usually attributed to the Doppler effect. The idea of a Big Bang is also supported by: * The cosmic microwave background (CMB) radiation, which agrees with the predictions of the Big Bang model. * The percentages of elements and isotopes, which also agrees quite well with what is expected from the Big Bang model.
Why is the big bang theory possible?
This theory (and PLEASE don't mis-use the word "theory" in a way that people, who are trying to advance a social agenda instead of truth, mis-use the word) explains things that are impossible to explain in any other way -- starting with the cosmic microwave background. All other hypotheses are relagated to saying, "We don't WHY there's a CMB, it's just there, and we can provide no answer for its origin." The Big Bang does a LOT better than that. So it's not only possible, it's the only hypothesis that matches the experimental evidence. And that's why it's a theory (like gravity) and not just a hypothesis.
Is the big bang theory possible?
This theory (and PLEASE don't mis-use the word "theory" in a way that people, who are trying to advance a social agenda instead of truth, mis-use the word) explains things that are impossible to explain in any other way -- starting with the cosmic microwave background. All other hypotheses are relagated to saying, "We don't WHY there's a CMB, it's just there, and we can provide no answer for its origin." The Big Bang does a LOT better than that. So it's not only possible, it's the only hypothesis that matches the experimental evidence. And that's why it's a theory (like gravity) and not just a hypothesis.
