Penzias and Wilson just discovered the CMB. The "founder" of the big bang theory is George Lemaitre in 1931, he began to question the universe. He was exploring the fact that the universe is always expanding it must have been smaller in the past and therefore it must have a starting point. When Penzias and Wilson discovered CMB by accident there were already some astrophysicists at Princeton who were about to start looking for microwave radiation and they got together and realized the radiation was evidence for the big bang.
Honestly, there isn't much to know quite yet on dark matter and energy. It is still very mysterious and scientists are working to figure more out, but we do know that almost 70% of our universe is made up from dark energy. Since it takes up so much of our universe we know that it had to have had a hand in the big bang. There are several theories on what it is and exactly where it came from, but we do know it is what is driving the universe to expand. Gravity obviously wouldn't be doing that and there is no other explanation than dark energy being the driving force.
Incorporating the concept of dark energy into the Big Bang theory helps account for the three quarters of the universe that was "missing" from earlier models. It also helps explain why our universe's expansion is accelerating instead of slowing down. Although there isn't a solid explanation of what dark energy is, the concept of dark energy has helped explain a number of phenomena that astronomers observe in the universe today.
How did you come up with the conclusion that the existence of different kinds of galaxies meant evolution in the universe? Despite the knowledge that the universe is expanding due to CMB and the Doppler effect, couldn't these kinds of universe have just been created that way? Why is that evidence?
For a long time scientists thought that the universe had existed basically unchanged and then Lemaitre suggested that the universe began as a huge atom that exploded and sent out different, smaller atoms. Then Hubble discovered that the universe was expanding and if that's the case there must have been a starting point. No one knows how the universe was created because the big bang theory just goes over the expansion of the universe.
How did you come up with the conclusion that the existence of different kinds of galaxies meant evolution in the universe? Despite the knowledge that the universe is expanding due to CMB and the Doppler effect, couldn't these kinds of universe have just been created that way? Why is that evidence?
When we look at distant galaxies, we are looking "into the past". How can we use this information gathered from these galaxies to predict what will happen to our universe in the future?
By looking at the light from other galaxies we can get an idea on what ours might look like. Even if the galaxy we are looking at is younger than ours, we can compare what ours is like to theirs and make hypotheses on what ours will do in the future with the information gathered from the two. So then add in dozens, then hundreds, then thousands of galaxies to compare with and we can get a pretty good idea on what will happen in our future.
Some big evidence other than the cosmic microwave background radiation is redshift (the constant expansion of our universe being driven by dark energy),the light from other galaxies (looks different than ours and is still expanding), and of course the abundance of helium and other elements that shouldn't really be around if not for something huge happening.
Are Penzias and Wilson the founders of Big Bang Theory, or did someone use their data about CMB to form the theory?
ReplyDeletePenzias and Wilson just discovered the CMB. The "founder" of the big bang theory is George Lemaitre in 1931, he began to question the universe. He was exploring the fact that the universe is always expanding it must have been smaller in the past and therefore it must have a starting point.
DeleteWhen Penzias and Wilson discovered CMB by accident there were already some astrophysicists at Princeton who were about to start looking for microwave radiation and they got together and realized the radiation was evidence for the big bang.
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ReplyDeleteDid the birth of the universe violate the Conservation of Energy?
ReplyDeleteThe big bang doesn't address the creation of the universe, only the evolution of the universe.
DeleteDo the Big bang theory explains how the universe was created, or did it help shape our evolution?
ReplyDeleteThe big bang doesn't explain how the universe was created, it only tells us how the universe expanded
DeleteAccording to the Big Bang theory, what happened within the first 3 minutes?
ReplyDeleteIn the first three minutes of the big bang the universe cooled and protons and neutrons began to react to each other to form deuterium
DeleteWho was the first person to use the term "Big Bang" within this context?
ReplyDeleteFred Hoyle was the person who coined the phrase the big bang.
DeleteHow might the existence of dark energy impact the our knowledge of the Big Bang Theory?
ReplyDeleteHonestly, there isn't much to know quite yet on dark matter and energy. It is still very mysterious and scientists are working to figure more out, but we do know that almost 70% of our universe is made up from dark energy. Since it takes up so much of our universe we know that it had to have had a hand in the big bang. There are several theories on what it is and exactly where it came from, but we do know it is what is driving the universe to expand. Gravity obviously wouldn't be doing that and there is no other explanation than dark energy being the driving force.
DeleteHow might the existence of dark energy impact the our knowledge of the Big Bang Theory?
ReplyDeleteIncorporating the concept of dark energy into the Big Bang theory helps account for the three quarters of the universe that was "missing" from earlier models. It also helps explain why our universe's expansion is accelerating instead of slowing down. Although there isn't a solid explanation of what dark energy is, the concept of dark energy has helped explain a number of phenomena that astronomers observe in the universe today.
DeleteHow did you come up with the conclusion that the existence of different kinds of galaxies meant evolution in the universe? Despite the knowledge that the universe is expanding due to CMB and the Doppler effect, couldn't these kinds of universe have just been created that way? Why is that evidence?
ReplyDeleteFor a long time scientists thought that the universe had existed basically unchanged and then Lemaitre suggested that the universe began as a huge atom that exploded and sent out different, smaller atoms. Then Hubble discovered that the universe was expanding and if that's the case there must have been a starting point.
DeleteNo one knows how the universe was created because the big bang theory just goes over the expansion of the universe.
How did you come up with the conclusion that the existence of different kinds of galaxies meant evolution in the universe? Despite the knowledge that the universe is expanding due to CMB and the Doppler effect, couldn't these kinds of universe have just been created that way? Why is that evidence?
ReplyDeleteWhen we look at distant galaxies, we are looking "into the past". How can we use this information gathered from these galaxies to predict what will happen to our universe in the future?
ReplyDeleteBy looking at the light from other galaxies we can get an idea on what ours might look like. Even if the galaxy we are looking at is younger than ours, we can compare what ours is like to theirs and make hypotheses on what ours will do in the future with the information gathered from the two. So then add in dozens, then hundreds, then thousands of galaxies to compare with and we can get a pretty good idea on what will happen in our future.
DeleteWhat are some evidence to prove the big bang theory other than the cosmic microwave background?
ReplyDeleteSome big evidence other than the cosmic microwave background radiation is redshift (the constant expansion of our universe being driven by dark energy),the light from other galaxies (looks different than ours and is still expanding), and of course the abundance of helium and other elements that shouldn't really be around if not for something huge happening.
Delete