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Author | Topic: Cosmology 101 | |||||||||||||||||||||||
Force Inactive Member |
Greetings
I am interested in discussing the BBT and the related phenomena like inflation, relativity, blue-shift, red-shift, black holes, stars, and so on. I am also interested in discussing the other theories related to the "beginning of the universe" other than what is in the mythological realm such as the Christian Bible. The reason I would like to discuss the BBT and all the related Scientific phenomena, instead of just read about it elsewhere, is because I am a kinesthetic learner and I learn typically via interaction with subjects.
www.AllAboutScience.org writes:
Big Bang Theory - The PremiseThe Big Bang theory is an effort to explain what happened at the very beginning of our universe. Discoveries in astronomy and physics have shown beyond a reasonable doubt that our universe did in fact have a beginning. Prior to that moment there was nothing; during and after that moment there was something: our universe. The big bang theory is an effort to explain what happened during and after that moment. According to the standard theory, our universe sprang into existence as "singularity" around 13.7 billion years ago. What is a "singularity" and where does it come from? Well, to be honest, we don't know for sure. Singularities are zones which defy our current understanding of physics. They are thought to exist at the core of "black holes." Black holes are areas of intense gravitational pressure. The pressure is thought to be so intense that finite matter is actually squished into infinite density (a mathematical concept which truly boggles the mind). These zones of infinite density are called "singularities." Our universe is thought to have begun as an infinitesimally small, infinitely hot, infinitely dense, something - a singularity. Where did it come from? We don't know. Why did it appear? We don't know. After its initial appearance, it apparently inflated (the "Big Bang"), expanded and cooled, going from very, very small and very, very hot, to the size and temperature of our current universe. It continues to expand and cool to this day and we are inside of it: incredible creatures living on a unique planet, circling a beautiful star clustered together with several hundred billion other stars in a galaxy soaring through the cosmos, all of which is inside of an expanding universe that began as an infinitesimal singularity which appeared out of nowhere for reasons unknown. This is the Big Bang theory. Big Bang Theory Error 404 (Not Found)!!1 Please do not participate in this thread if you're going to try and attempt to disprove the BBT or any of the related phenomena. Edited by Force, : video Edited by Force, : edit -change thread title from: Bing Bang Theory 101 to Cosmology 101 so that a broader conversation on outer space can occur Thanks |
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Force Inactive Member |
Greetings,
it is my understanding that our universe started as an infinitely small-dense-hot singularity that expanded to what we have today. What evidence does cosmology have that theorizes the start of our universe from such a strange phenomena? P.S. I realize that I could search for links on the internet but I have found a lot better links through discussion on the EVC Forum. Edited by Force, : edit Edited by Force, : edit Thanks
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Force Inactive Member |
Taz,
How did cosmologist determine that the universe is expanding? How do cosmologist know that the universe is expanding from a singularity? How is cosmic background radiation detected? Edited by Force, : grammar Edited by Force, : grammar Edited by Force, : edit Edited by Force, : edit Thanks To believe in "Force" is to believe in Love, Wisdom, Intelligence, Force, Agility, and Charm.
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Force Inactive Member |
Taz,
Taz writes: Almost universal red shifts. Basically, everywhere they looked, everything was red shifted. The further away the objects, the more red shifted they were. So in all directions, external to our planet, all stars are red shifted?
Taz writes: If everything is expanding at an accelerated speed right now in every direction, it doesn't take a genius to work it backward to a lot smaller and compact universe. I suppose anything is possible but how do cosmologist know that the universe is expanding outward from a point instead of just simply moving in a single direction like a current?
Taz writes: The BBT predicted a very hot, very dense universe near the beginning. If so, an afterglow of this early condition should be found everywhere we look. I can't remember off the top of my head the guys that first discovered it. What happened was they kept picking up a background noise in their instruments. At first, they thought the instruments were faulty, but they couldn't find what was wrong. Then they decided to point the radio telescope to a different direction and they got the same background noise. In fact, everywhere they looked they saw the same thing. BINGO! They found the "afterglow" predicted by the BBT. So the cosmic background radiation is a glow, noise, or both? Thanks To believe in "Force" is to believe in Love, Wisdom, Intelligence, Force, Agility, and Charm.
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Force Inactive Member |
Taz,
Taz writes: No, not all stars. Remember that we are talking in cosmic scales here. Stars are insignificant. We are talking about galaxies, globular clusters, etc. Ok
Taz writes: Because everywhere we look things are accelerating away from us. Ok, so cosmologist can determine that due to the red-shift.
Taz writes: Hahahahahaha It's an electromagnetic "noise". It's not sound wave if that's what you mean. It's within the electromagnetic spectrum, specifically microwave. I referred to it as "noise" because in a sense it is noise. Imagine yourself in a party with a lot of people. Every direction you could hear background noises, and clearly these background noises aren't coming from any single source you could identify. That's what the cosmic background radiation is. It's clearly not coming from any single source that we could see. Yet, everywhere we look it's there at 3K. LOL. I have been reading about this stuff but it is a little difficult to grasp. So, effectively, cosmic microwave radiation is a "noise" in a frequency range that can't be heard via the ear but can be seen via a electromagnetic detecting device. LOL... Edited by Force, : edit Thanks
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Force Inactive Member |
Taz,
Taz writes: Just to get something clear, no part of the electromagnetic spectrum can be "heard" by the ear. I realized that(freq range way to high to hear with ear) I just like to be formal and discuss things. ![]() I would also like to discuss the phenomena of a infinite or finite universe. I understand that whether or not the universe is infinite or finite depends on the omega value, right? Which means we have no idea as of right now, right? However, reason would dictate a finite universe since the universe had a begining, right? Edited by Force, : edit Edited by Force, : edit Edited by Force, : edit Edited by Force, : edit Edited by Force, : grammar Thanks
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Force Inactive Member |
Son Goku,
What kind of device was used to detect it? Edited by Force, : edit Edited by Force, : edit Edited by Force, : edit Edited by Force, : edit Thanks
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Force Inactive Member |
cavediver,
I have seen pictures like those before. Are those pictures of our universe? Edited by Force, : edit Thanks
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Force Inactive Member |
agobot,
agobot writes:
The strentgh of the fundamental forces in the universe(force of gravity, speed of light, strong nuclear force, weak nuclear force, proton mass, etc.) is so finely tuned(to support life?), that the only good explanation for the existence of these finely tuned conditions besides god, would be a multiverse and multiple big bangs giving rise to multiple universes.
Not true. What if a God(higher being) is up there causing these things to happen in a way that allows life to be supported. LOL. Thanks
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Force Inactive Member |
Taz,
Taz writes: Because everywhere we look things are accelerating away from us. Red-shift and CMBR are also evidence of an explosion over an expansion. Edited by Force, : edit Edited by Force, : edit Thanks
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Force Inactive Member |
Agobot,
Alasdair to Agobot writes: "How peculiar", thought the puddle. "This hole I am in is perfectly shaped to hold me. Obviously it was specially designed for me and only me to fit inside of it" Agobot to Alasdair writes: That's not even funny. What would you think if you saw a perfectly shaped pentagon puddle? I would think: "how did this get here and is that water ment to be there" Just because it is shaped like a pentagon does not mean that it has a purpose.
Agobot writes: If it's so easy to win the lottery, why is none of you a lottery winner yet? The point was that winning the lottery is a random phenomena but yet people still win.
Agobot writes: How many puddles will it take till you get the perfect pentagon shape? Your point is that it could not have evolved. How is that relevant? What if I am playing baseball, and the pitcher pitched the ball, and I hit the ball with the bat, and it just happens to go directly through a pentagon. Would that have a purpose? Better yet. If you look at alasdair last post it was at the exact same time and date I posted. Is there a purpose for that? That is very random.... Edited by Force, : edit - off topic wups.. Edited by Force, : edit Edited by Force, : edit Edited by Force, : edit Edited by Force, : edit Edited by Force, : not really off topic.. nevermind...sorry... Edited by Force, : No reason given. Edited by Force, : edit Edited by Force, : edit Edited by Force, : EDIT Edited by Force, : EDIT Edited by Force, : edit Thanks
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Force Inactive Member |
Greetings,
So what is out there that supports cosmic inflation? I realize we have cosmic red-shift but is there anything else? Also, why cosmic inflation over bulk explosion? Edited by Force, : edit Thanks |
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Force Inactive Member |
Cavediver,
the milkyway galaxy is our galaxy. ![]() Milky Way - Wikipedia Edited by Force, : edit Edited by Force, : edit - i just wanted to state that for the thread... LOL ... Thanks
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Force Inactive Member |
agobot,
agobot writes: How many puddles will it take till you get the perfect pentagon shape? http://EvC Forum: Cosmology 101 -->EvC Forum: Cosmology 101 What was the point? Edited by Force, : No reason given. Thanks
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Force Inactive Member |
agobot,
so, are you saying that if the conditions were different than we see in our universe that life, not life as we know it, but life would not be? Thanks
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