The Big Bang, Cosmology part 1: Crash Course Astronomy #42
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Date: 2022-04-04
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Comments and reviews: 10
TornadoMash
-maybe the universe has always existed and always will-
well, yes technically it has always existed and always will exist, considering when we're not looking at stars or other celestial bodies, we're just looking at a blank, empty black sky. supposedly, even before the big bang the universe had existed, it may have either been incredibly small, or just completely lifeless, lacking of any physical thing like atoms or quarks. even after the heat death, it will still exist, and maybe (my own theory, something will restart the heat and the universe will be reborn.
im gonna start going on-
that gives me a question. is the universe in a constant loop of birth, life, death, and rebirth?
how many times has this happened?
if this is true, how long does it last?
would it ever stop?
these are all questions a 14 year old should probably not be asking, then again, a 14 year old probably shouldn't understand most of the universe and how it works as adult astrologists understand it,
reply
-maybe the universe has always existed and always will-
well, yes technically it has always existed and always will exist, considering when we're not looking at stars or other celestial bodies, we're just looking at a blank, empty black sky. supposedly, even before the big bang the universe had existed, it may have either been incredibly small, or just completely lifeless, lacking of any physical thing like atoms or quarks. even after the heat death, it will still exist, and maybe (my own theory, something will restart the heat and the universe will be reborn.
im gonna start going on-
that gives me a question. is the universe in a constant loop of birth, life, death, and rebirth?
how many times has this happened?
if this is true, how long does it last?
would it ever stop?
these are all questions a 14 year old should probably not be asking, then again, a 14 year old probably shouldn't understand most of the universe and how it works as adult astrologists understand it,
reply
Small
The Big Bang theory has been accepted by a majority of scientists today. It theorizes that a large quantity of nothing decided to pack tightly together, -and then explode outward into hydrogen and helium. This gas is said to have flowed outward through frictionless space (-frictionless, - so the outflowing gas cannot stop or slow down) to eventually form stars, galaxies, planets, and moons. It all sounds so simple, just as you would find in a science fiction novel. And that is all it is. -IT THEORIZES THAT A LARGE QUANTITY OF NOTHING DECIDED TO PACK TIGHTLY TOGETHER- HOLD ON, LARGE QUANTITY OF NOTHING OR DECIDED TO PACK TOGETHER, - HOW CAN WE QUANTIFY NOTHING SIR, AND WHAT DO YOU MEAN THAT THEY DECIDED TO PACK TOGETHER, TIGHTLY. HOW CAN NOTHING PACK TOGETHER TIGHTLY, AND EXPLODE INTO HYDROGEN AND HELIUM, THIS FIRST PART FIRST SIR, CAN YOU PLEASE TO PLEASE PLEASE, EXPLAIN. THANKS-
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The Big Bang theory has been accepted by a majority of scientists today. It theorizes that a large quantity of nothing decided to pack tightly together, -and then explode outward into hydrogen and helium. This gas is said to have flowed outward through frictionless space (-frictionless, - so the outflowing gas cannot stop or slow down) to eventually form stars, galaxies, planets, and moons. It all sounds so simple, just as you would find in a science fiction novel. And that is all it is. -IT THEORIZES THAT A LARGE QUANTITY OF NOTHING DECIDED TO PACK TIGHTLY TOGETHER- HOLD ON, LARGE QUANTITY OF NOTHING OR DECIDED TO PACK TOGETHER, - HOW CAN WE QUANTIFY NOTHING SIR, AND WHAT DO YOU MEAN THAT THEY DECIDED TO PACK TOGETHER, TIGHTLY. HOW CAN NOTHING PACK TOGETHER TIGHTLY, AND EXPLODE INTO HYDROGEN AND HELIUM, THIS FIRST PART FIRST SIR, CAN YOU PLEASE TO PLEASE PLEASE, EXPLAIN. THANKS-
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BaldOldMan
It seems like scientists are always arguing about this stuff. Why is it wrong to accept that -infinite- means what it says (boundless, unmeasurable? The universe is infinite in age and size. It was not created. Stuff inside it may have a beginning and and and (age) but the stuff that makes planets, stars, etc. is ageless, nor was it created out of nothing. The Big Bang THEORY is not sustainable. Matter and energy can't be created nor destroyed. It's all really very simple. We like to measure everything we can perceive. However, our perceptions are not infallible. Remember when the Earth WAS the center of the universe? Who said that? Scientists. In time, our perception of the age (and size) of the universe will be changed radically. We will accept the infinite nature of the universe and the basic material that makes the stuff inside it.
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It seems like scientists are always arguing about this stuff. Why is it wrong to accept that -infinite- means what it says (boundless, unmeasurable? The universe is infinite in age and size. It was not created. Stuff inside it may have a beginning and and and (age) but the stuff that makes planets, stars, etc. is ageless, nor was it created out of nothing. The Big Bang THEORY is not sustainable. Matter and energy can't be created nor destroyed. It's all really very simple. We like to measure everything we can perceive. However, our perceptions are not infallible. Remember when the Earth WAS the center of the universe? Who said that? Scientists. In time, our perception of the age (and size) of the universe will be changed radically. We will accept the infinite nature of the universe and the basic material that makes the stuff inside it.
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Patrick
There is a flaw with the 'cosmic egg'. Turn the clock backwards. and things that are moving away from each other now - would of course be getting closer together. But measure the movement of one 'something'. and measure another something. Then extrapolate backward. and those somethings don't intersect. Everything was not at a singular point. They were at the beginning of an expansion of THIS piece of space, (our observable universe. Conversely, there is a 'contracting piece of space somewhere outside our observable universe. - possibly the other side of all matter. I want to offer a theory. - Our observable universe is itty-bitty, tinytinytiny, microscopic, relative to the entire universe. What we see as expanding is NOT all of matter. just all we see.
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There is a flaw with the 'cosmic egg'. Turn the clock backwards. and things that are moving away from each other now - would of course be getting closer together. But measure the movement of one 'something'. and measure another something. Then extrapolate backward. and those somethings don't intersect. Everything was not at a singular point. They were at the beginning of an expansion of THIS piece of space, (our observable universe. Conversely, there is a 'contracting piece of space somewhere outside our observable universe. - possibly the other side of all matter. I want to offer a theory. - Our observable universe is itty-bitty, tinytinytiny, microscopic, relative to the entire universe. What we see as expanding is NOT all of matter. just all we see.
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Pinto
Hold on. he said the galaxies are staying still but the universe is stretching, so why is andromeda is moving toward us and will crash into us in the very far future? I thought our galaxy is always moving? So the milky way and andromeda is not going to crash because in between the two its stretching? Then we wont have to worry about the two crashing billions of years from now? Also i have a hard time understanding how gravity is made? What makes gravity? Also if a object has mass does that mean it can't travel in light speed because light has no mass, then that means us humans will never get to travel at light speed? I'm so confused! My brain hurts! -
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Hold on. he said the galaxies are staying still but the universe is stretching, so why is andromeda is moving toward us and will crash into us in the very far future? I thought our galaxy is always moving? So the milky way and andromeda is not going to crash because in between the two its stretching? Then we wont have to worry about the two crashing billions of years from now? Also i have a hard time understanding how gravity is made? What makes gravity? Also if a object has mass does that mean it can't travel in light speed because light has no mass, then that means us humans will never get to travel at light speed? I'm so confused! My brain hurts! -
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Haji
As you are saying that the galaxies Abu the matter present is space are not moving by themselves but they are moving cause the space is expanding. what about the newtons laws of motion mean if any matter or any object is in motion it will keep on moving until it is stopped by any external force. Mean I don't understand thAy you said the galaxies by them selves are not moving they should move.
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As you are saying that the galaxies Abu the matter present is space are not moving by themselves but they are moving cause the space is expanding. what about the newtons laws of motion mean if any matter or any object is in motion it will keep on moving until it is stopped by any external force. Mean I don't understand thAy you said the galaxies by them selves are not moving they should move.
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Showmick
sir I don-t know whether you-ve made a video on what was before big bang and according to Einstein time didn-t exist before big bang I may be wrong but please make a video on it if you haven-t and please speak slowly as you're too fast to hear but sir thanks for you're amazing videos.
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sir I don-t know whether you-ve made a video on what was before big bang and according to Einstein time didn-t exist before big bang I may be wrong but please make a video on it if you haven-t and please speak slowly as you're too fast to hear but sir thanks for you're amazing videos.
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Danylo
As far as I am aware of there are some blue-shifted galaxies. If it's expanding following your ruler principle and the fact that galaxies do not move how can we explain them? Maybe they are moving pulling each other by gravity?
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As far as I am aware of there are some blue-shifted galaxies. If it's expanding following your ruler principle and the fact that galaxies do not move how can we explain them? Maybe they are moving pulling each other by gravity?
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Laiuw
There is also a lot of controversy around, well, then how in the world did an -explosion- create our bodies organs, limbs, the perfect placement of the earth and everything crafted so very perfectly from a -big bang-?
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There is also a lot of controversy around, well, then how in the world did an -explosion- create our bodies organs, limbs, the perfect placement of the earth and everything crafted so very perfectly from a -big bang-?
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Orgon
The moment you think you have a fixed numerical size and age of the universe you have failed.
There was no big bang, and the universe extend right to the edge of your imagination
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The moment you think you have a fixed numerical size and age of the universe you have failed.
There was no big bang, and the universe extend right to the edge of your imagination
reply
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