Dr, Amy Mainzer about the cosmic microwave background radiation

[okuma0kuma]

so the universe is a 2 dimensional entity ?

[TheFaustianMan]

What a canard. So there was explosion, then it slowed down for a mixing session called a "twist", then a uniform acceleration, without any inherit additional energy or mass to explain this?

Or so it's either Twist, thermodynamics, or p=pm would violate x∆p ≥ ħ/2?

Is this what passes for science now a days? This is about as arcane as saying we all come from The Garden of Eden.

[deedubya286]

@TheFaustianMan It does have a hint of deus ex machina about it, doesn't it? Still, I'm not comfortable with dismissing inflationary theory just because it doesn't seem right to me.

Shouldn't that be "delta x" in your Heisenberg equation? Also, how the hell do you manage to produce the "delta" and "h-bar" symbols on a computer keyboard?????

[junkfood66]

@TheFaustianMan you might wanna watch neil turoks talk from 2008 about the big bang: /watch?v=M9iJMWJdyw8

[rubaiyat300]

@TheFaustianMan That's a strange position to take. Historical figures no less astute and erudite as Einstein and Pauli both basically put in "fudge" factors as purely mathematical constructs to balance their equations that ended up being vindicated for it. This particular model might not be right, but the behavior itself has ALWAYS passed for science. Making testable predictions and passing them being the hallmark of good science afterall.

[cpdfk]

I am always grateful to hear someone SO brilliant speak, thanks for posting! I am sorry Dr. Kaku, but Dr.Mainzer is much more enjoyable to watch!

[bladid]

fundamentally speaking. yellow and blue not mixing because of the mass of the state before the big bang prevented the two from doing that. but that doesn't mean that'd it have had to be distributed on only one side of the explosion does it? it sounds fishy that the two wasn't shot out everywhere together even though in it's single state. so I'm asking (even though that's only one possibility). why do they explain it like that?

[pseudorandomly]

@bladid

(cont) The answer is "inflation", which arose out of Alan Guth's work while he was trying to figure out something else entirely. His work indicated that the very young Universe went through a period of expansion at far faster than light speed. Thus, the very, very young Universe *was* connected together by light-travel times before inflation separated volumes of space to distances much greater than the light travel time.

[ObiTeninch]

"This would spread green paint all over the universe."

That's a hell of a cleanup job...

[Polydynamix]

Sometimes I think the universe talks down a little much. I mean I love a good visual aide as much as the next guy, but there is a such thing as over simplifying.

[popeyeus]

If water and lenses can slow light down less then it vacuum speed, then what does dark matter do to its speed? Would this also prevent us from seeing the big bang

[Hornet85]

I'm actually surprised the producers did not requested for this video to be removed altogether. A very good move on their part, I must say. A far cry from what the movie studios would have done.

[JuhuTuubi]

Could the inflation theory suggest that the big bang and our universe was preceded by a collapse of an earlier universe?

[mjordan072]

@JuhuTuubi From what I understand (as a fan of science, I'm not a scientist at all) there is a growing belief in a more cyclical theory that takes properties of inflation, but allows for a long expansion in the universe, then a collapse, then expansion, etc., mostly because some of the mathematical properties of the inflation theory would have needed to be in place BEFORE the big bang occurred. Can't wait to see what the next few years of research will bring!

[tintiringa]

What the hell was this about? If this was an analogy of some sort, they took it so far that it is gibberish.

[petion2010]

@tintiringa It's an area of cosmology

[xorboy]

oooh. this was a somewhat retarded explanation.

[mdimascio]

I have yet to see an explanation of why scientists don't expect such homogenous dispersion of matter and energy. This paint can example doesn't explain it either. Why would we expect the big bang to send out matter and energy in a non-homogenous way?

[dexluther]

@mdimascio Because that's what we observe elsewhere. Think 'forensic science in space'. According to their theory there can very well be non-homogeneous parts of the universe, but they would be way beyond our current visible radius.

The non-homogeneous parts may only start at 20 billion light years, but we can't see past 14 billion years because of the speed of light. The light from the un-even parts of the universe hasn't reached us yet, so we are completely blind in that area.

[pepicanable]

@dexluther

okay, but shouldn't it be still impossible to mix even if the colours are more nearer to each other simply because of the speed of light limit being exceeded?

[puncheex]

@pepicanable: There are two variable: either the early universe mixed or it didn't, and that it mixed before inflation or it didn't. The only values for the variables that appear to exist today is that they mixed, and before inflation. All other combinations will result in differences in the CBR in different directions.

[MuzzleBlast357]

I sincerely hope, as a Southern...ah say, Southern gentleman...that it isn't inappropriate to point out that Dr. Mainzer certainly knows how to hold my attention. It's something about the...er...blues and the greens, ah reckon.

[azamon]

I always thought she was beautiful. She's also very intelligent. I'm not sure what trait it is that makes her so attractive.  I really like the series "The Universe" and always like to see and hear what Amy, and the other scientists have to say.

[ih8mcfly]

that shade of blue in that paint pot is great

[lowerlowerhk]

So what's beyond all the galaxies? Is there just endless empty void?

[Laurelindo]

@lowerlowerhk If you think of the universe as a kind of "3-dimensional earth surface", then you will get a sort of understanding for how it can be infinite and yet have a limited size.

Earth has no borders, but it is not infinite - space is kind of the same.

And time itself was created with the Big Bang, so anything that is not space is absolutely nothing, not even void.

[jrpaint62]

Amy is a lot more than a pretty face.

[Bosingr]

I wish these clips were in HD. Amy is the best part of The Universe in HD.

[Piscivorus]

The uniformity of the CMB pretty much proves that a creation event followed by an FTL inflation event is simply absurd. And that the Earth is always at the center of the big bang universe is equally absurd. The universe is expanding but, it's certainly not expanding from a point singularity. The CMB supports a cyclical universe that expands and contracts repeatedly like a sonoluminescent bubble but driven by enormous gravitational waves rather than sound waves.

[seneca65r]

I probably just can't keep thinking " in the box" For me I fail to see pain on a kitchen table illustrating quantum and relativisyic phenomenon. Inflation & re-normalization are just "NOT EVEN WRONG" but so badly wrong it shows a more important description of the universe. Yes I say the CMB is an event horizon we observe from the inside. Understanting this we can place BBT inflation, as discarded dogma. then move along to see matter, energy, time & space CONTINUE to accelerate into existance

[imuda1]

thx for uploading great video from Amy :)

[junkfood66]

Producers of "the universe"have asked me to remove all inapropriate comments on these clips, and i have complied. Please do not post dumb comments that are offensive to dr. mainzer or i will have to close the comments section. Thank you for your consideration.