SEGRE LECTURE: What Makes Up The Dark Matter Of Our Universe
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Speaker: Blas Cabrera, Professor of Physics, Stanford University Through cosmology and particle physics we review our understanding of how our universe came into existence. Of particular interest is what makes up dark matter the source of all structure formation. Direct detection experiments such as CDMS search directly for dark matter particles passing through the laboratory, indirect detection experiments such as GLAST/Fermi look for gamma rays from dark matter particle-antiparticle annihilations, and accelerators such as the LHC at CERN may soon provide direct evidence for the structure of particle physics in dark matter sector. http://physics.berkeley.edu/
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This was a great lecture. Just packed with information. unlike other lectures that spend 20 minutes on one topic giving you their drawn-out interpretation.
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What is the name of the figure on the right on page 13 ?
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If a woman can be a physicist why can't she also be a good plumber...you know, fix toilets ? Just speculating of course ....
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Ya gotta clench yer teeth when listening to ass licking introductions ........Commercials everywhere, the boot polishers are always hard at work, Anyway, this is a very informative video..... Thanks
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The answer is easy : Nothing.
Dark Matter is a product of the outmoded belief in the single big bang theory and was pulled out of thin air to account for the missing matter as calculated via studies of our immediate universe. The calculations are correct but the single big bang isn't. When you accept the multi big bang theory, and that is big bangs happening throughout all time and space, then the missing matter becomes a thing of the past and the new explanation of our big bang becomes a future black hole resulting from a collapsed universe - possibly our own - that has grown so big that the gravitational well ruptures the fabric of spacetime. When this happens the matter erupts into a past time - possibly ours- and forms a new universe. Now this may be a bit of a large morsel to swallow, but it certainly gives a possible reason for our universe whereas the single big bang theory is that the matter just pops into being without any explanation.Wake up Earth and listen to the multi-big bangs popping off every which way. -
It's all wrong. He did not carry the "1"
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lecture @ 4:10 i myself love when first comment is a link to content, bypassing tons of asslicking and blabbering:)
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She needs to work on her laugh.
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Great talk. I have a couple of questions. First, there was talk of the neutralino, and the axions, and other potential WIMPs. Could dark matter actually consist of a particle zoo of various WIMPs rather than a single type? Secondly, since WIMPs must move fairly slowly, hence being gravitationally bound to a halo, then shouldn't it be possible for WIMPs to be captured into the orbit of solar systems? It would be rare for an interstellar comet to be captured since circumstances would have to be just right, but WIMPs are vastly more common.
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If the expansion of the universe is speeding up, what happens when it reaches light speed? or the speed of gravity? Doesnt the approach of light speed require infinite energy? And everything expands infinitly at this point? Hmmm....
And we are speeding up and expanding.... Got a headache yet? -
Use the background Quasars as a benchmark for positioning...
The Milkyway Galaxy is traveling at X speed in X direction. Light traveling in the galaxy is there fore actually traveling at greater or less than light speed depending on direction....
This means that light speed is relative to general proximity to mass. Or light within a moving galaxy is braked to a governed cosmic speed. Can this be observed???
What is the velocity of gravity??? Ikes..... -
The universe is static. Matter and anti matter simply arrear, annihilate, and energy is left over. A procreative proscess. Where does this matter/antimatter energy come from? What is the total mass of this occurring everywhere at all times? Are neutral particals colliding and creating the matter/anti matter? Is this giving us an illusion of the existance of dark matter and energy? I do not believe something comes from nothing... I suspect the mystery can be answered with black holes....possibly creating high energy neutral particals, and we cant see them being emmited...
Hmmmm.... -
Thank you UC Berkeley!
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Dark matter is pseudoscience :D
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our universe is tiny compared to dark matter energy around the universe
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this idea is total fake, they only waste governments (people's) money in hundreds billions $
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I really wish that speakers who reference the Hubble Law would point out (when they mention it as opposed to later on) that gravitationally bound galaxies (Milky Way / Andromeda for example) will continue to get closer to each other and eventually collide / merge (while galaxies they aren't bound to will continue behaving according to Hubble's Law relative to them...) No one has brought it up here (yet) but in general that "issue" is thrown around a lot as "proof" that inflation is wrong...
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um uh um uh. physics prof needs a script without
the um's and uh's. c'mon ol' man. get it together. -
if dark matter is stationary, why do we consider the universe still expanding? should it not already be a finite size, if the dark matter is already distributed and staionary?
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Standard Model is flawed. Over 20 things about the sun alone the are unexplainable by the standard model. Like why atmosphere is 2 million degrees and the surface 6 thousand. Why do particles accelerate when leaving the sun. In a gravity/dark matter model it will never make sense. In an electromagnetic universe it all makes perfect sense. There is a growing number accepting the elcro-universe model. Thunderbolts of the gods is a great doc on this.
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