There are PROBLEMS with the Big Bang Theory!

#Cosmology #BigBang #Inflation
The Big Bang model is one of the most spectacularly successful paradigms in all of science. We have robust evidence for a dense, hot, early phase of the universe, ranging from the origin of matter to the existence of the Cosmic Microwave Background radiation that I study. But how did the Big Bang itself happen? Why does the Universe have the peculiar features that it does?

The answer, according to many cosmologists, lies in the theory of Inflation. I've pointed out some uncomfortable consequences of inflation, such as the Multiverse, in previous videos. But today's video does a deep dive into Inflation's many successes and points out ways it solves several problems in the Big Bang Model.

An inflation crash course!

Cosmic Microwave Background maps courtesy of NASA’s WMAP and ESA’s Planck

Join this channel to get access to perks:

🎥 🎥 Watch my most popular videos🎥 🎥

-~-~~-~~~-~~-~-
Please watch: "Neil DeGrasse Tyson: Plays the Race Card!"
-~-~~-~~~-~~-~-

[DrBrianKeating]

Are you convinced that inflation is the answer to cosmology's unsolved mysteries?

[jyjjy]

"So, the numbers become astronomical."

Hmm, really. The number of astronomical objects becomes astronomical... you don't say 🤔

[Thor_Asgard_]

as a physics student in germany such things always blow my mind. existence is really mindblowing.

[bigdefense]

I’m not smart enough to know if you’re right or wrong, but I respect you talking about alternate points of view and showing the issues with the things everyone seems to take for granted

[animefurry]

Sabine sent me, and im not disappointed, in fact very impressed!

[captainzappbrannagan]

You would need a particle collider the size of the universe to test inflation, I'm not sure we will ever have certainty, thankfully we don't require certainty. I'll be interested in testable prediction review.

[JimGobetz]

More excellent content, these videos make a great addition to your interviews. Thanks as always Brian, your work here is much appreciated

[milanpintar]

Can't the CMB temperature be caused by energy coming from another dimension or even more likely, a scalar variable that represents the real universe in which the observable universe is being spread into?

[thomasgilson]

2:12 Wouldn't it be more accurate to say "in the *observable* universe"? The statement, as is, implies that there is a known size of the universe and it exactly corresponds to the optical horizon at our current location and time.

That could even be modified to read "in Earth's current time- and space-adjusted observable universe".

[chuckschillingvideos]

2:58 "Inflationary cosmology is a paradigm that predicts an early, ultra fast, exponential expansion of space-time itself"

I'm wondering how the past can be "predicted" ?? Inflationary cosmology is a potential explanation, but NOT a prediction of the origins of the universe as we know it.

[roncraig]

Brilliant lecture Dr Keating! I really enjoyed this. So many "unsolved mysteries" out there that still need to be solved...

[elaadt]

Great video! I'm looking forward to the following ones.
I have but one question: how does one go about measuring angles of a triangle on the cosmological scale?

[trinity]

I really enjoy your teaching Dr.Keating and I’m fascinated by physics and cosmology, but I have no education at all. I get that the universe is flat and the observable universe is 93 million light years across, and all the same temperature, but how deep is it top to bottom?

[RavenJack]

Also have you done a good segment on the electric universe. I have seen some debunking videos that appear, to me, to fail to attempt to steelman some of the ideas. So for instance, some will say - oh electric universe proponents think gravity doesn't do anything - which is of course ridiculous and untrue.

In particular - what do you think about the idea that perhaps we are misinterpreting redshift - that perhaps the redshift-distance correlation we see is from something other than expansion?

[darioinfini]

We can study inflation in real time as we print endless supplies of money to chase limited goods and services. They must have been doing it at the beginning as well.

[diGritz]

I ask the same question every time I look at Youtube's recommendation list.

[MuharremGorkem]

The most informative and well-presented video ever on the topic! Thank you Brian!

[SernasHeptaDimesionalSpace]

We might never know how we came to be as well matter but sure it would be a need to know how systems work: say sub atoms, atoms, cells, organs, our body, planets, stars, galaxies, clusters of galaxies etc.

[andrewjohn]

Great presentation. It's great to get this kind of cutting edge content with nice graphics and explanations. Because of you we don't have to wait 7 years for the Discovery Channel to catch up with a poorly explained dumbed down version.

[mbusbridge]

I was half asleep when magnetic monopoles came up... that sound effect... I thought there was an angry beaver under my bed! Freaked me out man.