Wendy Freedman - Why is the Universe Expanding?

We know our universe is expanding—this is one of humankind's seminal discoveries. What caused such colossal expansion? We call it the Big Bang, but what were the forces involved? How do they work? What are the implications for understanding the cosmos? And why is the expansion of the universe accelerating? What does this hold for the future?

Wendy Laurel Freedman is a Canadian-American astronomer, best known for her measurement of the Hubble Constant, and as director of the Carnegie Observatories in Pasadena, California, and Las Campanas, Chile.

Closer to Truth presents the world’s greatest thinkers exploring humanity’s deepest questions. Discover fundamental issues of existence. Engage new and diverse ways of thinking. Appreciate intense debates. Share your own opinions. Seek your own answers.

[starmanstarman]

I hope my country Pakistan starts investing more in Science and Not in religion

[raghu]

I regret to inform the audio was way too low to hear anything. I can assure that my phone is ok, as I regularly listen to utube & other audio items.

I am wondering if others too experienced the same issue.

[AyubKhan-mdkm]

Such an interesting topic.. but the droning voice of the interviewer put me to sleep

[JAYDUBYAH]

Thanks for all the quarantine uploads dr Kuhn! I give you a lot of guff for the pervasive god of the gaps arguments in many of your videos, but I do appreciate all of your work and vision and the incredible interviews with scientists and philosophers you’ve made available to us 🙏❤️🙌🔥

[shayaandanish]

Why did you make this video. I mean I love your work ofcourse the question is from a different perspective. YOu obviously didn't make this video because you have a voice and eyes to see with but that you had a purpose and meaning to do this video.
Similarly, I believe a more accurate question would be how is the universe expanding, why is a question of meaning reason, something science doesn't give

[ericlind]

The fundamental assumption though is that the red shifted light that we measure is indeed caused by the Doppler effect. There are some alternative theories though as to what causes this redshift which would mean that stars are not accelerating away. The Doppler effect assumes a vacuum and empty space looks like it’s not a vacuum, as the lady mentioned. I think the verdict is still out.

[tedwashburn]

Ted
I am making sure my granddaughter (age 10) sees this so she will know that women are welcome in science and can contribute at the highest level.

[newandoldtech]

Because it is needed for the balance sheets?

[SernasHeptaDimesionalSpace]

thanx for the space to put our ideas at the table CTTT. - Its beeing noticed that matter and gases that come out of the suns corona they speed up after leaving the suns electromagnetism that encircles the sun, this effect is done because all systems are made with levels where the center(WHITE SPHERE) has more pressure than the rest(six other levels) so when the matter and gases scape from the sun caused by a sun explossion or explossions they are forced into a level of less resistance that is the cause of the speed up; same thing happens to the super nova readdings that hubble fits perfectlly inside but as soon it gets out of the system that encircle the supernovas hubble just dont fit cause then comes a much less dense level so stars are more far apart. - She says that the readdings fit perfectly but is the first cosmological person that says such a thing, but maybe Iam wrong.


The universe isdivided by levels, that is 7 steps in length wave so the readdings of super novas should not read all the same cause as you look farther distance in between one level to unother level must to be gratter cause supernovas are not an exeption in levels there must to be as well 7 tipes of super novas.



Recomend to see Sabine Hossenfelder in the video:HOW GOOD IS THE EVIDENCE FOR DARK ENERGY? Dr. Subir Sarkar says that readding the data as it comes with out the fadch that cosmologists put to it it says that the universe to one side its expanding and to the other is cotracting, to me is nothing else that the steps in wave length that the universe has.


Actually we are inside white if we see the universe as a rainbow cause matter always follows atomic weight in rainbows order so practicly they are just measuring the inside white that is where we are in the YELLOW BELT, that is why when we see down it looks like the universe is shrinking and whan you see up it seems its expanding.


As it looks to me the size of the universe will come up to be to 68.5 BLY based in a Mayan Calender(TZOLKIN) that I decoded cause the farthests we have seen are RED inside white atars they are missing 6 other levels cause they cant see through VIOLET cause is of a higher frequency with maybe an exeption that is when they see trough the block spot that they call it THE HUBBLES DEEP SKYES cause as our sun the visible universe as well has block spots that are windows to look out so is posibl they have seen out of VIOLET.

[SernasHeptaDimesionalSpace]

Of course is not zero, take a look to many cosmos pictures from around the world always south side brakes more that north, cause north are gaseous and south are the rocky ones, we just cant read the entire inside universe w are missing more than half of it you can tell just by the CMB readdings from our point of view but we are able to see inside systems that tell that both sides are not the same and knowing that all systems work about the same the answer is THE UNIVERSE CANT BE ISOTROPIC other wise we would not be here.

[alexf]

Strangely, the idea of the universe expanding seems perfectly intuitive (but perhaps is a ignorant illusion on my part.)

Considering that the universe doesn't appear to be in a container, is generating gravitational waves that carry matter, and gravity isn't attracted to itself like matter is it only seems inevitable that whatever shape the universe takes it would be expanding.

Imagine a sphere of water in zero gravity with a wave generator at its center. Due to waters surface tension the waves would likely only cause temporary expansion. But unlike water, gravity isn't directly attracted to itself so that sphere if made of gravity with matter scattered throughout wouldn't have the equivalent surface tension to hold itself together.

[das]

I would bet James Webb changes these conclusions.

[eugenechun]

The Suns are nourishing and growing space which is also increasing in thermic temperature....space is an entity...it is both a flat plane and a negative plane and has various personalities...i

[desimoneiwanttoknow]

If the Universe is accelerating apart, there must be a force pushing outward from the center of all matter. And, we know that with every action there is an opposite and equal reaction. So, where is the acceleration inward? Could that be the gravity we detect?

[dragosbogdan]

Do something with the quality of sound ctt, it s a pitty.many of your vids with that problem

[SernasHeptaDimesionalSpace]

My thinking is that as well as all the other tellescopes and Hubble all they can read is an everage of light that come to theyre lenss.

[DavidOfWhitehills]

Sabine Hossenfelder is doubtful that the expansion of the universe is accelerating, because of much improved astronomy since the the original Nobel Prize winning paper on the acceleration. If it is not, then Dark Energy is a dead idea.

[quantumofspace]

No need to complicate; The universe consists of a quantum oscillation "rosebud". As the rosebud grows, the energy of electromagnetic quantum fluctuations decreases. If the rosebud shrinks, the energy of the electromagnetic quantum fluctuations increases.

[lassoatrain]

I think if they would listen to what they say they. Will have the answer. She said "it is something else making it accelerate as it expands, something repulsive to gravity"
Come on think repulsive to gravity what is the opposite of gravity? Come on remember 6th grade, come on, ok inertia
What causes inertia? Spin. The universe is spinning and the farther you get from the center the stronger the inertia becomes.and then what keeps us from expanding into Infinity is not gravity .I think gravity would become similar to the weak force and I stead the larger the universe becomes it is the vacume that is the limiting factor. Think about it the universe is spinning like pizza dough thrown in the air spinning, it flattens out along with the firmament that defines our universe limits as it stretched an flattens out it is the vacume that is responsible for holding us from reaching the speed of light. Every time a cosmologist comes to a road block to there flawed theory they simply say quantum hocus pocus dark matter dark energy noe fill in the blanks. ..the universe is spinning .some time in the future as I suspect from the missing mass problem the stress will be to much and instead of a big crunch or on and on for ever we will divide in 1/2 and become two universe's where just a short time before there was only one. Like mitosis you know cell division.

[michaelsmith]

Just the politics of astronomy with very little science.