The End of the Universe

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The Universe is expanding, increasingly so. Will this persist or will it collapse back on itself? If it does expand forever, what happens to the galaxies? What is the long-term trajectory for the ultimate in collapsed matter, black holes?
A lecture by Katherine Blundell OBE recorded on 31 May 2023 at Barbican Centre, London
The transcript and downloadable versions of the lecture are available from the Gresham College website:
www.gresham.ac.uk/watch-now/e...
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Опубликовано:

11 июн 2023

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Комментарии : 48

@donaldbustell Год назад

Thank you very much. I have greatly enjoyed all of Dr. Blundell's lectures. I am very sorry that she is leaving, but will hold out hope that she returns with a report on the work she is now setting out to do. [FWIW, I'm a retiree in the central U.S.]

@gabrieldunn7384 Год назад

You might like Carolyn Crawford's Gresham lectures from several years ago.

@seazenbones6945 Год назад

I have understood more about the universe through Dr Blundell’s lectures than ever before in my 60 odd years on this planet. I thank her and wish her the very best with her Global Jet Watch mission. Brilliant lectures. Thanks to Dr Blundell and Gresham College from Australia.

@user-ol2mr4bx7c 8 месяцев назад

You learn some serious word smithing with Dr Blundell. Word of the day: asymptotically

@Metaldetectiontubeworldwide Год назад

What a great lecture again ☆☆☆☆☆ I could listen to dr. Catherine 's voice, lecturing cosmology ,, forever . Grrz Johny Geerts

@iqiwq Год назад

amazing lecture, thank you!

@spaceinyourface Год назад

All ways enjoyed your lectures 👌

@elizabethclaypool1961 11 месяцев назад

Love love

@RichMitch Год назад

Wish it would hurry up

@WooliteMammoth Год назад

🤣

@charlesbrightman4237 Год назад

Don't worry, it will all be over soon enough.

@JJONNYREPP Год назад

The End of the Universe 2128pm 12.6.23 making vast generalisations and assumptions may just be the issue. Maybe science, like any other trusted source of propagating information and knowledge, should desist from making those assumptions. would that mean they would have to admit they know very little as opposed to one hypothetical notion taking precedence over all other notions????

@RichMitch Год назад

@@JJONNYREPP at least you have your day/date in the right order 🤝

@charlesbrightman4237 Год назад

@@JJONNYREPP "The End of the Universe 2128pm 12.6.23 " and above in my thread for this video you posted: "The End of the Universe 2131pm 12.6.23 ". Which is it, 2128pm OR 2131pm? Or is that 'start' 'stop' times of when the universe ends?

@user-up8jx3mt6j Год назад

It is true. If you pan away from planet Earth, our entire solar system becomes a speck and impossible to even see. Pan out further and our entire galaxy becomes a speck. Eventually the milkly way disappears completely. And this is only the currently observable universe. We can only see ~ a hundred billion light-years of diameter. This distance is unfathomable. And to think that it just goes on and on. What else truly disappears into oblivian, how big are your problems ?

@avivyat8694 7 месяцев назад

@JJONNYREPP Год назад

The End of the Universe. 2123pm. Can't. wait. What now until the end? Ummmmm... travel scrabble?

@ademrayen9146 Год назад

We all dead

@chadgun4135 Год назад

We need English language lesson

@charlesbrightman4237 Год назад

We apparently were all destined to die and go extinct even before we even ever came into existence.

@JJONNYREPP Год назад

The End of the Universe 2141pm 12.6.23 weirdly would folk have to pay for these lectures if they had something new to impart as opposed to giving the samel ecture from 300 years ago...? no doubt 30 years or so ago man city won the treble for the first time...? "match without observations" joke.

@charlesbrightman4237 Год назад

Dark Energy: Modern science claims that energy cannot be created nor destroyed. "IF" dark energy already existed in existence, then it should have already done it's thing. "IF" dark energy came into this existence from another dimension, then from what dimension? And then also, can energy leave this dimension? "IF" modern science is wrong and energy can be created in actual reality, can energy also be destroyed in actual reality? "IF" so, what then of existence in this existence?

@charlesbrightman4237 Год назад

QUESTIONS: What is the difference between 'energy' and 'dark energy'? Can anybody see 'energy'? What exactly makes energy 'dark'?

@TaunoErik Год назад

@@charlesbrightman4237 dark means the darkness of our knowledge

@JJONNYREPP Год назад

The End of the Universe 2131pm 12.6.23 if energy is created from other sources interacting with one another it would suggest it is an organic aspect of the known universe...

@charlesbrightman4237 Год назад

@@JJONNYREPP " if energy is created..." It would be interesting how that could actually occur, 'if' true. But then also, what if 'if energy is destroyed'??? What would occur to the universe and our existence then?

@acr08807 Год назад

@Charles Brightman You're right that energy is not conserved in an expanding universe. "Modern science" is well aware of this, so it does not claim that energy cannot be created or destroyed. Still, the expansion of the universe is slow over short distances, so conservation of energy holds for almost all practical purposes.

@jfhoward8264 10 месяцев назад

The Universe, it doesn't end...

@krunoslavregvar477 Год назад

Hmmm... Very nice lecture. But, in some critical staffs, I disagree with lecturer. And, I am not flat-earth-er.

@michaelhoffmann2891 11 месяцев назад

You may disagree and we are all agog to see your peer-reviewed paper on your alternate proposal!

@user-se2xm5yp6u 3 месяца назад

It had no start, and it will have no end.

@johnvaleanbaily246 Год назад

Sorry... I fell asleep listening... are we dead yet ?

@TaunoErik Год назад

you are sleepwriter?

@user-se2xm5yp6u 3 месяца назад

Yes so sorry we are, you can go back to sleep now

@paulcampbell7518 Год назад

Presenter makes constant reference to previous presentations - Those references are largely a waste of time - She could make far better use of her time by actually covering the topic in earnest, and without the constant self-promotion.