This is so addictive. After having seen one lecture, I begin to crave another one in a matter of a few hours. I will NEVER look at the night sky the same way again. She is such a wonderfull "storyteller". Her english is very clear and easy to understand for a scandinavian. Hopefully she will give more lectures in the future, since history is happening every day in this field.

It is amazing that she can deliver her lecture without hesitation or stumbling and tellingly-without referring to her notes! Truly an academic on top of her subject,worthy of all our admiration.I am getting a lot out of these videos and will continue to watch and learn.

@AjarnSpencer

9 жыл бұрын

Gregor Kropotkin Although i myself consider it ubiquitous to speak without needing to stumble or hesitate to remember things or to look at notes, i also agree that a person who is truly knowledgeable in their chosen topics should be able to expound their treatise in the manner you describe. Agreed, she loves what she studies, and she knows from her own experience, whereas many do not know all that they teach, and just draw their speeches from a few days of hastily gathered notes. Not all teachers possess this gift or level of knowledge which is drawn from years of not going to parties, and the solitude of self education

@ronaldderooij1774

8 жыл бұрын

+Ajarn Spencer (Asrom Por Taw Guwen) Not going to parties for years also has a detrimental effect on people, you know. Like learn social skills.

@superstringcheese

7 жыл бұрын

I like her lectures too, but I don't see anything "amazing". This is her job. It's like a singer who can deliver a song in key, on tempo, without forgetting the words or looking at the music. Or a carpenter who can hammer a nail without dropping the tool or reading an instruction manual. It's just competence.

@jom5011

7 жыл бұрын

You attended any university-level science lectures? I assure you that competence in lecturing isn't so common as you might think from watching Prof. Crawford

@ianian8022

6 жыл бұрын

driving a car? they are making it harder and harder such that soon we will have to buy a computer to drive it (unlock it) just to pay more.

She is my favorite to listen to. I love all these lectures, several different channels and Professor Crawford is my top fav 💜 Not to mention she's easy on the ears...

An outstanding presentation. Many thanks Carolin and Gresham College.

Thank You Professor Crawford for a most informative and despite such a long talk, ultra concise explanation of every single subtopic contained within your talk. My knowledge is now much more finely tuned and brought up to date. Extremely Appreciated.

She's an excellent lecturer

I always enjoy her lectures. I've long ago given up on most of the astronomy and history programs, as I know considerably more than they can cover for the general public, but Dr. Crawford is always full of new and interesting information. Gresham, could you please invest in training or hiring a light and camera technician?

@evfich

4 жыл бұрын

Here here.

Maybe the most cultivated ghost I've watched in my whole life

I want the professor back in 2016.

she is an amazing speaker and great explanations, thanks for this video Gresham college

Professor Crawford is a wonderful presenter of information.

Great lecture. Thanks for publishing this.

I discovered physics puts me to sleep in 1969. The great sleepy lectures are by Carolyn and Roger Penrose.

Really fascinating stuff. Thanks for posting.

The evolution of of these cluster Galaxies supports Halton Arps theory that super active Galaxies are producing Quasars that evolve into Galaxies which will then form a cluster. As it was pointed out that at the center of these clusters is a prime or super Galaxy. This would be the original Galaxy that gave birth to the rest.

She is amazing

Amazing. Thank you.

I would hope that when we pass from this life, that somewhere in one of these galaxies is our next journey!

Question! Re: 6:10-6:25... which smaller spiral is Professor Crawford pointing to for comparison of our own Milky Way to those giant ellipticals? Thanks in advance for the answer. This is a fantastic lecture. Thank you, Gresham College.

we still know litle about our own galaxy,,

She is so good!

so clear

@sushaminirastogi7389

6 жыл бұрын

Herve Precioso

Can we figure out a mathematical equation to estimate within a high probability the density of clusters, it seems that is possible, and it maybe a mathematical law of nature in other venues as well, such a formula would be immensely valuable to humankind. BTW - awesome video, wow, excellent. Keep posting your great information.

Very cool!

I showed my grandfather a grouping of galaxies near Mizar and he asked why are they in big clumps then he said they look real far away. He was just a farmer with no education and recognized what they were.

Fritz Zwickey, the De Niro of cosmology. You talkin' to me?

Could the universe be living organism?

I love this so much but I wish those lights weren't so darn bright. I've got my brightness turned all the way down and it's still hurting my eyes. Not really meaning this as a complaint, or am I? It's a lovely video though. A lovely channel actually, one of my fav's.

So, if this inter-cluster medium is full of hot, x-ray emitting plasma, what connotations does this have for life on planets around the stars in these galaxies?

Isn't the barycenter of the local group less than halfway toward the milky-way? I thought our galaxy is heavier than Andromeda because it has more dark matter. I thought the milky way is really massive compared to most spiral galaxies.

There once was a lady named Bright, Who traveled much faster than light, She started one day, in a relative way, And returned on the previous night! What shape is the Universe in ? The Universe is in Great Shape for an Old Universe!

@roundearth2619

7 жыл бұрын

Right on

wow

the spirial starter

The reason it has no spirals is it has nothing left to suck in from around them.

Add another spotlight

What is wrong with my computer? I played this video and it played two copies, I stopped it and it kept playing.

@ronaldderooij1774

10 жыл бұрын

Dark Microsoft...

You can see triangulium.

My hypothesis that Dark Matter is not a WIMP, but maybe is a deformation of space-time by which the curvature of space-time ALONE is the cause of the gravitational effect. Gravity is the consequence of the curvature of space-time. It may be possible that the structure of space-time itself could be warped without the presence of mass. Space-time has been shown to react like a fabric by warping, twisting, and propagating independent of mass. These properties have been proven with observations of gravitational lensing, frame dragging, and now gravitational waves. Fabrics can be stretched, pressured, and/or heated to the point of deformation. Such extreme conditions were all present during inflation, so it is plausible that space-time’s elastic nature could have hit its yield point and permanently deformed. Therefore, if gravity is the consequence of the warping of space-time, and fabrics can be permanently deformed, then a deformation could create a gravitational effect independent of mass. Thus, the unidentified dark "matter" that seems to be so elusive to modern science may not be matter at all but merely warped deformities causing gravitational effects. DM could be a microscopic black hole with no mass at the center... Prediction: Spacetime's elastic property hits a yield point, so only that part of geodesic's "stretch marks" would remain after inflation stopped. These steep gravitational wells would not follow the inverse square law. I am looking for Theorists or Experimentalists to help me develop ways to test this hypothesis. Is there a way observationally to test it’s gravity does not follow the inverse square law?

@the_kingslayer

5 жыл бұрын

My friend, I have thought the same thing for a while now, I'm glad some one else has this hypothesis. I think the entire universe kinda hangs in a frame work of unseen space warping that causes the appearance of 'matter' like effects

The New Theory of Everything continued (m = E/c^2) is the formula for matter. 'c' represents speed. But in T.O.E. temperature 't' could represent speed! So, (m = c/t^2)! The lower the temperature the lower the Energy! And Matter would form! This would apply to atoms, electrons/protons, bosons/mesons, quarks/anti quarks and X particles ( theforce of gravity)! X particles were the first Matter to form after the Big Bang! Then all other Matter! Energy changed into Matter!

packly dense

Why are we here and where did we come from, Stephen Hawking asks? This subject, Nuclear Force Energy, may be a good one for undergraduate students!

I have a problem with an expanding universe which is also isotropic, because most galaxies seem to have tumbled or will tumble into other galaxies, like Milky way with Andromeda, rather than the expected moving away from each other due to dark energy. Do we fail to understand celestial mechanics?

@ronaldderooij1774

8 жыл бұрын

+Naimul Haq Yes we do. The antigravitational force we call dark energy that is propeling the expansion of the universe is extremely weak. So it can easily be overcome by local gravity. Local in the sense that distances of millions of lightyears is local when we talk galaxies. Hence, dark energy only has an effect on the largest of scales, like billions of lightyears.

@naimulhaq9626

8 жыл бұрын

Ronald de Rooij Still not clear, if on the local scale galaxies did tumble into each other, and still are, what is the effect of accelerating expansion?

@ronaldderooij1774

8 жыл бұрын

+Ronald de Rooij Sorry I cannot make in clearer.

@naimulhaq9626

8 жыл бұрын

Ronald de Rooij When you through a stone in a pond ripples propagate out towards the bank, similarly light from the sun propagate out to the farthest reaches of space. Is it light that propagates outward or is space expanding? I am not sure, but locally galaxies tumble into each other (as we can observe), while light from galaxies move outward giving the false impression of space expanding, what do you think? Does that make sense?

@brandonbooker3775

8 жыл бұрын

+Naimul Haq Galaxy clusters recede from each other. Redshift is observed in distant clusters. Within a cluster, galaxies interact by their mutual gravity. Dark energy overrules gravity only over vast distances.

trippy girl

Meer-aj

,canvea la moneda por la naturaleza

@sabrinavaldez8869

9 жыл бұрын

Red

This is my final Theory: The New Theory of Everything and Nuclear Force Energy Theory! Please enjoy reading them! I enjoyed writing them!

sprial

I don't understand why it took so long for astronomers to figure out what galaxies are and that they are in clumps. You can look at Andromeda and Triangulum with a small telescope and clearly see they are separate galaxies but you really can't see individual stars. If you just do a thought experiment assume the sun is 100000 times brighter than a full moon. Assume the Sirius is 25 times fainter than the moon. We say Sirius is 675,000 times as far as the sun or about 7.5 lightyears. You can get within a factor of 2 just doing a thought experiment.

Alien exist...

Phew! Thank god for the fact that no jesus freaks didnt show up in the comments section! Thanks for the Upload. Great video/presentation

@allen764

9 жыл бұрын

Are you actually trolling for a troll?

@paulwilkinson1539

9 жыл бұрын

HaHa. It may seem that way eh, but I was honestly relieved to see a comments section free of bible freaks laying claim to all the wonderment of the Universe by zod. I actually think that most of 'them' are probably too unintelligent to actually understand such lectures anyway ........

@RobSinclaire

9 жыл бұрын

Paul Wilkinson They are just clinging on like children do - and for that reason everyone must have patience. (the big freak himself said it well: "Suffer the little children..." ha, ha, ha, ha, ha ...)

@chasingamurderer

6 жыл бұрын

Paul Wilkinson u fuck... Jesus is a symbol to set a better path. It doesn't make you smarter to not believe in good paths, but instead , the biggest moron ever...ppl need something as a guideline

dark matter must be god then

,canvea la moneda por la naturaleza

@fredtoddtodd4321

7 жыл бұрын

Samuel Torres ledlightbulb😂