The Transient Universe - Professor Carolin Crawford

Time Domain Astronomy is astronomy in four dimensions and its allowing us to unpick the largest and quickest celestial events in never before considered ways: www.gresham.ac.uk/lectures-and...
Many disparate phenomena in both the local and the distant Universe have properties which are time-variable, and constant monitoring of the sky at all wavelengths is required to catch the occurrence of these events. Observations of the transient Universe cover all of modern astrophysics - from variable stars to unusual and violent events such as gamma-ray bursts.
The transcript and downloadable versions of the lecture are available from the Gresham College Website: www.gresham.ac.uk/lectures-and...
Gresham College has offered free public lectures for over 400 years, thanks to the generosity of our supporters. There are currently over 2,500 lectures free to access. We believe that everyone should have the opportunity to learn from some of the greatest minds. To support Gresham's mission, please consider making a donation: gresham.ac.uk/support/

[@koldfushen]

I have seen several lectures by Prof Crawford; she is no lightweight. Very knowledgeable, great communicator, fluent, enthusiastic and articulate. I am impressed. Wish I had profs like her for my education. Many Kudos.

[@CandideSchmyles]

Crawford really takes the biscuit in consistently delivering easy to understand, info packed excursions into the workings of our cosmos. The next rung up in depth and complexity than that found in popular TV astronomy for me Caroline knocks the socks of Brian Cox. The whole series of lectures here is growing into, in my opinion, the best collection of non academic astronomy lectures on youtube.

[@ohmydaisies]

yeah she's amazing

[@brucehayman4206]

I think she is great as well, but Ian Morison is my personal favorite.

[@toobeefreetoo]

I've watched all of Professor Carolin Crawford's lectures. (More than once.) Posted some on face book. She is the best. :)

[@hrperformance]

watch her live! you get to ask her questions after! upcoming lectures are on the Gresham college website

[@RonJohn63]

Star Trek Theory Probably because she doesn't say outrageous shit like they do.

[@DwayneBSapling]

A fantastic lecturer. I really wish Dr. Crawford had been one of my professors at university,

[@jilleast5475]

I and David love her lectures and she is so kind as well .we both love and respect her.

[@TheWraithkrown]

This is one of the most interesting lectures I have watched in a while. It is cool to see changes on an astronomical scale.

[@santyclause8034]

If this was so great a change we should see a measurable increase in social security payment and wages income.

[@h.i.5280]

This is absolutely mindblowing. So wonderful. Thank you Prof. Crawford!

[@roberthogben1507]

Well done Carolin - great talk

[@mrautistic2580]

Her best lecture by far!!!

[@Erkynar]

Great talk! Thank you so much.

[@chrisa4800]

This is a must watch.

[@911review]

so i learned this as a kid... - "Every action, has an equal and opposite reaction" but, i never understood this when it comes to gravity... it seems obvious when talking about 2 objects touching each other (electromagnetic force) but, when 2 objects (lets say the same size - 2 basketballs) are attracted to each other at a distance, then, it is gravity acting on them... if they both are moving toward each other, is that really an "opposite" force ? my theory is that since photons can act over large distance, so can gravity... and if all objects (with mass) are attracted to all other objects with mass, then there should also be a repulsive force somewhere ? maybe this is dark energy ?

[@frl8031]

Fantastic lecture, thanks!

[@ariessweety8883]

Dang at 17:40 looks like it could be a cloud formation on Earth. Beautiful!

[@kelamuni]

how is it that a talk about astro physics is unable to give us an adequate use of a PA system?

[@TinselKoala]

Yes, I've listened to other talks by Crawford in this same venue with much better sound. This one is very difficult to listen to.

[@life42theuniverse]

14:00 How much dust is there out there that just isn't illuminated?

[@citabria808]

I have to agree that the sound quality is poor. If they take the time to film her lecture, can't the sound be wired directly to the video, instead of listening to it through the speakers in the room? I had to stop this particular recording at 15 minutes as the poor audio was giving me a headache. I really like most of these videos with Ms. Crawford.

[@FlockOfHawks]

you were almost patient enough : after 15 minutes most of the beeping and halling are gone .

[@tomcmlee]

Perhaps it has to do with how much dark matter is in the individual stars.

[@viettouristviettourist9010]

thanhk

[@schmeegil2240]

Does anyone agree our star has changed colour from yellow to white?

[@eXtremeDR]

Time scale - is that the reason why the universe's expansion is still accelerating? The explosion is still evolving? Maybe that's also the reason why we fail to observe quantum scale movements in detail - it's out of our observable time scale.

[@ohmydaisies]

the big bang wasn't really an explosion, it was just the instant when space began expanding and time began. and it's only been in the last few billion years that the expansion began accelerating: before that it was actually slowing down. but now it will continue to accelerate faster and faster into the future. i don't know much about quantum physics though, but maybe you're right about that. quantum observations are notoriously tough to do.

[@ghostfacechilla1027]

+Sebastian David Kraemer where can I find information about the universe expansion slowing down before speeding back up again??

[@user-bx7nw1ve6y]

Terrible sound quality.

[@Giavani-wq7gb]

I really enjoy professor Crawford's lectures, and without insulting or degrading the accumulated knowledge of those sincerely seeking the advancement of human wisdom, I must never the less keep in mind the limitations of our mortal endeavors. Temporal beings, no matter how sophisticated they may become in inventing sciences and instruments to collect and decipher observable data, remain terminal in nature. How can beings which live to the short lengths we are locked into, state what happened billions of years ago? An old argument , I know, but relevant. In actuality, the silliness of a history spanning some thousands of years in the quest of accumulated knowledge by beings temporal such as we are, stating with any authority the progression of millions and billions of years, is rather pompous. The very condition of imperfection further seals the argument of a terminally flawed process of reason and collection of results. But it is all entertaining just the same.

[@Giavani-wq7gb]

Everything in context. And whether we are doing better than primate species may be debatable.

[@Giavani-wq7gb]

I'm not co-evolving with anything, however, there are those who definitely have evolved from the original template. I'm aware of that.

[@Giavani-wq7gb]

Dream on. And be sure to drop in and say hello to your distant cousins. Be sure to take a banana with you. One for them, and one for you.

[@Giavani-wq7gb]

Two sentences. One for you. One for the cousin. Pay attention. My scientific ability is not measured by your standards. Evolve a little quicker and keep up on grammatical nuance.

[@Giavani-wq7gb]

Finish your education.

terribol sound

[@kelamuni]

ya, very difficult to listen to.

[@schmeegil2240]

Terrible yes

[@rgaleny]

See: The Electric Universe and it's Model.

[@user-hl2uw1ci7f]

@):-