Star Dust - Professor Carolin Crawford
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- Опубликовано: 9 фев 2025
- Interstellar space is not truly a vacuum devoid of matter. Mixed into vast diffuse clouds of atomic gas are minute grains of silicate and carbonate materials known as 'dust', alongside complex molecules deep in the cold hearts of nebulae. We shall look at how we can detect and observe this tenuous material, through the processes by which dust scatters and absorbs visible light, and emits its own infrared glow. This interstellar matter is of fundamental importance to us all, as it is the reservoir from which all planets form... and any lifeforms living on those planets.
The transcript and downloadable versions of the lecture are available from the Gresham College website:
www.gresham.ac....
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She speaks so well makes it easy to understand and she doesnt dumb it way down either, I appreciate that.
What I really appreciate about her lectures is she gives us that facts and doesn't sensationalize or titillate with the 'there could be life' nonsense you see in every other documentary/talk about the universe.
Thank you Caroline. Your lectures are excellent. Not only do you have the requred knowledge but also the unique ability to communicate this knowledge. I listen to all of your lectures and look forward to more in the future. All the best.
Bernie Kraska .:
Dr. Crawford's lectures are real joy for an educated layman. Stuff I didn't know is linked effortlessly here to lots of stuff I *do* know... and she does it clearly without pedantry or jargon, in good humour without the slightest condescension.
I could get spoiled listening to lectures like this. :-)
This is another brilliant and concise lecture by Gresham college. I'm a MSc scientist at UoLiverpool and D.Phil at ABMS Swiss.
Been a while since i watched an astronomy/astrophysics video with such a interest! (mostly because there is rarely new content presented)
Very informative and easy to assimilate!
Thank you Proffesor Crawford!
Carolin Crawford in my new youtube favorite.
very nice video! this channel is a real enrichment to the public cyberspace!
Thank you. Brilliant lecture on a topic that is not discussed enough. Star dust is so fundamental to the creation of the contents of the cosmos.
Amazing lecture!
Spitzer has done incredible work on dust. Stupefying stuff.
Thank You. Great Lecture.
Very easy to listen to lectures! Are there any more of her new lectures anywhere?
Astronomy gold. Thank God for Carolin Crawford. Er, wait, what?
Professore straordinario
Funny to think that when you look at objects in space - like planetary nebula - how they look like they are static and aren't moving. In actuality, the gas and dust you see are probably moving out from the central star at thousand kilometers per second. It's like an explosion that's frozen in space-time...
House hold dust is star dust. The entire solar system is star dust. The atoms comprising any human body were once spread out across millions of cubic kilometers of space.
Fascinating stuff . I'm a sound guy and the mic/pa feedback has distracted from the lecture. Can no one hear this ? Just saying..
Fix the sound please!
sunrise ,, nooooo lol but great :)
Star dust doesn't clump together. The German's tried an experiment with silicate dust in space and all they could get were dust bunnies.
The US government sends a satellite up to collect "astro stuff", and the satellite falls back into the desert? Where have I heard that before???? ;)
Jeezus the feedback is horrendous. Fire your sound man this is unwatchable!
i'm into positive feedback
Sadly a large proportion of her lectures are ruined because of crap audio. Either a. Turn the gain down b. Move the mike or speakers c. Notch out the critical frequency where the phase shift is just right to cause feedback d. Add a frequency shifter to move the audio spectrum slightly e. Get someone in who knows what they are doing. If I were her I would refuse to continue to work with amateurs.