TEDxCaltech – Sean Carroll
Sean Carroll is a theoretical physicist at Caltech. He received his Ph.D. in 1993 from Harvard University, and has previously worked at MIT, the Institute for Theoretical Physics at the University of California, Santa Barbara, and the University of Chicago. His research ranges over a number of topics in theoretical physics, focusing on cosmology, particle physics, and general relativity, with special emphasis on dark matter, dark energy, and the origin of the universe. He is the author of “From Eternity to Here,” a popular book on cosmology and the arrow of time, and of “Spacetime and Geometry,” a textbook on general relativity; has produced a set of introductory lectures for The Teaching Company entitled “Dark Matter and Dark Energy: The Dark Side of the Universe;” and is a co-founder of the popular science blog Cosmic Variance, http://blogs.discovermagazine.com/cosmicvariance/.
About TEDx, x = independently organized event: In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized. (Subject to certain rules and regulations.)
On January 14, 2011, Caltech hosted TEDxCaltech, an exciting one-day event to honor Richard Feynman, Nobel Laureate, Caltech physics professor, iconoclast, visionary, and all-around “curious character.” Visit TEDxCaltech.com for more details.
Please use the comments to demonstrate your own ignorance, unfamiliarity with empirical data and lack of respect for scientific knowledge. Be sure to create straw men and argue against things I have neither said nor implied. If you could repeat previously discredited memes or steer the conversation into irrelevant, off topic discussions, it would be appreciated. Lastly, kindly forgo all civility in your discourse . . . you are, after all, anonymous.
This is a very interesting video.
If anyone wants to get some more easily digestible discussions
on cosmology I highly recommend watching some of the videos on
cosmology at the Khan Academy.
http://www.khanacademy.org
Again, thank you. And to think that Professor Carroll could explain the meaning of it all in 16 minutes. The real “thank you,” however, is for reminding us that there are people out there who are really trying to make sense out of existence and can translate their thoughts into language the rest of us can understand.
Thanks for that…
There’s an old book called ‘Star Maker’ by Olaf Stapledon written in the 30′s that is similar to the ‘preferred’ cosmology of the physicist above if I remember right:
http://en.wikipedia.org/wiki/Star_Maker
And tell everyone you know to give a 13 year old in your life a book of Ray Bradbury short stories to read over the summer!
The whole thing rests on the assumption that the doppler redshift of light from distant galaxies represents in total the recessional velocity of those galaxies. This is approaching a significant value of the speed of light if you buy this. Halton Arp and others do not buy into this theory. They have posited alternate possibilities such as “Quasars” being ejected objects from active galaxies with redshift values with periodicity and physical bridges of matter between the Quasar (supposedly at the edge of the observable universe) and an active galaxy much closer to the observer (us).