John Mather: From the Big Bang to Searching for Life
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- Опубликовано: 15 июн 2022
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John Mather is an astrophysicist at NASA who has been involved in important space missions to probe our fundamental understanding of the Universe for over four decades. He helped lead the design and deployment of the Cosmic Background Explorer Satellite (COBE), which launched in 1989 to probe the cosmic microwave background radiation from the Big Bang with a precision that could not be obtained from terrestrial experiments because of the absorption of radiation by the atmosphere. The experiments on COBE, and its successor missions WMAP and PLANCK, literally have turned cosmology from an art to a science, allowing the precise measurement of cosmological observables that previously were either not measured at all or only measured to within a factor of two. This has led to a golden age of cosmology, where theories of the early universe can now be compared directly to observation.
John directed the building of the Far Infrared Absolute Spectrophotometer (FIRAS) on COBE which was able to show that the cosmic microwave background radiation was indeed an almost perfect ‘black body’ spectrum associated with a very well-defined temperature of the Universe at a time of about 300,000 years after the big bang. Indeed, no terrestrial experiment has ever produced such an accurate black body spectrum, which was one of the fundamental predictions that helped develop quantum mechanics early in the 20th century.
For his work on COBE, John shared the Nobel Prize with George Smoot. But John didn’t rest on his laurels, for several decades after COBE John helped lead the design and development of the James Webb Space Telescope, which recently launched and will probe both the very early universe and also extrasolar planets, possibly helping us discover evidence for life elsewhere in the Universe.
John and Lawrence talked about his origins in science, the science he has accomplished, and what his future plans are in a discussion that will help provide a valuable perspective for anyone on the current status of cosmology and astrophysics, as well as what we might learn in the future.
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Thank you for your support!
The Origins Podcast, a production of The Origins Project Foundation, features in-depth conversations with some of the most interesting people in the world about the issues that impact all of us in the 21st century. Host, theoretical physicist, lecturer, and author, Lawrence M. Krauss, will be joined by guests from a wide range of fields, including science, the arts, and journalism. The topics discussed on The Origins Podcast reflect the full range of the human experience - exploring science and culture in a way that seeks to entertain, educate, and inspire.
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Lawrence’s enthusiasm is contagious.
I really really enjoyed this. Thank you.
Dr Krauss, I met you at Reason Rally several years ago and you’re still awesome! Keep providing great content!
Lucky!
I really messed up as a youngster.
But this fine gentleman has inspired me.
At 57 I finally understand what a radian is compared to a degree.
My latest mission is to understand negative and positive numbers 0 - (-3) =3
You my laugh but it made no sense to me so I just laid those bricks.
I shall learn how to use a vintage theodolite and enjoy it.
Thank you Lawrence.
I have become a patron on this channel it's only a small amount each month and it feels positive.
Dear Dr. Krauss,
I love how you never dumb down anything in science.
No matter how complex something is: people can and may look up any information and explanation online from a credible source regarding any topic in science.
Even wikipedia puts its sources on footnotes. References for certain books to buy if you want to study the profound understanding of certain fields in science in general.
We don't live in the 20th century anymore. Some humans do, but that's how it is for now.
The love for science emanates from these two guys and is so contagious.
:)
Love these interviews 🖤
You're doing a great job Mr. Krauss with all your videos and everything...I believe you will be long remembered by your contributions to science, the evolution of scientific thinking and history of science through a number of future generations. Welldone, congratulations and thank you.
Dr Krauss for the record. 👍
Yes!
Amazing! Thank you for taking the time to explain this!
1:46:40 - 1:46:59 watch that time segment at a playback speed of 0.5x and it sounds like John and Lawrence are closing down the bar while discussing planet Pluto.
Gold
Platinum
Amazing discussion. My PhD was using pulse lasers to generate time-resolve Raman scattering; of course we could do time-resolved fluorescence, absorption, Raleigh Scattering and obtain the polarization data. The collaborations were also amazing (Cal Tech, Bell Labs, Sandia, and some international groups), and there were also a fair number of post-doc opportunities at the time (late 80s). We had Ring-sides seats for the dismantling of Bell Labs, and so many other research labs in for-profits companies. Also the drying up of gov/university research funding on smaller projects...everything was a f - ing Grand Challenge, and of course military research have to grow. Followed by a dearth of permanent research jobs, esp. for competent white guys, with the birth of the DIE religion. It's nice to see the Webb and other such project "off the ground" but I wonder at the missed opportunities due to lack of funding for diverse idea, and how all the social engineering will work out. Anyway, thanks for putting this up, I'm going back to my Chinese language studies...
Brilliant, in-depth discussion between 2 of my favourite (living) scientists. Thank you both very much for this!
Great interview! I want to hear more of John Mather, and less of explanations for the ordinary people - they can look up the definitions of terminology. ;)
1:56 Had a flood of ideas for experiments, if only they had a military budget,
Thank you, professor Krauss! You are my favourite physicist! I love listening to your conversations.
Why does Lawrence completely agree with something by saying: "yeah, no"? I think he sometimes sounds adversarial when he does not actually mean to.
Lawrence, please consider have on Radley Balko. He has debunked Heather Macdonald thoroughly.
Love all these science channels, but a critique if I may. I am 1 hour in and you guys still seem to mostly just be talking about each other. I would like to listen about what the title is about.
The channel is called The Origins Podcast lol
Thank you so much John and Lawrence, what an inspiring conversation, we've so much potential to discover new knowledge about our universe, which we perhaps take that knowledge and benefit from it too help all of us on this rock. Sounds like the work that they are doing on AXIOM project could be of benefit to John's sunflower investigation. Self assembly of habitats in space, by sending up stacks on a falcon 9 rocket that then self assemble once they are in orbit.
All this hope and hoopla aside, if one reads Carl Sagan's, A Pale Blue Dot, one knows that there is no life out there, not at least some place we can get to.
Also we have no technology to go beyond the close by planets at best. The Voyager 1 and 2 have travelled millions and millions of miles, not having encountered one living blip.
Here sit two institutional geezers, inside an echo chamber, talking about things which were well known in 1990.
21:30 TWO REASON WHY WE DO ANYTHING IN LIFE... Because we want to and for the ladies... MY DUDE JOHN MATHER VAMOS!!!
Interesting that spirituality/morality wasn’t mentioned once.
Yay, well said, Lawrence Krauss, Pluto is a planet. It's as simple as that, it's spherical, thus it is a planet. There is no intrinsic difference and only a matter of mass between objects from dust grains to blackholes. But it's functional to call something a planet as soon as it has enough mass to become spherical and rotates a star, since it behaves differently than a star or blackhole. And calling it a moon when it rotates a planet. Nothing is static in the universe, and it's not a problem to call something a moon because it rotates a planet in our lifetime, as long as you keep open to the possibility that it could have been born as a planet, or will change again in the future f.i. when our sun and a star approach each other nearby and disturb the temporary equilibrium again.
I think the reason why Pluto was declassified as a major planet is because we now know there are several similar objects in the same (Kuiper belt) area of our solar system. It still is a planet, but is a minor planet as are the others, at least one of which is probably larger than Pluto.
All this hope and hoopla aside, if one reads Carl Sagan's, A Pale Blue Dot, one knows that there is no life out there, not at least some place we can get to.
Also we have no technology to go beyond the close by planets at best. The Voyager 1 and 2 have travelled millions and millions of miles, not having encountered one living blip.
Here sit two institutional geezers, inside an echo chamber, talking about things which were well known in 1990.
I believe there is life out there. Just to much damn space for there not to be, its very silly and ignorant to be of the opinion that we here are the "only ones" i bet there is "something" out there which we cannot even comprehend or even theorize about.
It was only about one hundred and twenty years ago that we first flew a powered aircraft and technology is evolving faster and faster. We've no idea what technology there'll be in the next hundred years. ✌️
Professor Klauss!
I have sent to you my hypothesis about the only theory that can answer the question Why There is Anything Rather than Nothing... I did it on fb via messenger. There I explained why the Big Bang theory is impossible. It is based on very specific facts. Could you, please, address those arguments in your discussions?
I've a feeling Professor 'Klauss' might have difficulty opening his FB messenger Yuri.
@@Mrcatcherye
Why is that? Looked like he actually looked at what I sent.
can you send it to me to have a read of? I'm interested
@@scotland_from_up_high7440
I need your email for that. As I said in previous comment, find me on fb and send your email to my Messanger.
!r
I love your guests, but please try not to talk over them. Let them speak.
Prof Krauss is a scientist but when he debates about God/religion etc then he really makes himself look so stupid !! Also let me remind Krauss that Nothing is Nothing !!