Search FQXi

If you are aware of an interesting new academic paper (that has been published in a peer-reviewed journal or has appeared on the arXiv), a conference talk (at an official professional scientific meeting), an external blog post (by a professional scientist) or a news item (in the mainstream news media), which you think might make an interesting topic for an FQXi blog post, then please contact us at with a link to the original source and a sentence about why you think that the work is worthy of discussion. Please note that we receive many such suggestions and while we endeavour to respond to them, we may not be able to reply to all suggestions.

Please also note that we do not accept unsolicited posts and we cannot review, or open new threads for, unsolicited articles or papers. Requests to review or post such materials will not be answered. If you have your own novel physics theory or model, which you would like to post for further discussion among then FQXi community, then please add them directly to the "Alternative Models of Reality" thread, or to the "Alternative Models of Cosmology" thread. Thank you.

Forum Home
Terms of Use

Order posts by:
 chronological order
 most recent first

Posts by the blogger are highlighted in orange; posts by FQXi Members are highlighted in blue.

By using the FQXi Forum, you acknowledge reading and agree to abide by the Terms of Use

 RSS feed | RSS help

Amy Morris: on 11/15/19 at 6:18am UTC, wrote Amazon prime Phone Number Amazon Prime Phone Number 1-833-260-7367...

julia greenwood: on 9/2/19 at 6:50am UTC, wrote You can easily deposit or withdraw funds from your Coinbase account but in...

amy jones: on 8/22/19 at 10:59am UTC, wrote Google Pay provides its customers with a wide range of Google Pay Customer...

amy jones: on 8/9/19 at 6:36am UTC, wrote We understand the questions you have in your mind and we intend to answer...

isabell ella: on 7/18/19 at 8:15am UTC, wrote If you are facing Cash app related problems and want to get support...

isabell ella: on 7/12/19 at 10:21am UTC, wrote Where To Get Amazon support number 24/7? Here, at available, we offer you...

Wisteria Technologies: on 6/19/19 at 11:12am UTC, wrote Looking For SEO Services in Noida? Wisteria Technologies is one of the Top...

Kenneth Leitner: on 6/17/19 at 3:23am UTC, wrote This is a great contest with good quality. My young brother join the test...


Jason Wolfe: "I wonder why there is no interpretation of QM that says the wave function..." in Schrödinger’s Zombie:...

Georgina Woodward: "Re.macroscopic objectivity: How an outcome is to be called, the method..." in Schrödinger’s Zombie:...

Jason Wolfe: "Joe Fisher, I'm not sure reality is sensible. But the NDE/ghost stuff is..." in First Things First: The...

Joe Fisher: "Today’s Closer To Truth Facebook page contained this peculiar piece of..." in First Things First: The...

Jahangir kt: "A great website with interesting and unique material what else would you..." in Our Place in the...

Steve Dufourny: "I am going to tell you an important thing about the aethers. I thought that..." in Alternative Models of...

halim sutarmaja: "dewapoker hadir untuk semua pecinta game poker dengan teknologi terbaru dan..." in New Nuclear "Magic...

Jason Wolfe: "As for religious fundamentalists, I would rather deal with them, then with..." in More on agency from the...

click titles to read articles

First Things First: The Physics of Causality
Why do we remember the past and not the future? Untangling the connections between cause and effect, choice, and entropy.

Can Time Be Saved From Physics?
Philosophers, physicists and neuroscientists discuss how our sense of time’s flow might arise through our interactions with external stimuli—despite suggestions from Einstein's relativity that our perception of the passage of time is an illusion.

A devilish new framework of thermodynamics that focuses on how we observe information could help illuminate our understanding of probability and rewrite quantum theory.

Gravity's Residue
An unusual approach to unifying the laws of physics could solve Hawking's black-hole information paradox—and its predicted gravitational "memory effect" could be picked up by LIGO.

Could Mind Forge the Universe?
Objective reality, and the laws of physics themselves, emerge from our observations, according to a new framework that turns what we think of as fundamental on its head.

November 20, 2019

CATEGORY: Blog [back]
TOPIC: Cosmic Dawn, Parallel Observers, and a Science Hostel in Maui: New Podcast [refresh]
Bookmark and Share
Login or create account to post reply or comment.

FQXi Administrator Zeeya Merali wrote on Mar. 21, 2018 @ 20:04 GMT
EDGES antenna, by Suzyj, Wikicommons
This month’s podcast features the exciting discovery of signs of the first stars made by astronomers using the EDGES experiment, in Western Australia (right), published in Nature, in February. It’s long been predicted that they should see such an indirect signal, which they picked up as a dip in the intensity of radiation in the cosmic microwave background (the afterglow of the big bang). But while this signal was where they thought it would be, and confirmed when they thought the first stars appeared — some 180 million years after the big bang — the detection raised new puzzles. The signal was far stronger than had been predicted. So, I spoke with cosmologist Rennan Barkana, of Tel Aviv University in Israel, who published a companion paper in the same edition of Nature, offering a possible solution: the boosted signal could be caused by an unexpected interaction with dark matter, in the early universe.

Free Podcast

Remembering Stephen Hawking; light from the first stars in the universe, with Rennan Barkana; our place in the multiverse, with Eugene Lim; & setting up a science hostel in Maui, with Garrett Lisi.


Go to full podcast

Next, reporter Sophie Hebden chatted to cosmologist Eugene Lim, of King’s College London, about what we may be able to infer about observers in parallel universes. Lim, and his colleague Richard Easther, at the University of Auckland, are examining the possibility that we live in a multiverse of neighbouring cosmoses that each have different physical laws. But how likely is it that sentient observers will arise in those regions? What are the minimal set of physical properties needed for such observers to evolve? And what might our multiversal neighbours be able to measure? Answering such questions might help explain why our universe has the peculiar rules that it does. (You can read more about Lim and Easther’s work in Sophie's article, "Our Place in the Multiverse.")

And, if you're wondering what we do when we're not podcasting, the answer, for Brendan Foster at least, is he enjoys relaxing in Maui. But on this holiday, he took some time to meet with theoretical physicist Garrett Lisi, who has opened a hostel for scientists to visit and spend time working. Listen now to hear Brendan’s verdict on whether staying in such an idyllic location can be productive for research.

Finally, we've been away for a while. In the meantime, we saw the sad passing of two giants of theoretical physics, Joe Polchinski and Stephen Hawking. The latter died after we recorded the main edition, but we've added a few words to commemorate these huge losses. Both shall be missed.

Bookmark and Share
this post has been edited by the forum administrator

report post as inappropriate

Steve Dufourny wrote on Mar. 22, 2018 @ 21:28 GMT
Hi Zeeya,

I say me if they exist these multiverses with different laws that after all we return still at this uniquness and an universal main sphere and Inside we have all these universe, sphères with their cosmological and quantum sphères but with different laws, it becomes intriguing all this ...

Best Regards

Bookmark and Share
report post as inappropriate

Steve Agnew wrote on Mar. 27, 2018 @ 04:12 GMT
This is a great experiment and result and so hopefully will spur on further investigations on the spectra of the early universe. The new Webb telescope will of course greatly contribute greatly to our knowledge of the young universe in a much more significant way.

Eventually, the gravity wave sensors of future missions will ultimately reveal the true nature of the early universe and allow us to finally know what has so far been hidden from science.

This measurement of when stars first appear is really important for creation. Without creation, nothing would exist and so the cmb creation is from where we all come. Getting the first stars right will help with the details but the cmb creation is still the bee's knees...

Bookmark and Share
report post as inappropriate

Joe Fisher wrote on Mar. 27, 2018 @ 15:31 GMT
I am ever so glad that the alert astronomers have actually detected (finite) signs of light from the first stars in the universe. Of course, it would have been better had they spotted actual light from the first stars, but the fact that they were able to isolate the first (finite) stars (without confusing them with the second set of (finite) stars) is yet another sparkling example of scientific capability at its most profound.

Joe Fisher

Bookmark and Share
report post as inappropriate

Joe Fisher wrote on Mar. 28, 2018 @ 20:35 GMT
These astute Australian astronomers claim to know that although the stars we see with our naked eyes emit light and radio waves, their radio telescope has detected a different kind of radio wave emanating from some sort of very cold gas which existed before it started forming into the first finite stars. But if the extremely cold gas formed the finite first stars, how on earth is it still emitting the special radio wave solely to the Australian radio telescope? Why could not the ultra freezing area be about to form into a spanking brand new set of stars?

Joe Fisher, Realist

Bookmark and Share
report post as inappropriate

Login or create account to post reply or comment.

Please enter your e-mail address:
Note: Joining the FQXi mailing list does not give you a login account or constitute membership in the organization.