[Q&A+] Universe Inside a Black Hole, Consequences of JWST Failure, State of SETI | Q&A 310
What consequences would Astronomy face if JWST had failed? Does SETI still do good work? Does our Universe live inside of a giant black hole? And in the free addition of [Q&A+] on Patreon, can there be an experiment that would provide proof of alien life? Answering all these questions and more in this Q&A show.
Watch the video here (with no ads) or on YouTube: https://youtu.be/j6shBJIuUKY
Here's a link to the full, unedited live stream: https://youtube.com/live/L60da0NME-o
Comments (17)
Animals on Earth have a lot of slop in our diurnal cycle -- basically, it's designed to be flexible as the seasons change, and the daily light/dark schedule constantly resets our internal clocks. So adjusting to a 25 hour day should be no problem.
Hey Fraser, thank you for your content! I'm just wondering are the Raw live shows available here to us Patrons? I ask because it is impossible to always catch it live on youtube and I really enjoy them but apparently it's not possible unless I watch live.
Good video! and loved the + content.
Thanks, it's really starting to feel like a much more vibrant and positive community here. It's a stark difference between how things are trending over on YouTube.
If the "universe" is in a black hole, and here are black holes in our universe... reminds me of a quote: Upon the back of every dog God put a flea to bite em, and on that flea a smaller flea, and so ad infinitum...
Technically, since light cannot escape the universe, it *IS* a de-facto black hole.
Considering that the universe was once a singularity, how can it not be a black hole
In my mind, I can see at least two reasons (there could be more) that we can't conclude that it is a black hole and that the hypothesis of the universe is a black hole is still quite a feeble hypothesis : 1- it would imply that all singularities are the signature of a black hole : this is quite a jump. Why couldn't there be singularities that are not black holes? I'm sure that we can find thousands of solutions to the Eisntein equation of general relativity producing singularities if we look for them 2- it implies there is a singularity inside a black hole and in the begining of the universe : we don't know that. Actually it's probably not true. The solutions of the Eisntein equation gives this result. But when we come too close to the singularity, we have to take into account quantum physics and what happens beyond that is still a very tough mystery that generations of physicists haven't managed to begin to solve yet. One day, if we manage to solve this mystery of a unified theory of GR and quantum physics, perhaps we could have more solid hypothesis about what is really the big bang and what is at the center of a black hole.
SETI has also made discoveries -- that may not have been made -- as a "side effect" of their primary mission.
There was a citizen science study about classifying galaxies. The investigators found an asymmetry in the responses about galaxy rotations -- statistically more spiral galaxies were reported to spin clockwise than expected. To investigate whether this was a perception problem, they re-ran the study with all of the photos mirror-imaged. The result again was that statistically more galaxies were rotating clockwise than expected. So they concluded that the asymmetry was a human perceptual bias. I wonder if that effect was accounted for in the "Universe inside a black hole" study?
This episode completely gripped my daughter’s attention (and mine!), so expect many of the questions that I can’t answer to be passed along here. Also, well done - great episode.
It's kind of an interesting coincidence that the average human circadian cycle is closer to the diurnal tidal cycle (about 24h50m) than to the solar diurnal cycle (24h). And that the Martian diurnal cycle is almost the same as the tidal diurnal cycle...
I had the same thought and came here to write what you wrote but you did a much better job than I would have. So I just upvoted.
History of SETI should have mentioned SETI@home -- quite a popular crowdsourced effort and still going on -- tho based at UCB and not directly part of the Institute
I’m very happy you’re making it.
Enjoyed the video. Thank you.
You should study what’s known of chronobiology bc the natural period of humans is NOT 24 hours. If you put people in a uniformly illuminated environment, humans will develop a cycle that is 25 hours. So Martian days will not upset humans.