Can The Crisis in Cosmology Be SOLVED With Cosmic Voids?

Galactic superclusters are just the rims of cosmic void bubbles. Got it. Thanks for the mindscrew today.

Always find it fascinating how our little star system is in a little bubble of unusually empty space, off a minor arm filament, in a small galaxy cluster, part of a relatively small super cluster, in the centre of a massive void bubble. We're really out in the boonies

The PBS Spacetime/Dr Becky cinematic universe is for sure the most meta cinematic universe. More crossover events!

Just butting in to say that I love that you are now citing Dr Becky's vids - she does really good stuff - always worth a watch, and splendidly accessible. The bloopers normally seem to indicate how much caffeine Dr B had or had not taken :)

The hypothesis is that dark energy could just be a product of the voids is so amazing simple yet feels so obvious that I unironically want it to be true. It feels like the least outlandish or sci-fi solution, the Occam's razor.

I cannot believe how much time and expertise is requested to create videos like this, that are simultaneously simple and detailed. Just a huge thank, and congratulations.

Speaking as a layman, this is the most sensible proposition I’ve seen to explain (away) dark energy yet. Really, really neat - I am looking forward to following the development of this hypothesis.

That animation at 11:40 is so amazing. Just the idea of cosmic bubbles breaks my mind.

I love it when Dr. Becky gets a shout-out.

Unrelated to the episode but I just love hearing how the channel's catch-phrase gets worked into the end of each. Just brings a smile to my face. 😊

This is easily my favorite YouTube channel

As a science daydreamer I always wondered about the baselines of Time and Space in a region devoid of galaxies and the clusters. I thought it must be fascinating how the Universe acts when its empty of everything apart from light and neutrinos.

It's often a good sign when you see same mechanics at different scales : like the link between blackhole and whirlpools. It might be the case also for bubbles of water and cosmic void, but to be believable it should really be more thoroughly checked Thanks for the amazing vid for new year!!

wow, a channel with 3 million+ subs that doesn't make me lose faith in humanity.

This episode raises some interesting questions about how much can we really know about the distribution of matter in the universe, given multiple observational problems: (1) The Zone of Galactic Obscuration (We can't see parts of the universe due to gas and dust within the Milky Way, rendering some dim, distant objects undetectable); (2) Our methods of estimating distances get less reliable with distance--We ain't measuring, we're guessing, and the reliability of measures of distance, volume, and density becomes highly questionable beyond the Virgo Supercluster; (3) The limited value of CMB observations. We're sometimes pretending that the CMB gives us a "picture" of the very early universe, but about all that we can glean from CMB observation is that the distribution of matter and the temperature of the universe was once highly uniform.

I love that you linked Dr Becky! I have been following you both for years. Great to see cooperation not competition.

I speculated on this in a comment on an earlier episode of Space Time, calling for the observation across a void in comparison to along a cluster. But I didn't know we were smack dab in the middle of such a (relative, perhaps) void.

The only Cosmic Voids I know of are the ones in my life when PBS Space Time doesn't upload.

Dear whoever edits/does music for these, PLEASE make the outro quieter! I love listening to these before bed and the last 15 seconds is so much louder than the enter episode. THANK YOU! Sincerely, An overworked mom who just wants to peacefully learn and fall asleep to science

Wow, I knew Dr Becky was awesome, but this is a big endorsement! =D