My favorite podcast in which Dr. Katie Mack makes John Green question time itself about 10 minutes in, then spends the next 20 minutes trying to avert a complete existential crisis, followed by John Green's amazing Policygenius life insurance ad, then a discussion of dark energy. I love every minute.
@ilessthan3bees
3 ай бұрын
My favorite podcast in which an astrophysicist tries to explain the mysteries of the origin of everything while an author tries to avoid existential terror by criticizing the silly names in cosmology.
@Anonymous-m9f9j
3 ай бұрын
“What even is time then?” *manic giggling* I friggin love this show omg 😂😂
@dunkybones
3 ай бұрын
These two bounce off each other really well. Katie Mack is a fantastic educator on highly complex topics. And I enjoy the wonderful simplicity of the animation, it compliments the jocular banter, the displayed transcription keeps my mind from wandering off,
@jenloves4260
3 ай бұрын
7 episodes in and I still can’t get enough!
@sashakindel3600
3 ай бұрын
I like watching videos of video games I like being played by people who hadn't played them before. This podcast is like that but substituting learning about astrophysics for playing video games.
@ParadoxProblems
3 ай бұрын
The laugh in John's voice as he says "Life Insurance" at 30:20 makes me happy
@platinummyrr
3 ай бұрын
Every time 😊
@mrpearson1230
3 ай бұрын
I have a request; we need 100 episodes! Please & thankyou!
@juliegolick
2 ай бұрын
I love how this podcast tells us the questions that astrophysicists are ACTUALLY working on (how do you calculate the expansion rate of the universe, and therefore how do you figure out how old certain events in the universe were), compared to what certain pundits THINK are unexplained but are actually very well explained (the meme-able "tide goes in, tide goes out, never a miscommunication", for example).
@davidlinstrand5913
2 ай бұрын
In my view, this is the best popular cosmology series since Carl Sagan's Cosmos. Well done.
@Neveko
3 ай бұрын
"We just have complicated clocks that we don't understand." I wasn't expecting to laugh at this podcast, but I love it so much
@tarabates7088
2 ай бұрын
That was so good!
@Chomuggaacapri
3 ай бұрын
The banter in this episode is everything to me
@carmillachoate
3 ай бұрын
For the sake of John's anxiety, I'm glad Dr. Mack didn't say "the crisis in cosmology"
@bodhimofo
2 ай бұрын
I just got to the skillful use of "Hubble Tension." I was both amused and slightly let down. I had popcorn ready, waiting, for John's response "Wait?! Crisis in Cosmology? That's like EVERYTHING." Followed by a Policy Genious ad.
@bisin87
3 ай бұрын
I've watched just about everything crashcourse over the years and this is by far my favorite series!
@Finvaara
3 ай бұрын
This is still literally the best podcast I listen to and I have no need to qualify that statement.
@rukbat3
2 ай бұрын
“The gift of light.” What a great phrase!
@budreau
3 ай бұрын
"It's high noon at the edge of the universe!" That was the catch phrase in the fake movie MetalStorm in the Ryan Gosling film Fall Guy.
@RenayEmond
3 ай бұрын
1:00:09 John, your addition of e.e. Cummings is one of the myriad of reasons these Conversations are 💣💥BANGERS💯 THANK YOU ALL for making such AWESOME Content ❤🖖DFTBA🖖
@_maybe13
3 ай бұрын
what another fantastic episode in this fantastic series. Thanks for a little bit of poetry amongst the astrophysics, John
@Alice_Walker
3 ай бұрын
Thank you. I am loving these podcasts so so much! Wonderful, wild and weirdly heart-warming conversations ✨
@GregMcNeish
3 ай бұрын
I still can't help but smile every time I see "Katie Mack, astrophysicist; John Green, very curious"
@Billionth_Kevin
3 ай бұрын
While most of this is a "review" for me, I always love hearing the same information from a different perspective. What I really enjoyed was John's "personal perspective". His response to "dark energy is not separating things that are gravitationally bound"... "Good." perfect, lol
@Jackson09
2 ай бұрын
I completely agree, while I too know and understand the concepts discussed in these universe videos, it is Never a bad thing to hear the same information from a different perspective...I don't who you are, but I do know if the rest of humanity could grasp the concept of "it's okay to listen to different perspectives" while realizing you don't have to believe or agree with any of them, your knowledge is expanded and you just become an overall better human... Thanks for the comment.
@KingZarathus
Ай бұрын
Dr. Mack is very good at explaining the same concept in a new slightly different way. Her explanation of the anthropic principle is probably the best, most concise I've come across.
@gabesnooks3549
3 ай бұрын
Posted 39 seconds before a road trip! Love it!
@EnergyAnn
3 ай бұрын
I too am in love with this series. I have no other science geeks around me so I'm closeted & this is such a treat. What's really fun is reading complexity theory & theories of consciousness in between episodes. 😉
@Alice_Walker
2 ай бұрын
I am also a covert geek in real life. I would love to hear who you enjoy listening to about theories of conciousness 🧠 ✨
@theredtreeman777
3 ай бұрын
“Little protons on the tide of empire” man that’s awesome.
@daniellegetz1931
Ай бұрын
‼️‼️
@geoffreymartin6363
3 ай бұрын
This is your best yet guys, hella entertaining. Loved all the names, and the metaphor of dark energy being a cosmic wind was great
@alsorensen2484
3 ай бұрын
"So does that lead us to Dark Energy?" "....yeeees >:3" She sounded SO happy! XD
@danieldavid3945
3 ай бұрын
39:18
@CPaulCounts
3 ай бұрын
I love this series.
@osmia
3 ай бұрын
Thanks Dr Katie Mack
@frankwaterstheory
3 ай бұрын
I hope there'll be a book from these conversations. That would be awesome
@Alice_Walker
2 ай бұрын
Hi Frank. Dr Mack has a recent book called "The End of Everything: (Astrophysically Speaking)" I'm pretty sure that I remember John saying that he read & loved it and this podcast grew out of that. I haven't gotten around to starting it yet but looking forward to it 🤯
@jtnotmiller
3 ай бұрын
I love this series so much.
@code4chaosmobile
2 ай бұрын
I have absolutely fell in love with this Pods! love the format, pacing and yes even the anxiety! Thank you for your hard work!
@Davlavi
2 ай бұрын
Informative as always.
@sarahleonard7309
3 ай бұрын
So what I'm getting from this video is that if you are a little warped and a bit of a hot mess, you're just in tune with the galaxy.
@casasdomundo
3 ай бұрын
I LOVE THIS SERIES AND YOU SHOULD DO THIS VIDEOS FOREVER ❤❤❤❤
@UntoldRelic
3 ай бұрын
I think of time as a byproduct of motion. It helps me get through the day.
@tarabates7088
2 ай бұрын
Black holes, dark matter, and now dark energy... thank you and keep them coming!
@thomasjdurfee
3 ай бұрын
I love that you can always hear John smile when he delivers the reveal of the ad read.
@jangschoen1019
3 ай бұрын
Only John can link poetry into an astrophysics podcast.
@TatianaBoshenka
3 ай бұрын
God I love this series.
@casasdomundo
3 ай бұрын
Thank you so much!! I've bought Katie's book and I'm loving it!
@laurachapple6795
3 ай бұрын
John sounds so confused and disappointed in his "... oh," when Katie tells hi the universe is speeding up. Which, TBF, is probably exactly how Dr. Perlmutter felt, so he's in good company.
@jobriq5
3 ай бұрын
Can’t believe I didn’t see that Policygenius ad coming
@gomjabbar6246
3 ай бұрын
I suppose it makes sense that as you broaden the scope of your field of study, there's less that is strictly known. But between dark energy, dark matter, the proton having waaaay more energy than its constituent parts(a percentage suspiciously close to the ratio of dark matter to 'light' matter), and fine tuning, there's more known unknowns in cosmology than I previously understood.
@CliffSedge-nu5fv
3 ай бұрын
I can hear John's neurons tingling, and it is a beautiful sound.
@gabrielguy7250
3 ай бұрын
Things that are gravitationally bound stay gravitationally bound. GOOD
@Slavik-qh2xo
2 ай бұрын
Katie had a great time 😊
@Jackson09
2 ай бұрын
This is one of those videos I come across and say to myself....this is what KZitem was meant for...take it for what you will...
@mckennaenloe4625
3 ай бұрын
It would be so cool if they did a Q&A podcast
@MrCoophi
3 ай бұрын
"protons on the tide of empire" I had to check that wasn't an Asimov quote 😅
@scottymoondogjakubin4766
3 ай бұрын
Gravitational waves !
@vcjester
Ай бұрын
Been thinking about this all day. As the universe expands, the density of matter per space lessens, which also lowers the density of gravity. So time would appear to move faster as the universe expands. Could this effect the observations we have of the expansion acceleration? (I could be barking up the wrong tree)
@kobynmalone2134
3 ай бұрын
So everything in the universe expands, and the rates of expansion grow at some rate with the passage of energy?
@shadebug
3 ай бұрын
“We’re protons on the tide of empire” I see, because particles are waves
@unpossibly
3 ай бұрын
Take a shot everytime John gets anxious.
@EnergyAnn
3 ай бұрын
What would the traveling speed need to be of a ball launched into space for it to stay in one spot while the universe expands away from it in all directions?
@AndrewTBP
3 ай бұрын
There’s no “in one spot” anywhere. So there’s no need to launch it into space. The universe expands in all directions from every point in the universe.
@Slippy_Antoine
3 ай бұрын
god... this is just... oh god, no words for
@HogdahlThomas
3 ай бұрын
Isn't the reason that lambda is uncomfortable but c isn't because lambda is derived and c is observed?
@NathanaelNewton
3 ай бұрын
38:28 'Ohh...: you can totally here the 😟😨😰
@cedricrobertson2893
2 ай бұрын
What I get from this podcast is that dr Mack is a timetraveler with troubles keeping whays recent and ancient straight
@danieldavid3945
3 ай бұрын
Do you take the revolution of the earth and the location of observation into consideration when you say something has been red shifted?
@romajimamulo
3 ай бұрын
Technically that would impact it but extremely barely, due to the scale of how fast light moves and how far away the things are
@AndrewTBP
3 ай бұрын
No, because those velocities are known and can be allowed for. Also, these redshifts are measured by space telescopes lik JWST and the rotation of the Earth is irrelevant.
@hayleybuley3533
3 ай бұрын
Wait, are all distances not objective? Or is it beyond our solar system or galaxy where distances are no longer objective?
@toddmatteson183
3 ай бұрын
The distance, as in the separation in spacetime of pairs of events, is very real but we have no means of directly measuring it. Direct measurement is only possible on the scale of the earth. At the scale of the solar system and our local galactic neighborhood, cosmological effects are broadly negligible so for things planet size or earth diameter distance away all the way up to that scale, indirect measurement techniques all more or less agree on distances, whether it's parallax angle or observed brightness of standard candles or mass-tempered kinematics or whatever. Beyond that scale, what distance you measure depends more and more on what method you use, plus it becomes increasingly ambiguous what exactly you mean by something being “x units far away” and how you interpret that measurement is also complicated by which cosmological model you're using. That's how I understand it to be variable.
@dennishughes721
3 ай бұрын
Distance
@jeffmacdonald9863
3 ай бұрын
If the universe is expanding and the amount of dark energy in every cubic meter is constant, then the amount of dark energy is constantly growing.
@HugoCervantes1
3 ай бұрын
❤❤❤
@LordBrittish
3 ай бұрын
Well, not all stars have the same religion or political opinions, but I hear that some of them are really down to earth! *What keeps them apart though? Cheating partners. Divorce. Restraining orders. Sometimes stars just drift apart. **also, Cosmic Noon sounds like a new DLC for the game Borderlands.
@OlliWilkman
3 ай бұрын
"Tension" like the Hubble tension is sometimes used in physics for a situation where different ways of measuring the same thing disagree. They are said to be "in tension" with each other, and I guess these days the whole situation is also "a tension".
@joewalsh4713
Ай бұрын
Dark Energy IS the cause of the accelerating expansion of the universe. We just don't know what the hell it really is.
@terricox5331
3 ай бұрын
Dudes hilarious 😂
@arlenestanton9955
3 ай бұрын
You are thinking of ‘high noon’. I think it was cowboys movie
@XKathXgames
3 ай бұрын
6 Billions years = Very recently in Universal time. Einstein = Very old Human time Gotta keep it separate in my head that way or my brain will blue screen.
@blsil7863
3 ай бұрын
Wait. So the force is real and we just call it dark energy? “luminous beings are we, not this crude matter“ -yoda
@CorwynGC
3 ай бұрын
So you are saying that DARK energy is somehow LUMINOUS?
@TheTrumanZoo
3 ай бұрын
Better question is, what is keeping all the relative angles between them the exact same over time, E.g. All night, All year....
@edgfwevwefedvreafv4974
3 ай бұрын
I don't know if I understand your question correctly or not but is this not trivial. If you scale up the sides of a triangle, the angles of that triangle remain constant. The speed of light is quite slow so even if the galaxies' velocities (not including the velocity due to expansion) were close to it, it would still take a lot of time for the relative angles to change.
@CFCbluemofia
3 ай бұрын
The vastness of space. In fact, because the ancients didn't realize how vast space was, that was why it was concluded that the Earth was at the center of the universe, because if the Earth actually moved, we would see parallax from the angles to the stars changing in different seasons, much like your eyes see things from slightly different angles. Now that we have much better telescopes than the human eyeball, we can in fact see that the angles shift slightly with the seasons. With the GAIA satellite, this also improved our sensitivity compared to before, and we are able to use the angle shifts to much more accurately measure their distances than before.
@CliffSedge-nu5fv
3 ай бұрын
Angles between what? Stars? Galaxies?
@thekaxmax
3 ай бұрын
They aren't. You can't see the change cos it's slow, that's all.
@Thorizan
3 ай бұрын
I am the CMB!
@ajs1998
3 ай бұрын
"maybe the real wonder is what's keeping the stars apart is love or whatever" lol
@Idkman1997
3 ай бұрын
Just for the record, Einstein died BEFORE John was born, like two decades before.
@flubohooligan
3 ай бұрын
Haven’t y’all ever thought that maybe the universe isn’t expanding but rather everything in it is shrinking?
@hyacinthpixie8054
3 ай бұрын
Wow, I am so early, I never am.
@danieldavid3945
3 ай бұрын
Whatever you see up there NOW has already happened at diffrent time periods, so it dosen't sound right when you say "this is how something looks right now".
Пікірлер: 102