Supernova VS Nova, Orientation of the Moon, Gravitational Lensing of the CMB | Q&A 254

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  • เผยแพร่เมื่อ 24 มิ.ย. 2024
  • Does gravitational lensing affect the CMB? Can the Great Attractor solve the Hubble tension? Why don't we put a Deep Space Network antenna in space? What's the difference between a nova and a supernova? Answering all these questions and more in this week's Q&A show.
    Kyle McCaslin
    / @kylemccaslin
    🦄 Support us on Patreon:
    / universetoday
    📚 Suggest books in the book club:
    / universe-today-book-club
    00:00 Start
    01:31 [Andoria] How does gravitational lensing affect the CMB?
    05:31 [Vulcan] What's the difference between a nova and a supernova?
    11:25 [Risa] Can the Great Attractor be the reason for the Hubble tension?
    13:55 [Aeturen] Orientation of the Moon in different places on Earth
    15:52 [Vendikar] Why not put the Deep Space Network in space?
    21:11 [Remus] Should we build a space station to travel to Mars?
    23:47 [Janus] Is there a limit for the periodic table elements?
    26:52 [Cait] What was my early life experience in Astronomy?
    30:54 [Betazed] What is the best thing to see from a southern latitude?
    33:38 [Cheleb] Why were stars in the early universe so much larger than stars today?
    37:56 [Nimbus] Would I go to Mars?
    40:13 [Belos] Do we know about moons orbiting other moons?
    📰 EMAIL NEWSLETTER
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  • วิทยาศาสตร์และเทคโนโลยี

ความคิดเห็น • 297

  • @charleslaurice
    @charleslaurice 2 หลายเดือนก่อน +29

    I’m 70 years old now days and live in deep poverty area in the southern Philippines. Thank you for playing your part in making the world a better place,you are so very kind natured and love to listen to you on the edge of my seat. God bless you young man 👍

    • @revmsj
      @revmsj 2 หลายเดือนก่อน +2

      Awesome!

  • @21palica
    @21palica 2 หลายเดือนก่อน +65

    Congratulations for 25 years of great work. Here's to another 25!

  • @10aDowningStreet
    @10aDowningStreet 2 หลายเดือนก่อน +18

    When I visited Australia from the US we went to a dark sky location to see the milky way (MINDBLOWING), but I was pointing out Orion to my GF and suddenly realised it was upside down, really blew my mind realising that, finally converted me from a flat earther (only kidding) but just rocked my world seeing that, may not sound amazing but seeing it IRL and realising my position on the planet was giving me this new perspective really put things in, err, perspective.

    • @chrisendacott8765
      @chrisendacott8765 2 หลายเดือนก่อน

      And your Upside-down to me is the only way I've ever seen it. Hope to be in the north one day to experience it the other way too.

  • @RichardClark13
    @RichardClark13 2 หลายเดือนก่อน +16

    Congratulations on doing what you do so well for 25 years. Good to go for another 25.

  • @thebogsofmordor7356
    @thebogsofmordor7356 2 หลายเดือนก่อน +8

    Congratulations on a quarter century Fraser & universe today team! You know the old saying "Bulls of a horn flock together!"

  • @realzachfluke1
    @realzachfluke1 2 หลายเดือนก่อน +20

    Happy 25th, Fraser. I hope I'm able to find that same kind of spark for myself one day, and I'm so glad you did. My life without Universe Today would've taken a totally different course, and I'm convinced it would've been a worse course, because that's just the quality of content we're talking about here. Here's to many more 🎈📡🔭

  • @itsmodsiw
    @itsmodsiw 2 หลายเดือนก่อน +3

    Congratulations for the 25 years of devotion. You're amazing.

  • @marcelkernfx
    @marcelkernfx 2 หลายเดือนก่อน +12

    Congratulations Fraser! You are doing a fantastic job. Please keep it coming. 👍

    • @jaxdragon1723
      @jaxdragon1723 2 หลายเดือนก่อน

      🎊🎉✨🎇🌛happy 25th Fras..🎆🧨⚡🌟⛅🌜⭐

  • @TheTommyTanya
    @TheTommyTanya 2 หลายเดือนก่อน +5

    Congratulations, and thank you for bringing the cosmos into focus for us all! Your dedication to this subject matter has made a huge contribution to my knowledge...and many many others I'm sure would attest the same thing! Seriously, thank you very much for what you do! You HAVE made a positive contribution to this world!! ❤❤

  • @josephmcphee9143
    @josephmcphee9143 2 หลายเดือนก่อน +4

    Happy anniversary. 25 years is a long time. Thanks for all you do

  • @moremindsbetter
    @moremindsbetter 2 หลายเดือนก่อน +4

    Huge congrats on the anniversary Fraser. Universe Today is amazing - thanks to you and the entire team for the entertainment and learning I get here

  • @kylemccaslin
    @kylemccaslin 2 หลายเดือนก่อน

    Hey Fraser! Thank you so much for the shout-out and for all that you do; Truly top tier science journalism. And Happy 25th Anniversary to Universe Today!

    • @frasercain
      @frasercain  2 หลายเดือนก่อน +1

      Thanks! And keep up the good work!

  • @markfrancis5164
    @markfrancis5164 2 หลายเดือนก่อน +1

    You are hilarious today Mr Universe.
    The equatorial crescent Moon will now always be a ‘The Balls of a horn’ moon.
    I spat my cuppa tea across the kitchen table and laughed so hard. Thank you, you made my day !

  • @scottjohnston2116
    @scottjohnston2116 2 หลายเดือนก่อน +3

    Congrats on 25 years!

  • @morfeusdream
    @morfeusdream 2 หลายเดือนก่อน +5

    Always love this channel.

  • @Space_Library
    @Space_Library 2 หลายเดือนก่อน

    Your enthusiasm for astronomy is contagious! From discussing potential Moon moons to the practicalities of space travel, this episode was both informative and inspiring. Can't wait for the next one!

  • @ztublackstaff
    @ztublackstaff 2 หลายเดือนก่อน +3

    Cait. Congrats on 25 years, and thanks for sharing your story of following your passion. :)

  • @rienkhoek4169
    @rienkhoek4169 2 หลายเดือนก่อน +2

    Great episode again Fraser! Congratulations on 25 years UT!

  • @user-pn4iz7ns1v
    @user-pn4iz7ns1v 2 หลายเดือนก่อน +2

    Fantastic achievement! Thank you so much for your work🎉

  • @ilessthan3bees
    @ilessthan3bees 2 หลายเดือนก่อน

    Happy anniversary! Universe today (and all you do) is a big part of why I love space. Here's to 25 more!

  • @camsy83
    @camsy83 2 หลายเดือนก่อน +2

    'Bulls of a horn' passed through my brain as an entirely normal phrase, and it's only when you corrected yourself that I realised 😂

  • @anthonygross226
    @anthonygross226 2 หลายเดือนก่อน +1

    Thank you and your team for 25 years of journalism excellence. Your hard work and dedication to the high quality standards of both science and journalism has given you a reputation in both communities as a trusted and reliable source of contemporary science and space stories. Congratulations, and thank you.

  • @booradley4237
    @booradley4237 2 หลายเดือนก่อน +2

    Congrats! My child is 25 years old... and so is yours

  • @12345.......
    @12345....... 2 หลายเดือนก่อน +2

    Southern hemisphere stargazing is on my bucket list

  • @coulie27
    @coulie27 2 หลายเดือนก่อน +4

    I've often wondered about moon moons myself 😅

  • @gary3808
    @gary3808 2 หลายเดือนก่อน

    Vendiker, 25 yrs of space journalism is amazing. Congratulations!

  • @runrin_
    @runrin_ 2 หลายเดือนก่อน

    Risa was my fav this week. Congrats on 25 years Fraser. Having Universe Today remain relevant through all the changes in how people learn and consume information is a true feat.

  • @universemaps
    @universemaps 2 หลายเดือนก่อน

    Happy 25 years of Universe Today, Fraser! 🎉

  • @FrancisFjordCupola
    @FrancisFjordCupola 2 หลายเดือนก่อน +1

    Congrats on the 25th birthday Universe Today!

  • @brettclarke8892
    @brettclarke8892 2 หลายเดือนก่อน +3

    Happy Anniversary. I like your channel.

  • @Noam-Bahar
    @Noam-Bahar 2 หลายเดือนก่อน +2

    Congrats Fraser you're incredible!!!!!!

  • @NovaDeb
    @NovaDeb 2 หลายเดือนก่อน +1

    Congratulations on your 25th anniversary of starting Universe Today.
    Today's episode is one of your very best for teaching us fundamental concepts. I learned so much. Thanks.😊

  • @NunoPereira.
    @NunoPereira. 2 หลายเดือนก่อน +1

    Congrats for unveiling the universe to the masses for such a long time, since the last millennia. Keep going far into the future.

  • @kevingrooms8727
    @kevingrooms8727 2 หลายเดือนก่อน +2

    Congrats on 25 years! Going strong!

  • @marvinmauldin4361
    @marvinmauldin4361 2 หลายเดือนก่อน +1

    The orientation of the crescent Moon changes even when you stay in the same place. There is a folk tale that drought is caused when the Moon "holds water," that is, looks like a bowl held horizontally. When the Moon bowl is tipped so the water can flow out, the rain will come.

  • @Squeeko639
    @Squeeko639 2 หลายเดือนก่อน +1

    You’ve been a blessing in this world for 25 years

  • @JohnSostrom
    @JohnSostrom 2 หลายเดือนก่อน

    When you were talking about what you can see in the southern hemisphere you left out the Great Southern Cross. The first time I saw it I was stationed on a US Guided Missile Frigate on our way to Australia. The size is amazing.
    I loved going out on the weather deck after midnight out at sea and watching the sky. Particularly in the Pacific Ocean, hundreds of miles from any land. On a clear calm night there is nothing like it❤❤❤

  • @revmsj
    @revmsj 2 หลายเดือนก่อน +1

    This was a great week! 👍🏾

  • @TheAces1979
    @TheAces1979 2 หลายเดือนก่อน +1

    Congratulations on a quarter century of excellence! Cheers mate!

  • @RoxasXaviar
    @RoxasXaviar หลายเดือนก่อน

    Little late to saying this but congrats on 25 years. Your content is stellar glad I found you earlier this year.

  • @user-kg4fr9jr7v
    @user-kg4fr9jr7v 2 หลายเดือนก่อน

    Congrats with such a significant anniversary. That was great, we liked it

  • @markfrancis5164
    @markfrancis5164 2 หลายเดือนก่อน

    Congratulations Fraser on your 25th anniversary! Wow, what an achievement! Fantastic!
    I began listening to you on the early iTunes podcast around 2002 I think. It’s when you did a weekly audio show with a lady astronomer and I remember I had over 200 episodes on my titanium Mac laptop- and I still have it on life support?!

  • @aurtisanminer2827
    @aurtisanminer2827 2 หลายเดือนก่อน

    0:32. Congrats!! I was 14 when you started. Glad you went this direction and stuck with it!

  • @frjoethesecond
    @frjoethesecond 2 หลายเดือนก่อน +1

    Andoria. Great question and great answer.

  • @thorstenkrug144
    @thorstenkrug144 2 หลายเดือนก่อน +2

    YAY !!! So good. May the next 25 years bring us all more awesome news. ❤Keep on rocking and break for nobody. 😊

  • @kyoteecasey
    @kyoteecasey 2 หลายเดือนก่อน +1

    Gratz on 25 years Fraser! Love your work mate

  • @markmcdougal1199
    @markmcdougal1199 2 หลายเดือนก่อน

    Congratulations, Fraser. Great job, thanks for all the excellent reporting.

  • @topquark22
    @topquark22 2 หลายเดือนก่อน +1

    Thank you Fraser for answering our questions, from stupid laypeople, in an understandable manner. Your pedagogy is exceptional.

  • @AubriGryphon
    @AubriGryphon 2 หลายเดือนก่อน

    During the 2012 Tulum cruise, I remember you mentioning the moon being in a different orientation because we were so far south and I was like, "Uh, I guess? A little?" Then I realized you were speaking mainly to people who didn't already live around 30N and the difference was much more significant to you. XD

  • @Roguescienceguy
    @Roguescienceguy 2 หลายเดือนก่อน +1

    Congrats Fraser
    And thank you to you and your team for all that you do

  • @bobhillier921
    @bobhillier921 2 หลายเดือนก่อน +1

    Thank you for 25 years

  • @ruphind8376
    @ruphind8376 2 หลายเดือนก่อน

    Wow congratulations 🎉 I’ve been watching you for over 23 yrs

  • @Dan-Simms
    @Dan-Simms 2 หลายเดือนก่อน

    Cait was the best question, cool to learn about your history and congratulations on 25 years since the website!

  • @tonywells6990
    @tonywells6990 2 หลายเดือนก่อน

    [Andoria] Best answer of the week.

  • @laurachapple6795
    @laurachapple6795 2 หลายเดือนก่อน +2

    From Ushaia, Argentina, I got to see the moon looking fully upside-down. I knew it would do that but it was still very weird to see.

  • @RectalRooter
    @RectalRooter 2 หลายเดือนก่อน +1

    Vendikar
    The StarTrek documentary series shows just how we drop subspace beacons all over the place for this purpose.

  • @aetoski8724
    @aetoski8724 2 หลายเดือนก่อน +1

    Congrats! You're the best out there!!

  • @richardreumerman5449
    @richardreumerman5449 2 หลายเดือนก่อน +1

    Congrats on your 25 year anniversary!

  • @DeannaGilbert616
    @DeannaGilbert616 2 หลายเดือนก่อน

    One of the highlights of a trip to Buenos Aires for me was seeing Alpha Centauri for the first time. I didn't even realize at first I was looking at it, until I saw a bright star, and then saw Crux and realized where I was looking. Ironically enough a few months before that I'd gone to Hawaii for the first time and it was pretty cool to see so much of Scorpio.

  • @benjaminbeard3736
    @benjaminbeard3736 2 หลายเดือนก่อน

    Ansonia: really good question!
    Great answer. Super detailed and thorough , as usual.

  • @parthhappy
    @parthhappy 2 หลายเดือนก่อน

    Great videos. I am now a regular consumer :) you are so knowledgeable and yet so humble. Huge respect for you ! Keep up the good work.

  • @DarlinDarable
    @DarlinDarable 2 หลายเดือนก่อน

    Congrats on your anniversary!

  • @hoppyrabbit1833
    @hoppyrabbit1833 2 หลายเดือนก่อน

    Is there any chance you could snag Nobel laureate George Smoot for an interview, especially for his work on COBE? Your interviews are outstanding! Congrats on 25 years!

  • @rayg5146
    @rayg5146 2 หลายเดือนก่อน +1

    You should do an anniversary show with the most exciting events over the past 25 years

  • @dontcare397
    @dontcare397 2 หลายเดือนก่อน

    thank you for your awesome show Frasier

  • @jaygarricktheflash
    @jaygarricktheflash 2 หลายเดือนก่อน +1

    Congrats on the amazing accomplishment

  • @savetheplantet5799
    @savetheplantet5799 2 หลายเดือนก่อน

    Congrats man!!!

  • @BrokenhornKT
    @BrokenhornKT 2 หลายเดือนก่อน +3

    ConGrats on 25 years!! Wow time fly's Fast and thank you for all your Great information.

  • @eamonia
    @eamonia 2 หลายเดือนก่อน

    I love the way my wife snores. It's so cute. Cute little snore. ❤️

  • @sergey9986
    @sergey9986 2 หลายเดือนก่อน +1

    Regarding Laniakea, we have a perfect reference frame - CMB. Our movement in relation to it is measured quite precisely. Without this correction, all measurements of the Hubble constant do not make sense.

  • @austinsapp5867
    @austinsapp5867 2 หลายเดือนก่อน

    Risa! Such a cool concept

  • @isitme1234
    @isitme1234 2 หลายเดือนก่อน

    Best videos on youtube by far.

  • @nardocallanta3039
    @nardocallanta3039 2 หลายเดือนก่อน

    Happy 25th! Wooooh Hoooh!

  • @sergivaschenko
    @sergivaschenko 2 หลายเดือนก่อน

    Thank you!

  • @elviscera4661
    @elviscera4661 2 หลายเดือนก่อน +2

    Aeturen
    One can never have too many flat-earth counter arguments.

  • @bbbenj
    @bbbenj 2 หลายเดือนก่อน +1

    Thanks a lot 👍

  • @gwenever7286
    @gwenever7286 2 หลายเดือนก่อน +1

    Congratulations on your sites Silver Jubilee!

  • @Dop3Dawg
    @Dop3Dawg 2 หลายเดือนก่อน +3

    Congratulations Fraser! Here's to 25 more years👍

  • @jeremyeharris
    @jeremyeharris 2 หลายเดือนก่อน

    Cait! Thanks for sharing your astronomy origin story :)

  • @recterbert
    @recterbert 2 หลายเดือนก่อน

    Congratulations Frasier! Been listening to you since Astronomy Cast when the iPod mini first come out lol.

  • @steveriese8338
    @steveriese8338 5 วันที่ผ่านมา

    Remus. Great program!

  • @araucaj7
    @araucaj7 2 หลายเดือนก่อน +1

    Congratulations 🎉❤,🙌

  • @DanBennett
    @DanBennett หลายเดือนก่อน

    Congrats on the 25th anniversary!

  • @user-ib4wf8sz9l
    @user-ib4wf8sz9l 2 หลายเดือนก่อน +1

    Congratulations

  • @GreenCurryiykyk
    @GreenCurryiykyk 2 หลายเดือนก่อน

    Omega Centauri can be seen from the northern hemisphere in May and June. I saw it from The San Luis Valley in southern Colorado around 38 degrees north. A dark unobstructed southern horizon (no clouds, trees, hills, mountains) is necessary.

  • @pewterhacker
    @pewterhacker 2 หลายเดือนก่อน

    Another great TH-cam channel is Graviton Media.

  • @MistSoalar
    @MistSoalar 2 หลายเดือนก่อน

    Aeturen. Never traveled to the other hemisphere, but never thought of it. Totally makes sense.

  • @isitme1234
    @isitme1234 2 หลายเดือนก่อน

    25 years??? Wow congratulations!!

  • @brucehansensc
    @brucehansensc 2 หลายเดือนก่อน

    I also was inspired by Time-Life The Universe. Really did make you want to build a rocket in your back yard. I'm sure you are inspiring lots of kids in the same way right now.

  • @loft82
    @loft82 2 หลายเดือนก่อน +1

    Hi Frasier, love your channel 😊
    Question: would the universe be colder if there had been no stars, galaxy's ect. .??
    Congrats on your 25 years ...

  • @allangibson8494
    @allangibson8494 2 หลายเดือนก่อน

    Adding repeaters to the deep space network would help - so having a deep space network in deep space would help.
    A 70m dish at Mars linked to a 70m dish at Jupiter would change a lot of things.

  • @culture-nature-mobility7867
    @culture-nature-mobility7867 2 หลายเดือนก่อน +1

    I'm a big fan of the Plonk-satellite!

    • @onebylandtwoifbysearunifby5475
      @onebylandtwoifbysearunifby5475 2 หลายเดือนก่อน

      Planck satellite gave us amazing Universe information. We need more science satellites and fewer bombs.

  • @Edward-om8mz
    @Edward-om8mz 2 หลายเดือนก่อน +3

    YEAH WE'RE GETTING OLD. But that's beautiful. Age is a bless.
    And about the moon...
    I grow up in Brazil and live in London 4 30 years n ALWAYS watch d moon n yeah it's upside down. I c a rabbit up or down. It's great isn't it?

  • @crowlsyong
    @crowlsyong 2 หลายเดือนก่อน +1

    Happy 25th anniversary!

  • @pi1392
    @pi1392 2 หลายเดือนก่อน

    Wow the show is the same age as me. Well done Fraser ❤

  • @mrxmry3264
    @mrxmry3264 2 หลายเดือนก่อน +2

    10:48 when a white dwarf exceeds the chandrasekhar limit, shouldn't it collapse into a neutron star instead of exploding?
    22:39 now why does that thing remind me of the eagles in space 1999?
    36:11 also, don't forget that the universe was much smaller and therefore much denser than it is today. that's gotta have some kind of effect.

    • @tonywells6990
      @tonywells6990 2 หลายเดือนก่อน +1

      A type 1A white dwarf supernova has a carbon-oxygen core, not a dense iron core, so when it goes supernova its entire core is blown apart and does not undergo core collapse into a neutron star.

  • @Severe_CDO_Sufferer
    @Severe_CDO_Sufferer 2 หลายเดือนก่อน

    There it is... (at 25:42) right in the middle. (right where it belongs)
    👉 it's a Plasmoid. 👈
    and it's always "right in the middle." (of stars, galaxies, and perhaps even atoms)

  • @onebylandtwoifbysearunifby5475
    @onebylandtwoifbysearunifby5475 2 หลายเดือนก่อน +2

    Technically...
    Those photons don't (likely) expetience time, so they don't travel to you until they "know" they can be exchanged between their emmiters and your electron recievers. It's a quantum particle exchange, just as 2 electrons sitting right next to each other exchange photonic force carriers. So the telescopes are even more amazing, as they are either communicating with the past, or were destined at the beginning of time to arrange the exchange... Thus communicating with the future.
    Which is just one more reason Chandra x-ray should't be shut down!

    • @sulljoh1
      @sulljoh1 2 หลายเดือนก่อน +1

      Maybe they have a tiny bit of mass

    • @onebylandtwoifbysearunifby5475
      @onebylandtwoifbysearunifby5475 2 หลายเดือนก่อน +1

      @@sulljoh1 Yes perhaps could be, but they can't have much.

  • @ninatolfersheimer
    @ninatolfersheimer 2 หลายเดือนก่อน

    I heared from people like Dr. Becky that we don't really know how the supermassive black holes at the centres of galaxies formed. What's the deal with this? Could you talk about black hole formation for a bit?

  • @koleoidea
    @koleoidea 2 หลายเดือนก่อน +1

    I've heard that all of the hydrogen in the universe was formed during the big bang. What sort of energies would be needed to synthesize a proton? Have there been any papers or ideas on how this might theoretically be done?