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

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
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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?
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[@21palica]

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

[@charleslaurice]

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]

Awesome!

[@RichardClark13]

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

[@10aDowningStreet]

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]

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.

[@realzachfluke1]

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]

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

[@thebogsofmordor7356]

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

[@kylemccaslin]

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]

Thanks! And keep up the good work!

[@marcelkernfx]

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

[@jaxdragon1723]

🎊🎉✨🎇🌛happy 25th Fras..🎆🧨⚡🌟⛅🌜⭐

[@josephmcphee9143]

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

[@Space_Library]

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!

[@markfrancis5164]

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 !

[@moremindsbetter]

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

[@TheTommyTanya]

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!! ❤❤

[@scottjohnston2116]

Congrats on 25 years!

[@bertdemeulemeester]

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

[@gary3808]

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

[@kyoteecasey]

Gratz on 25 years Fraser! Love your work mate

[@anthonygross226]

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.

[@ilessthan3bees]

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

[@ztublackstaff]

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

[@rienkhoek4169]

Great episode again Fraser! Congratulations on 25 years UT!

[@morfeusdream]

Always love this channel.

[@booradley4237]

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

[@RoxasXaviar]

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

[@user-pn4iz7ns1v]

Fantastic achievement! Thank you so much for your work🎉

[@TheAces1979]

Congratulations on a quarter century of excellence! Cheers mate!

[@NunoPereira.]

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

[@universemaps]

Happy 25 years of Universe Today, Fraser! 🎉

[@Noam-Bahar]

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

[@camsy83]

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

[@FrancisFjordCupola]

Congrats on the 25th birthday Universe Today!

[@runrin_]

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.

[@NovaDeb]

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.😊

[@revmsj]

This was a great week! 👍🏾

[@ruphind8376]

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

[@markfrancis5164]

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?!

[@parthhappy]

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.

[@markmcdougal1199]

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

[@kevingrooms8727]

Congrats on 25 years! Going strong!

[@user-kg4fr9jr7v]

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

[@coulie27]

I've often wondered about moon moons myself 😅

[@NullCreativityMusic]

Moon-Moon

[@Squeeko639]

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

[@12345.......]

Southern hemisphere stargazing is on my bucket list

[@brettclarke8892]

Happy Anniversary. I like your channel.

[@thorstenkrug144]

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

[@benjaminbeard3736]

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

[@frjoethesecond]

Andoria. Great question and great answer.

[@JohnSostrom]

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❤❤❤

[@richardreumerman5449]

Congrats on your 25 year anniversary!

[@Dan-Simms]

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

[@bobhillier921]

Thank you for 25 years

[@aurtisanminer2827]

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

[@tonywells6990]

[Andoria] Best answer of the week.

[@GRUMIAM]

Best videos on youtube by far.

[@jaygarricktheflash]

Congrats on the amazing accomplishment

[@hoppyrabbit1833]

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!

[@eamonia]

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

[@AubriGryphon]

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

[@gwenever7286]

Congratulations on your sites Silver Jubilee!

[@DarlinDarable]

Congrats on your anniversary!

[@rayg5146]

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

[@DanBennett]

Congrats on the 25th anniversary!

[@DeannaGilbert616]

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.

[@aetoski8724]

Congrats! You're the best out there!!

[@dontcare397]

thank you for your awesome show Frasier

[@topquark22]

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

[@RectalRooter]

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

[@laurachapple6795]

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.

[@recterbert]

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

[@jeremyeharris]

Cait! Thanks for sharing your astronomy origin story :)

[@savetheplantet5799]

Congrats man!!!

[@BrokenhornKT]

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

[@austinsapp5867]

Risa! Such a cool concept

[@pi1392]

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

[@bbbenj]

Thanks a lot 👍

[@loft82]

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 ...

[@marvinmauldin4361]

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.

[@araucaj7]

Congratulations 🎉❤,🙌

[@Dop3Dawg]

Congratulations Fraser! Here's to 25 more years👍

[@sergivaschenko]

Thank you!

[@elviscera4661]

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

[@crowlsyong]

Happy 25th anniversary!

[@GRUMIAM]

25 years??? Wow congratulations!!

[@sergey9986]

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.

[@user-ib4wf8sz9l]

Congratulations

[@pewterhacker]

Another great KZbin channel is Graviton Media.

[@nardocallanta3039]

Happy 25th! Wooooh Hoooh!

[@GreenCurryiykyk]

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.

[@MistSoalar]

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

[@supersaiyanfife]

Luna Park trip!!!

[@culture-nature-mobility7867]

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

[@onebylandtwoifbysearunifby5475]

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

[@KA4UPW]

Need a 25yr anniversary show! Please your favorite highlights

[@frasercain]

So many stories. Maybe 30,000 to go through?

[@brucehansensc]

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.

[@GrouchyHaggis]

Nimbus - First person to summit Olympus Mons sounds cool

[@CloudPeopleRecords]

Oh nooo.. I almost never comment and never before to disagree, BUT I think the answer about shadows on the moon is.. not right? Just watch the moon over the next year, (you're only slightly further north than me Fraser) you will see we have the smiley moon, a sad face, and the DreamWorks image (minus the fishing kid) from both directions and every rotation.. I think.. it surprised me too, but the realization was a family moment I will not forget.. Love the channel, I watch it all every week, (bring on the NIAC interviews!!) keep up the amazing work 🙂

[@CloudPeopleRecords]

Thought about it.. could it be due to the angle of the moon's orbit relative to our solar plane..? When it's low in it's relative inclination we would get the happy face??

[@Edward-om8mz]

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?

[@Sanfte_Spitze]

Hey Fraser and team, I've got some questions for you: Where is earth, the solar system and the whole milky way heading to? (I mean, after colliding with the Andromeda galaxy) What will Space look like, when it exists for, let's say, 1 x 10^500 seconds? What will happen to all those (supermassive) black holes? Will they just hang around forever in a single, maybe still huge spot (considering the last parsec problem)? Where does a galactic jet actually starts its journey? (According to the EHT 'picture' it at least doesn't start directly above the event horizon) And finally, what's your point of view on the current progress of the fusion technologies from all over the world? I highly appreciate your work and never felt more updated! Thanks a lot!!! Greetings from germany

[@koleoidea]

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?

[@ninatolfersheimer]

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?