[Urdu] How do we measure distances to stars?

In astronomy, distance to an object is one of the most important things to know. But this is also one of the hardest. Please join astrophysicist Salman Hameed in exploring a variety of ways in which astronomers measure distances. From Parallax method to standard candles, such as Cepheid variables and supernovae, we look at foundations of these methods. In addition, we discuss some of the foundational units of distance measurement, from an Astronomical Unit and a light-year to parsecs and megaparsecs. This is a Urdu (and Hindi) science documentary.
For more information:
www.kainaatstu...
Salman Hameed has a PhD in astronomy and is Charles Taylor Chair of Integrated Science & Humanities at Hampshire College and a member of the Five College Astronomy Department (FCAD) in Massachusetts, USA.
He is also the CEO of the non-profit Kainaat Studios
Credits:
Music: Umer Piracha
Visuals/images: NASA/JPL and ESA

[@faisal6089886]

Sun ki life or earth ki life Ka mjy 30 ki age my pta lga .. esy contents ki bht zarort hai .. bacho my new concepts aye gy way .. Allah ap sy razi ho .. ameen

[@muhammadgultasif2575]

واہ سر. کیا بات ہے آپکی. کیا ہی اچھا انداز بیان ہے.

[@KainaatAstronomyinUrdu]

Shukriya!

[@Intotheuniversewithpankk]

I love the way you explain sir, wonderful and knowledgeable video...

[@KainaatAstronomyinUrdu]

Thank you so much Pankaj! Hope you and your family are safe and healthy. And please, also check out our new kids astronomy channel in Urdu:kzbin.info/door/Dt7wgStPBzuxtcAf2qqnkg

[@Intotheuniversewithpankk]

@@KainaatAstronomyinUrdu sure sir

[@bilalahmed4589]

Difficult topic convert into simple and understandable lecture👍

[@KainaatAstronomyinUrdu]

Thank you Bilal.

[@zohaibmalik1714]

Welcome back sir .. Aj bilkul thek tarha sy pata chala measures units ka ... Sir you are amazing 👍 Please next video jaldi laiye ga thanks !

[@KainaatAstronomyinUrdu]

Thank you Zohaib!

[@mohammadsaleem-n2p]

aslam o alaikum.....i am a pakistani..form MADINA MUNAWWRA....i love ALLAH...Creator of universe.... I love sky... i have been watching nasa vidoes since years... i appreciate your efforts... listening something in mother language...I would say..MAZA AGYAA...jazak ALLAH khair..

[@KainaatAstronomyinUrdu]

AoA aur shukriya.

[@nadirabbas5215]

der se sahi par aa to gay. happy return sir,

[@astrolover1566]

Beautifully explained! It's fun watching your videos. I easily understand your videos. Keep it up! Allah apko oor kamyabi dy! Ameen ❤️

[@samiullahbutt4750]

I did not know about this vlog .Distance of the stars is also very interesting .Thank you sir .

[@KainaatAstronomyinUrdu]

Thank you Samiullah!

[@muhammadzainamjid5389]

This is the type of channel, I was looking for for quite some time. Gonna finish all the videos very soon to satisfy my hunger at least for some days ;-). Thank you, Sir!

[@KainaatAstronomyinUrdu]

Thank you Zain! It may take more than a few days - we have over 180 videos... :)

[@munimaziz4683]

Ye hai kainati gup shup or main hn Suleiman hameed and then tune blow my mind love your background music

[@KainaatAstronomyinUrdu]

Thank you!

[@moazzamkhan398]

They way you explain the things is really good. Keep it up

[@khalidhafeez6968]

Great well recorded video

[@nazishmoosakhan7132]

Waited a lot for your lecturer in ramzan . Amazing but still it is a little hard to understand I have saved the video and will again watch it

[@nainaion2166]

Finally kainati gupshup is back thank you for thr beautiful video after long time :)

[@KainaatAstronomyinUrdu]

Thank you Nain - and we now have a kids channel as well. Check it out and subscribe it too:kzbin.info/door/Dt7wgStPBzuxtcAf2qqnkg

[@nainaion2166]

yes I've already subscribed.

[@muhammadzuhaibforphysics]

One of the best videos on the subject

[@nazishmoosakhan7132]

Congrats for your new channel .it was a excellent initiative.

[@KainaatAstronomyinUrdu]

Thank you Nazish!

[@sohailzayn8294]

Best topic sir it helps in gain information. Big fan sir

[@WilliamBranhamsermons]

Nice to see you again here

[@KainaatAstronomyinUrdu]

Thank you.

[@sultanrayder]

Salman Skywalker! You explain very beautifully Sir 🌌

[@zainabzara4964]

So informative video sir Good to see you again And that's will.be more good to see you live again

[@Ali-cu4sh]

Finaly the wait iz over..Thanks alot sir for new video..

[@KainaatAstronomyinUrdu]

Most welcome!

[@m.abubakrm.abubakr1479]

Welcome back to KZbin Sir

[@RNG_BypassVIP]

Sir I was searching about Dark Matter and Dark Energy and finally landed on your this channel and found all your contents exactly according to my interests, Now, I've subscribed your channel and also pressed the bell icon :) Thank you Sir for making such informative videos to inculcate the knowledge of our universe.. May Allah bless you for this effort

[@KainaatAstronomyinUrdu]

Thank you and welcome to Kainaat Astronomy!

[@rk99688]

I am soo glad to see you return. Cannot wait for more great videos.

[@KainaatAstronomyinUrdu]

Thank you Rohail!

[@tariqashraf5855]

great to see you back!

[@KainaatAstronomyinUrdu]

Thank you Tariq. We were working on getting a channel for kids running. Check it out (and subscribe) here:kzbin.info/door/Dt7wgStPBzuxtcAf2qqnkg

[@tariqashraf5855]

@@KainaatAstronomyinUrdu subscribed will share with friends and family! thankyou for making quality content!

[@munimaziz4683]

Love you sir long time no see I really miss you

[@faisal6089886]

Sir please make detailed videos on our all planets .. and about the mass of our solar system ..

[@myhobbies5965]

Amazing explanation.

[@Kiranwi]

Great to see this type of channel from pakistan, great initiative. ❤

[@KainaatAstronomyinUrdu]

Thank you!

[@abdullahfaisal2487]

Aoa sir .... I'll very glad if you make a whole playlist about general relativity and specially about the concept of space time.... how space is a membrane and how heavy masses curves it🤷😔

[@ShahidHussain-oq4sp]

You solved also this mystery about the distance measurement in between stars and other objects. Fact based source of great knowledge. Keep it up I really appreciate it. Shukriya

[@KainaatAstronomyinUrdu]

Thank you Shahid! And do remember to check (and subscribe) our new kids channel as well:kzbin.info/door/Dt7wgStPBzuxtcAf2qqnkg

[@Zaibnama]

Zabardast kamal lecture sirrr

[@faisal6089886]

Sir kids k liye cartoon characters VDO my hony chahye .. Kuch wording bacho k hisab sy tough hai .. or agar Bary bacho ki baat kry to b aik masla hai k Bary bacho ko bht hi choty bacho ki Tarah VDO deliver ki ja rahi hai .. but ye bht Achi koshish hai ap ki .. is sy humary bachy b Kuch Acha seekhy gy khel khel my.

[@RealAliAbbas]

Sir you have been enhancing my love for astronomy for past 5 years, I appreciate your efforts :)

[@QaiserShakoor]

Proud of you sir!

[@knowledgecollection1926]

Sir, I'm Very happy to saw your fresh video .....

[@WilliamBranhamsermons]

please upload regularly

[@user-yi3cy9en4b]

Your intro is always very attractive love you so much sir

[@KainaatAstronomyinUrdu]

Thank you so much 😀

[@yasirinterstellar7371]

Amazing sir about prallex knowledge sir plz Voyager recently Cosmic hum detecting ki vedio banyn

[@junaidwaheed9257]

Good to see you back sir..its been so long

[@KainaatAstronomyinUrdu]

Thanks - and remember to check Kainaat Kids channel as well:kzbin.info/door/Dt7wgStPBzuxtcAf2qqnkg

[@junaidwaheed9257]

@@KainaatAstronomyinUrdu great stuff sir

[@malikar699]

I love it when you say "LEKIN" 🙂 Have learned a lot from you sir

[@KainaatAstronomyinUrdu]

Thank you Abdul Rahman

[@Astro6771]

Good to see you back

[@habibrahman3465]

Happy to see you Sir 😍

[@KainaatAstronomyinUrdu]

Thank you Habib.

[@usmanjaved6690]

Sir, nice to see you after almost one light month.😆 Look, we have started to talk in light years having watched your videos regularly.🤣

[@KainaatAstronomyinUrdu]

Ha! Good one. And please check out (and subscribe) our new kids channel as well. It will take only a light minute ;) :kzbin.info/door/Dt7wgStPBzuxtcAf2qqnkg

[@muhammadfahad4653]

@@KainaatAstronomyinUrdu done

[@abubkarmughal2314]

Love you sir, bht time bad new video ai. Mn bht intizar kr raha tha.

[@KainaatAstronomyinUrdu]

Abu Bakr - thank you. We were working on getting a new kids channel ready:kzbin.info/door/Dt7wgStPBzuxtcAf2qqnkg

[@tasawarnazir5629]

Very very nice information

[@KainaatAstronomyinUrdu]

Thank you Tasawar!

[@muhammadfahad4653]

Amazing

[@zeeshan.arif26]

Great Explanation sir.

[@KainaatAstronomyinUrdu]

Keep watching Zeeshan!

[@zeeshan.arif26]

@@KainaatAstronomyinUrdu Waiting for new videos Sir...

[@zia-ur-rahimazadofficial]

Welcome sir! After a long a time

[@KainaatAstronomyinUrdu]

Thanks - yes, a 4 week break. But we were working on getting another channel going for kids:kzbin.info/door/Dt7wgStPBzuxtcAf2qqnkg

[@Ali-cu4sh]

Suggestion.. Sir aap jo subtitle add krtyn hyn unka background remove krdyn..ya dimm krdyn..so that vdo mei aany waly images zyada behtr nzr ayn..

[@KainaatAstronomyinUrdu]

Ali - thank you. I don't know if I have control over the subtitles - but you can switch the subtitles off in the video. Thanks.

[@irfanrashid2114]

Sir please do an episode on Hubble space telescope. Its history, why it could be the most important telescope till date and How it functions and orientate itself in space etc. :)

[@schrodingerssmiley2136]

You're so amazing.

[@shabbirahmeddar7765]

Very informative.

[@KainaatAstronomyinUrdu]

Thank you Shabbir.

[@abdulrashid6684]

اگر ایک ویڈیو جیو میٹری کے زریعے بنا کر سمجھا دیں کہ فاصلے کیسے ناپے جاتے ہیں تو مہربانی ہو گی۔

[@news4info894]

Very good v log..

[@KainaatAstronomyinUrdu]

Thank you Eshaq!

[@sultanrayder]

Very informative Sir I can see stars moving in your background, it means you're far far away in a galaxy.

[@sultanrayder]

@Zohaib Lone no! it means I'm a Star Wars fan 😂. I'm not 🚭high 🤣

[@Adventurer1929]

Very informative

[@m.faseehurrehman5497]

Thank u sir. Your videos are soo helpfull for me. Keep making these types of tremendous videos🖤🖤🖤

[@KainaatAstronomyinUrdu]

Thank you Faseeh!

[@Saqlain_odyssey]

That's quite helpful and informative video thanks sir I always wait for your video that when you will upload new video, I like you sir

[@KainaatAstronomyinUrdu]

Thank you Saqlain!

[@ahmedbilal6196]

Amazing teacher

[@KainaatAstronomyinUrdu]

Thank you Ahmed.

[@KSVOICE]

Very good...

[@KainaatAstronomyinUrdu]

Thanks!

[@nasarraza4670]

Sir ek vedio Planatory nebulae pe banao ke kase ek star ya sun wajood main aya ...

[@KainaatAstronomyinUrdu]

Here is an older video on it: kzbin.info/www/bejne/h36zpY2Pfb6Hfc0

[@faizalamsahib8040]

Jazak-Allah

[@sayyidaftab4919]

Wow informative

[@KainaatAstronomyinUrdu]

Thank you Aftab!

[@beautiful-nature8628]

You are great sir 🙂🙂 jaldi video dalla kro plz

[@KainaatAstronomyinUrdu]

Thank you!

[@mirzausama6967]

Welcome back 🙂

[@KainaatAstronomyinUrdu]

Thank you Mirza. As I'm pointing to everyone else here as well, do check out (and subscribe) our new kids channel as well:kzbin.info/door/Dt7wgStPBzuxtcAf2qqnkg

[@zubairmirza1832]

These long distances give me the chills! Does the space have any boundaries? I mean there must be some point where our future spaceships will collide!! Regards

[@Fusionplay99]

Make a video on dimensions

[@sultanrayder]

Love you Sir 🌠

[@sameertariq4866]

Sir sari vedio bohat achi samaj aa gai siwaye arc second k 🙂

[@KainaatAstronomyinUrdu]

Sameer - arcsecond is a unit of angle. So a circle has 360 degrees. You can think of it is a circular clock. You can divide the circle equally in 360 parts. Now 1 degree can be divided in 60 arcminutes. And you can divide each arcminute into 60 arcseconds. So arcsecond is a very very small angle. Astronomers use these angle measurements on the sky as well. Hope that clarifies a bit... :)

[@sameertariq4866]

Thank you sir! now the picture is more clear.

[@Ma5898673]

ہماری سپیس ایجنسی کیوں اتنی پیچھے ہے؟؟۔ جبکہ آسٹرونومی ایک دلچسپ مضمون ہے۔

[@sohailzayn8294]

Intrensic brightness kaise pata chalti hai kisi bhi star ki? Aur waha se kaise distance pata chal jata hai?

[@nazishmoosakhan7132]

10:11 just to tell you I hear it with concentration

[@mereyaar7349]

Nice...

[@sushaminirastogi7389]

Very informative and interesting video 👍👍 sir, please discribe re layra and cepherd variable stars in next video ,thank you sir🙏🙏

[@KainaatAstronomyinUrdu]

Thank you Sushamini - at some point there will definitely be a video about cepheid variables... :)

[@GHAYYC]

Great video

[@TasawarMalick]

Sir...Where is Asmaan? Is Black hole door to another universe?

[@zainabzara4964]

And I also subscribe your kids kanaty channell Keep it up sir👏👏👏

[@khawajatayyabirfan7942]

Appreciate your efforts 😊 SIR🙏

[@KainaatAstronomyinUrdu]

Thank you Khawaja!

[@zahoorfarooqi7082]

سلام ڈاکٹر صاحب

[@zahoorfarooqi7082]

Interesting subject

[@usama57926]

Sir *3 body problem* par b video bnain ................ pls

[@KainaatAstronomyinUrdu]

Hmm....perhaps on a physics channel.. :)

[@muhammadahsan8056]

Assalam alaikum good program

[@isi6402]

A.o.A sir Can we able to make stellar Engines to move planets or stars as NASA i think has some plans to do test of stellar engines which is run on Nuclear fission and are they able to move planets or stars ,there are many structures of stellar engines images are created or If we did should we interfere in God creation system please explain.

[@Saif-kn9nf]

👍

[@sarahsiddiqui786]

After a long time finally you showed up with a very interesting video about distance measurements. Can I ask about your email to ask some questions? And Eid mubarak : -)

[@KainaatAstronomyinUrdu]

Eid Mubarak Sarah! And yes, my email is in the "About" section of the channel. Yes, we had a break to create a new channel for kids, Check it out (and please subscribe): kzbin.info/door/Dt7wgStPBzuxtcAf2qqnkg

[@sarahsiddiqui786]

@@KainaatAstronomyinUrdu yes I have already subscribed the kid channel yesterday. How could I missed 😊

[@bismacosmos]

Finallyy 🤩❤️

[@naveedekhan1]

Sir if space is stretching it means space is like a sheet which stretch and if it's true then space is sone type of tangible and located somewhere where it stretch or shrink?

[@KainaatAstronomyinUrdu]

No - space is not 'located' anywhere. Space is the property of the universe itself. it is hard to imagine as we are part of the universe...

[@usamasaifrana1839]

Sir thank you so much for addressing my question...! But I want to ask that how can we make earth as a base when it is not still and even starts are not still they are also moving continuously

[@mbilal8134]

Sir bohat wait kia apki new video ka

[@KainaatAstronomyinUrdu]

Bilal - yes, we took a 4 week break to get a channel for kids running as well. Check it out:kzbin.info/door/Dt7wgStPBzuxtcAf2qqnkg

[@jaankhan444]

Allah Akbar

[@muhammadfahad4653]

Sir you talk about dark energy in universe what does it mean.

[@KainaatAstronomyinUrdu]

Fahad - see my video on Dark Energy...

[@muhammadfahad4653]

@@KainaatAstronomyinUrdu thanks

[@malikjigz8179]

sir ji love you

[@KainaatAstronomyinUrdu]

Thank you!

[@husnain7099]

Nice Sir

[@HaiderKhanPakistan]

Sir, thank you for the video. However, I fail to understand the non-parallax methods of distance measurement. If we look at a star, there are two factors in play apart from their brightness: their distance (as you mentioned) as well as their sizes/masses. So, it is perfectly possible for us to measure the same brightness for two stars: one that is nearer and smaller and two that is farther but larger. How do you solve this problem?

[@KainaatAstronomyinUrdu]

Great question Haider. This is the reason you have to use a type that you know its physical properties (including size and stage of evolution). This is the reason Cepheid Variables are soooo important. Hope that answers a bit...

[@HaiderKhanPakistan]

Thank you for the response, Sir. I'll learn more about Cepheid Variable stars

[@waseemazad5601]

Sir why didn't you join SUPARCO

[@KainaatAstronomyinUrdu]

Waseem - sometimes life takes you in unexpected directions...

[@khalidshahzad93]

Sir abhi bhi bohat confusion ha star ky distance ki ya accurate distance tu nahi ho sakta

[@KainaatAstronomyinUrdu]

Shukriya Khalid!

[@bilalshahid2439]

❤❤

[@pubglover5082]

❤️❤️🥺

[@HammadAli-lq1iq]

sir chinese rover landed on mars. make vedio on it!