Alcor versus Mizar - Double Stars in Ursa Major

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Discover how to find Alcor and Mizar, a visual binary set that can be seen with the unaided eye in Ursa Major. This pair of stars was once an ancient eye test, but with advanced technology, astronomers have discovered that there is more here than meets the eye.
Chapters:
0:00 - Intro to Alcor and Mizar Visual Binary Star
2:26 - Mizar System
3:21 - Alcor System
4:27 - Venn diagram comparison
5:24 - Ursa Major Moving Group
6:21 - Practice finding Alcor and Mizar
7:39 - Review of Alcor and Mizar
8:20 - Thank you!
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Опубликовано:

6 июл 2024

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Комментарии : 41

@learnthesky 2 месяца назад

Thanks for watching! New to stargazing? Download my FREE Stargazing Starter Guide: www.learnthesky.com/stargazing_starter_guide

@ashutoshupadhyay8955 2 года назад

We call it arundhati (alcor) and vashishtha(mizar) Of saptarishi constellation (pan handle of Ursa major)🙏

@pragatibaishya328 3 года назад

I was just looking at the sky watching the big dipper then i got the notification of this video 😁💕💕

@learnthesky 3 года назад

Fantastic! Did you see the double star?

@pragatibaishya328 3 года назад

@@learnthesky yes so clearly...❣❣❣

@pragatibaishya328 3 года назад

@Jackstar769 done👍 Thanks man😄

@learnthesky 3 года назад

I’m so glad you found it!

@pragatibaishya328 3 года назад

@@learnthesky 💓

@jaswindersidhu5265 3 года назад

Perfect as always

@southern_smacker 2 года назад

In the hot climate countries people use to sleep under sky at night. When I was a child I used to lay down for sleep and specially look on the Big Dipper, specially I could notice two stars in Alcor & Mizar. At that time I thought it to be a planet with its moon.

@murthyvvbs5589 6 месяцев назад

Good topic- ever doubtful for me, its cleared now. Thank you very much

@anthonygaming08 2 года назад

Thanks Janine! This video is so helpful! 👍🏻

@matyiboogie531 Месяц назад

Exceptional video. Thanks.

@jaybouchard5997 3 года назад

These are the best videos

@luismerchan9140 3 года назад

I love this vid!

@jelenalez2240 3 месяца назад

Learn the Sky thanks for the video:)!

@anmoldeep2400 3 года назад

Great video...didnt knew about the moving star group...learnt something new...thnx👍

@rickcain988 3 года назад

Listen to yourself my friend. This screams life outside our system. Binary system. Bi means 2. Like a twin system we are in. 2 solar masses. You found life. People are just to programed to understand. Great job.

@cgocbya5204 5 месяцев назад

Thank u this is so informative, well explained.

@ramachandramoorthy682 3 года назад

I love u so so much mam.. From India...

@mikehartman5326 2 года назад

What would be good to show is photos of Alcor and Mizar and the slow movement over time. For example photos taken in 1970, 80, 90 and so on. As a boy my brother told me about these stars. He too mentioned they were a test of eyesight. Over time I saw the apparent gaining of separation. So in my lifetime I've seen a perceptible motion of stars. It is this motion that would be cool to see in dated photos. Thank you for this video.

@auldteuchter9012 8 месяцев назад

Yes. I was curious so did a brief trawl and an orbital period of three quarters of a million years was mooted. If you are really keen you could do the calcs -- Wiki "orbital period". Couldn't find an animation, which would be cool, but possibly on the interweb somewhere.

@jram8043 2 года назад

so good information.. I thought there are only two stars as per our Indian mythology - Mizor is called Vasishta and Alcor is called Arundathi

@cesarabdieljameslujan 3 года назад

I enyoy this video.

@MountainFisher 2 года назад

Funny I was looking at these the other night with my 6 inch scope at 24x. I saw that the little one was red, but at 24x I was able to see three stars. I'm going to check it out again at 50x and 120x later.

@richardwarren1718 3 года назад

I think I'm in love.

@Windermed Год назад

Hello Shining One

@penguinluvinman 2 года назад

When you say "mizar" is 2 solar masses, does that mean the combined mass of all 4 stars in the system?

@learnthesky 2 года назад

Mizar having 2 solar masses means it has twice the mass of our sun. Astronomers compare star mass with our own sun...in other words: Sun = 1 solar mass

@penguinluvinman 2 года назад

@@learnthesky right, but since mizar is actually 4 stars, does it mean the combined mass of all four is 2 solar masses, or like they're an average of 2 solar masses each?

@patclark6032 23 дня назад

Good video! But you should correct your thumbnail - it shows the 4 star system labeled as Alcor, 2 star as Mizar. Those labels should be reversed. Although that's why I watched your video, so maybe that's clickbait. Otherwise good content.

@akilghosh 4 месяца назад

So when we look at one star its technically 6 stars. Never new this about big Dipper

@kpopkingdom1380 5 месяцев назад

vashistha and arundhati

@kevanhubbard9673 Год назад

It's challenging to separate them naked eye but can be done in dark skies.Even tiny binoculars will split them no problem.

@ratgenerationx2946 Год назад

Im from the Alcor

@SrikantNaladala 6 месяцев назад

Mizar:Alcor=Vashishta:Arundhati

@meisbaconyay7 Год назад

It's not a quadruple star system, it's a sextuple star system Mizar A Mizar Ab Mizar B Mizar Bb Alcor A Alcor B

@rockinroller59 8 месяцев назад

Mizar is pronounced as Al Meezurr, its arabic for ‘apron’ or to ‘cover’, it is NOT MYZAAR! Alcor is also arabic and is pronounced Al Khwaar - the faint one! Glory and victory to the Arabs who made immense progress and stride’s with astronomy and all the sciences👍more than half of the star names are arabic!

@MountainFisher 2 года назад

Primary, secondary, tertiary, quaternary, quinary, senary, septenary, octonary, nonary, and denary. And you call yourself a teacher? " A sextuple system",😅😂🤣😘. It's ok, I thought it was hexonary and I have 2 Masters. 12 is duodenary and there is no recognized word for 11, possibly eleventy from Tolkien when Bilbo had his eleventy-one birthdate, 111?

@learnthesky 2 года назад

A sextuplet is what astronomers call a system of six stars. It is a real word.

@MountainFisher 2 года назад

@@learnthesky I was just making a joke Janine.