Alcor versus Mizar - Double Stars in Ursa Major

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!
Links and Resources Mentioned in this video
▶ Ursa Major Constellation: bit.ly/LearntheSky-UrsaMajorCo...
▶ Visit David A. Cocklin Photography: / david_a_cocklin
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Пікірлер: 41

  • @learnthesky
    @learnthesky2 ай бұрын

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

  • @ashutoshupadhyay8955
    @ashutoshupadhyay89552 жыл бұрын

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

  • @pragatibaishya328
    @pragatibaishya3283 жыл бұрын

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

  • @learnthesky

    @learnthesky

    3 жыл бұрын

    Fantastic! Did you see the double star?

  • @pragatibaishya328

    @pragatibaishya328

    3 жыл бұрын

    @@learnthesky yes so clearly...❣❣❣

  • @pragatibaishya328

    @pragatibaishya328

    3 жыл бұрын

    @Jackstar769 done👍 Thanks man😄

  • @learnthesky

    @learnthesky

    3 жыл бұрын

    I’m so glad you found it!

  • @pragatibaishya328

    @pragatibaishya328

    3 жыл бұрын

    @@learnthesky 💓

  • @jaswindersidhu5265
    @jaswindersidhu52653 жыл бұрын

    Perfect as always

  • @murthyvvbs5589
    @murthyvvbs55895 ай бұрын

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

  • @matyiboogie531
    @matyiboogie531Ай бұрын

    Exceptional video. Thanks.

  • @jelenalez2240
    @jelenalez22402 ай бұрын

    Learn the Sky thanks for the video:)!

  • @southern_smacker
    @southern_smacker2 жыл бұрын

    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.

  • @cgocbya5204
    @cgocbya52045 ай бұрын

    Thank u this is so informative, well explained.

  • @anthonygaming08
    @anthonygaming082 жыл бұрын

    Thanks Janine! This video is so helpful! 👍🏻

  • @jaybouchard5997
    @jaybouchard59973 жыл бұрын

    These are the best videos

  • @mikehartman5326
    @mikehartman53262 жыл бұрын

    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

    @auldteuchter9012

    7 ай бұрын

    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.

  • @ramachandramoorthy682
    @ramachandramoorthy6823 жыл бұрын

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

  • @luismerchan9140
    @luismerchan91403 жыл бұрын

    I love this vid!

  • @rickcain988
    @rickcain9883 жыл бұрын

    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.

  • @anmoldeep2400
    @anmoldeep24003 жыл бұрын

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

  • @jram8043
    @jram80432 жыл бұрын

    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
    @cesarabdieljameslujan2 жыл бұрын

    I enyoy this video.

  • @MountainFisher
    @MountainFisher2 жыл бұрын

    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
    @richardwarren17182 жыл бұрын

    I think I'm in love.

  • @Windermed
    @Windermed Жыл бұрын

    Hello Shining One

  • @patclark6032
    @patclark60322 күн бұрын

    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.

  • @kpopkingdom1380
    @kpopkingdom13804 ай бұрын

    vashistha and arundhati

  • @penguinluvinman
    @penguinluvinman2 жыл бұрын

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

  • @learnthesky

    @learnthesky

    2 жыл бұрын

    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

    @penguinluvinman

    2 жыл бұрын

    @@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?

  • @SrikantNaladala
    @SrikantNaladala6 ай бұрын

    Mizar:Alcor=Vashishta:Arundhati

  • @akilghosh
    @akilghosh3 ай бұрын

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

  • @kevanhubbard9673
    @kevanhubbard9673 Жыл бұрын

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

  • @ratgenerationx2946
    @ratgenerationx2946 Жыл бұрын

    Im from the Alcor

  • @meisbaconyay7
    @meisbaconyay7 Жыл бұрын

    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
    @rockinroller598 ай бұрын

    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
    @MountainFisher2 жыл бұрын

    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

    @learnthesky

    2 жыл бұрын

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

  • @MountainFisher

    @MountainFisher

    2 жыл бұрын

    @@learnthesky I was just making a joke Janine.