Binary and Multiple Stars: Crash Course Astronomy #34 | Solar & Wind Products; View Hundreds of Solar & Wind Products Here!

Binary and Multiple Stars: Crash Course Astronomy #34

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Double stars are stars that appear to be near each other in the sky, but if they’re gravitationally bound together we call them binary stars. Many stars are actually part of binary or multiple systems. If they are close enough together they can actually touch other, merging into one peanut-shaped star. In some close binaries matter can flow from one star to the other, changing the way it ages. If one star is a white dwarf, this can cause periodic explosions, and possibly even lead to blowing up the entire star.

Crash Course Astronomy Poster:

Table of Contents
What are binary stars? 0:51
Merging peanut-shaped stars 6:52
Close binaries begin to flow into one another, sometimes blowing up the star 8:29

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PHOTOS/VIDEOS
Big Dipper [credit: Rogelio Bernal Andreo]
Sirius [credit: NASA, ESA, H. Bond (STScI), and M. Barstow (University of Leicester)]
Sirius A and B [credit: NASA/SAO/CXC]
Clashing Winds (video) [credit: NASA’s Goddard Space Flight Center]
The Radial Velocity Method (artist’s impression) [credit: ESO]
Mizar+Alcor [credit: Wikimedia Commons, Thomas Bresson]
Polaris [credit: NASA, ESA, and G. Bacon]
Does the Sun Have Long Lost Siblings? [credit: SciShow Space]
Clashing Winds (image) [credit: NASA/C. Reed X-ray images courtesy of NASA/GSFC/S. Immler]
Artist’s impression of the pulsar PSR J0348+0432 and its white dwarf companion [credit: ESO/L. Calçada]
Artist’s impression of eclipsing binary [credit: ESO/L. Calçada]
Artist’s impression of the yellow hypergiant star HR 5171 [credit: ESO]
Nova [credit: NASA, Casey Reed]
Artist’s impression of RS Ophiuchi [credit: David A. Hardy/ & PPARC]
An artist’s impression of Sirius A and B [credit: NASA, ESA and G. Bacon (STScI)]
Artist’s impression of vampire star [credit: ESO/M. Kornmesser]
Type Ia supernova [credit: Walt Feimer, NASA/Goddard Space Flight Center]

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26 Comments on "Binary and Multiple Stars: Crash Course Astronomy #34"

  1. venkatesh V says:

    In the case of peanut emerging star is there a chance for the formation of black hole??

  2. Stormbreaker says:

    My mind got blown after this video 💥
    I've learnt so much from this. The universe is so wonderful.

  3. Ivan says:

    Do all binaries orbit each other? Or do some have one star orbiting a other star like Earth orbits the Sun?

  4. Hayley Leal says:

    this video is so illuminati of you

  5. Hayley Leal says:

    Crash course astronomy is my favorite! You rock Phil!

  6. #The Anonymous Sexual Redditor +Haise Leonhardt Agreed. @Militant Pacifist

  7. hubes69 says:

    4:44 How do we have so much oxygen in the Sun? That's a jump in the periodic table right? Leftovers from old stars?

  8. Thank you really much for making this episode, Phil Plait, Aranda, Sweeny, Thaller and all the others at Crash Course Astronomy! Yes, indeed, binary stars are important are really interesting…fascinating! I was actually quite surprised to learn that a such large portion of the stars in the Universe form a multiple-star system: one third! Cool.

    So, if matter is transported from one star to the other slow enough, theoretically, the stars in a recurrent binary system could live forever? Nice! Eternal life due to the strange properties of the Universe.

  9. Crispy says:

    Would the white dwarf supernova annihilate the companion star?

  10. Adam Eves says:

    Look, i Challenge you, anyone, to watch ERic Dubay and/or Jeranism,
    then., come back to me and just ask. I simply use Eric Dubay and
    Jeranism as a 'template', on which the still sleeping , may and should
    understand the Big Deception of the powers that be. you know.

  11. falconsfye says:

    QUESTION! How is it that stars produce white light but can be seen as red yellow orange and blue

  12. Kuish KxM says:

    The sun might not be alone nemesis is a somewhat thing in some people

  13. So, once a star that couldn't explode into a supernova, could, if it absorbed a stream from a generous companion? Am I wrong?

  14. somehow you hear more and more german words in english videos, or is that just my perception?

  15. Phill i am a fan of nasa and yesterday i saw my first binary system and it was the sirius one because it was in the north and i saw the small star moving from one side to the other side of the big star From agata's son Jakub

  16. The sun is a binary because there is a red dwarf orbiting the sun called nemisis

  17. rani johanes says:

    Do you know that our sun is a two star binary system

  18. rani johanes says:

    But our star companion nemisis is so far away from the sun

  19. varun mj says:

    and if the white dwarf undergoes a supernova then what are we left with?
    is it a pulsar from white dwarf or what?
    i am confused!!!!!!

  20. Darth Vader says:

    6:32 you spoke the opposite of what's true. brightness shouldn't drop when fainter start goes behind the bright.

  21. Keonwoo Park says:

    What if ancient super advanced civilizations somehow "constructed" these pentuplets and sextuplets of stars as monuments of their civilization.

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