How Two Dead Stars Sparked a New Field of Astronomy

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Pulsars are more than just cool blinking lights shining across the universe. The discovery of the first binary pulsar paved the way for gravitational wave astronomy astronomy today.…195L..51H

  1. New Message

    Pulsars are proof the universe loves dubstep.

  2. starseed96

    Every pulsar is a binary system. The pulses are plasma discharges between the stars.

  3. Michael500ca

    This universe is weird. I would not want it any other way.

  4. Osmosis Jones

    If you push away energy from around you to behind you . Would you also be pushing away Mass


    no such thing, here is a clue, like attracts like

  6. Jimmy Bates

    You can’t reify space and time, these are things that don’t exist… like a shadow

  7. Carn Soaks

    Chance discovery???
    You said they were searching actively for pairs.

  8. key9405

    in a hypothetical situation, if you were very close (visually able to see without any telescope) a source of gravitational wave, would you see or feel the effects of gravitational wave?

  9. jtkent28

    Wait.. these stars are spinning around each other at THE SPEED OF LIGHT??

  10. Big dundee

    Oooh the golden eye telescope in porta rico

  11. Viryl Lucas


  12. SP1TF1RE

    Is the mass of a pulsar proportional to its rotational speed?

  13. cliff luebke

    why does he keep saying ” WE ” ?

  14. VariantAEC

    One question…
    How do neutron stars collide without collapsing into a black hole?

  15. infinateU

    the American Pentagon has already “LOST” more tha 21 TRILLION Amercican Dollars, why figure out a way to “Space Travel” or “Control Time/Reality”?

  16. J Car


  17. hellcat1988

    Doth mine eye deceive me? A video from a major channel WITHOUT an embedded add spot front and back? Could we finally be getting back to a reasonable era of videos without commercials more obnoxious than television?

  18. Brother Nobody

    oh puh-lease…its just detecting when the giants, cause it’s obviously giants controlling the lights in the sky-dome, drop something…like a can of paint or something 😼

  19. Ronald McPaul

    Did this guy lose weight? Looking good.

  20. Kon Jamo

    6:13 Radioastronomers shaking their heads so vigorously that gravitational waves are created. CBR anyone?

  21. Χ’Χ€Χ¨Χ” Χ¨ΧΧ•Χ‘ΧŸ

    Hello SciShow Love your videos. Can I please have two questions thank you. I don’t understand how we conclude that the speed of light is constant throughout the all universe? When we only checked in one place! It just doesn’t make any sense at all!?
    Scientists have taken the word Ether, which describes the geometry of the universe and said that now it no longer exists. What is?
    There is energy and mass, which are equal!
    And they can be found in the universe and therefore make a shape or in other words the geometry of the universe, so E+M = Ether! no ?
    Love and Light

  22. infinateU

    so what kind of weapon can a better understanding of “strange waves” lead us to?

  23. tracey adkins

    Well, running out of new science stuff? Now we are in the prequel era? Lol.

  24. jojolafrite90

    Why a video on this subject all of a sudden? Plus it’s pretty basic stuff that was repeated ad nauseam by every other scientific show.

  25. mike Dizzle

    It looks like a light is on behind his eyes

  26. MrDino1953

    Hey editors, how about inserting just a few more milliseconds of delay in between his sentences? It’s pretty gruelling listening to a wall of words without any punctuation. Show some courtesy to your audience.

  27. zack

    i love you’re vudeosβ£οΈπŸ’œπŸ’œπŸ’œπŸ’œπŸ§‘πŸ’›πŸ˜ŠπŸ˜Šβ˜ΊοΈπŸ€£πŸ˜‚πŸ˜‚πŸ˜‚πŸ˜…πŸ˜…πŸ˜£πŸ˜€πŸ˜€πŸ˜€πŸ˜πŸ₯°πŸ₯°πŸ₯°πŸ₯°πŸ₯°πŸ₯°πŸ₯°πŸ˜πŸ₯°πŸ₯°πŸ₯°πŸ₯°πŸ₯°πŸ₯°πŸ₯°πŸ₯°πŸ₯°πŸ₯°πŸ₯°πŸ₯°πŸ˜πŸ₯°πŸ˜‡πŸ˜‡πŸ₯°πŸ₯°πŸ₯°

  28. Peter Bonnema

    Do gravitational waves have energy? If so, wouldn’t they be affected by gravitational lensing just like light is? Or maybe they don’t need energy (mass) for that

  29. Andy McGowan

    Great vid, there are still only two genders barring outliers…..

  30. Florin Olariu

    Can you surf a gravitational wave?

  31. stvp68

    History and science!!!

  32. NOOKEY69 Hard!!

    Are Pulsars flat like Earth??πŸ€”πŸ€”πŸ€”πŸ€”πŸ€”

  33. Brenden Pischke

    If gravity really does affect time, and we have figured out how to detect gravity then we need to get even better at it. That way we can give time forecasts as well as weather forecasts, because there are some days where it is just too obvious that time has changed it’s pace.

  34. Scott

    The Arecibo Observatory is where Goldeneye happened!

  35. Herr Schmidt

    hum isn’t everything traveling through space & time except maybe stuff in the quantum world?

  36. Ruud Slenters

    Do black holes effect gravitational waves?

  37. Mikel 666

    great video

  38. Joebob Briggs

    First, πŸ˜†.
    Seriously though, top notch as always.

  39. Din Aur

    People who discover it:
    Also people who discover it: brainded

  40. H Koizumi

    Question, do gravitational waves travel faster than light?

  41. James Berend

    Tough decision watch vlogbrothers or scissor space first πŸ€”

  42. G-Box 2

    When y’all gonna talk about Pulsar Timing Arrays? It’s the new(ish) way to detect gravitational waves from pulsars! I know they haven’t detected anything yet, but they are probably going to within the next 5 years

  43. NorthObsidianG

    Anything space news really got me riled up.. but then makes me sad as such achievements are rare in other innovations like robotics and mechs

  44. Kid Mohair

    I found myself thinking through this episode,
    that perhaps we are looking in the wrong part of the spectrum, or phenomena,
    for gravitational waves…
    since space/time is “warped” by these “waves” and we possess pretty accurate clocks
    maybe the time side? or a combination
    (but that only came to me while writing this)

  45. George Michael Sherry

    As I commented 4 days ago on the Parker Solar Probe video, it’s wrong to speak of multiplying comparative qualities. You can quantify how big something is (10 meters tall, 2 kilograms in weight) — size is an absolute quality, counting from zero and going up — but you can’t quantify how small anything is, merely that it’s smaller than something else. In this case the example is at 5:37: “ten thousand times smaller than a proton.” What am I supposed to multiply (times) by ten thousand? “one ten thousandth the size of a proton” is the same number of syllables and has the advantage of being correct, which on a science channel should count for something. Yes, I understood what the writer meant, but my ability to interpret it doesn’t keep it from being wrong.

  46. Sogen Okami

    Turns out that 80ms delay was God’s server lagging. In response he zapped his server a new AMD Threadripper so the scientists can continue their research uninterrupted.

  47. The Exoplanets Channel

    SciShow Space uploads and ESA launches the CHEOPS exoplanet telescope, *best day of the year!*

  48. rick hale

    It’s always maybe, could be, might, seems to. Wait long enough and facts morph and change. Skepticism and reservations of absolutes has increased with my age. It’s healthy. “To err is human” is an absolute I do support.

  49. Napoleonic S

    Question, so why are these astronomical objects that made news are all so far away? Why don’t or can’t we detect these things that are inside the milky way?

  50. eSKAone

    So exciting!

  51. DaBlondDude

    If gravitational energy is lost shunt they move further apart?

  52. christosvoskresye

    One bright morning in the middle of the night
    two dead boys got up to fight
    Back to back they faced each other
    Drew their swords and shot each other
    A deaf policeman heard the noise
    and ran to save the two dead boys
    If you don’t believe this lie is true
    ask the blind man, he saw it, too.

  53. Mark Pendragon

    Enjoyable and informative. A quibble about the closing line though. Is it fair to call this a ‘chance discovery’? It sounded like they did a lot of hard work looking for it. So whilst they may have been lucky in the work panning out, it is not fair to imply they just stumbled upon it (like penicillium for example).

  54. Lizzard 7


  55. M961

    Oh frick ya I love space

  56. Connor Sullivan

    Would it be possible to make a video on the Schwarzschild radius, and it’s somewhat unexpected relationship with black hole density?
    Like I did some calculations, and assuming I did my maths right, a hypermassive black hole at 10billion Γ— the mass of the sun, would only be about as dense as helium. Which is just wild.
    Additionally, does this mean a helium balloon with a 200au radius would immediately collapse into a black hole?

  57. John Opalko

    Very well done and interesting, but I have a nit to pick.
    As the two objects orbit closer together they speed up to conserve _angular_ momentum, not momentum. Those are two entirely different quantities.

  58. Catania Lipuzic Panitz

    More information.😍

  59. Chris2008

    Just to make sure that nobody misunderstands anything here: It’s LIGO, not LEGO.

  60. sdfkjgh

    0:48 Nae Touchen der Blinkenlighten!

  61. Teo GΓ‘rate

    5:22 the sucker XD

  62. FireSnake

    small question, if the distortion caused by a gravitational wave is smaller than the planck length, which i assume it would be for my hand, that wave would be unable to have any impact on space time right? Because the distortion is causes are so small not only can’t we detect them but the fabric of the universe doesn’t acctually get affected by them :D

  63. zidaryn

    0:40 Hey, I think I saw you in Golden Eye!!

  64. OnlyARide

    So does this mean that some of the other pulsars we’ve discovered have been non-binary…? πŸ€”

  65. bradwatson7324

    Aliens are masters at making artificial beacons appear to be natural phenomena. It’s like my pappy used to say: Never underestimate an alien πŸ‘½.

  66. Kathleen Sisco

    Gravitation waves are ‘discovered’ BECAUSE the prediction was/is a foundational requirement for Einsteinian Relativity.

  67. stvp68

    Yay, grad students!!!

  68. Adam Specht

    ‘The sucker’ huh? Oh the scishow crew… hah.

  69. zack

    amazing video πŸ’žπŸ§‘πŸ§‘πŸ’›πŸ’›πŸ’›πŸ’›πŸ’›πŸ’›πŸ’›πŸ’›πŸ§‘

  70. zack

    my nose is hard

  71. Ryan Hines

    I think I understood about 75% of that!

  72. Ediranii

    Russel? BS That’s Eber from HardwareCanucks

  73. Dr. Rich

    Well done

  74. kkg T

    What is happening with the tabby star?

  75. dollarsignfrodofan77

    Would it be possible to use LIGO or similar machine to detect small local gravitational waves? Might find dem aliens…

  76. quest 77051

    so even though i am moving through space time, i am part of space time. wow.

  77. Dan Walton

    That’s where I killed Alec in Goldeneye

  78. First Last

    Megaman intro too cool

  79. zack


  80. sanjuansteve

    How similar are the jets from the poles of pulsars to Hawking radiation from the poles of black holes? Thx

  81. Meebs

    Shower thought: If there are gravitational “waves”, could there be such a thing as a gravitational “tsunami”? Or gravitational “tides”? I wish I was smart enough to even know how to attempt to answer that question myself. I don’t even know enough to know if that is a dumb question to ask in the first place. But Im still curious and I like to ponder weird questions.

  82. Dakota Downey

    “gravitational wave astronomy astronomy”

  83. Alexagrigorieff

    Do gravitational waves from a dual system carry angular momentum away?

  84. Kaylee Grace

    i really appreciate how you guys gave credit to Jocelyn Bell-Burnell in this video! oftentimes contributions from women in science are ignored and it makes me really happy that a channel as big as this one would make a point to recognize her for what she did :)

  85. Yati Acharya

    Amazing info!
    And your voice is very good!

  86. Kathleen Sisco

    In as much as neutron stars and pulsars are MAGNETARS, the waves they are emitting are solitons.

  87. VΓ΅ ThΓ‘i SΖ‘n

    Imagine a new kind of power panel that turns gravitational waves to electricity!
    … coming up next century.

  88. HenryManson

    the saddest thing about this is “it wasnt aliens”!

  89. holo basghettini

    even the pulsar has a companion and i’m still single😩

  90. Charles-A Rovira

    That event opened up an entirely new realm of astronomy. Never had observations been so *existential.* Just being massive and moving through space is enough to make an object detectable.

  91. Snippy Cutwell

    My favorite dead star is Elvis

  92. David Lazarus

    What is incredible is that accidental discoveries also lead to the the detection of the microwave background. These little accidents lead science in whole new directions.

  93. SlyPearTree

    The detection of gravitational waves was four years ago? I could have sworn it was this year. I have a love hate relationship on how time seem to compress more the older I become. The hate part is that I find it harder and harder to keep up, the love part is that I always feel that progress is too slow anyway. It’s a paradox in my brain.

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