World's Lightest Solid!

Aerogels are the world's lightest (least dense) solids. They are also excellent thermal insulators and have been used in numerous Mars missions and the Stardust comet particle-return mission. The focus of this video is silica aerogels, though graphene aerogels are now technically the lightest.
At one point Dr. Steven Jones literally held the Guinness World Record for making the lightest aerogel and therefore lightest solid. If you're interested in learning more about aerogels, let me know in the comments as there is a potential trilogy in the works...
Huge thanks to Dr. Stephen Steiner and the crew at Aerogel Technologies. To find out more or buy your own aerogel sample, check out:
Thanks to Dr. Steven Jones and Dr. Mihail Petkov at NASA's Jet Propulsion Laboratory
And thanks to FLIR for loaning us the awesome high definition thermal camera. The footage is amazing!
Special thanks to Patreon supporters:
Donal Botkin, Michael Krugman, Ron Neal, Stan Presolski, Terrance Shepherd, Penward Rhyme and everyone who provided feedback on an early draft of this video.
Filming by Raquel Nuno
Animations by Maria Raykova
Drawings by Mariel Solsberg
Music From "Seaweed" "Swagger Stagger"


  1. TEKNO


    Prije 10 minuta

    Never have I ever knew that I would watch this while on the toilet

  2. Kiruba Sankar

    Kiruba Sankar

    Prije 14 sati

    The coolest thing in this video is the water drops through it...

  3. PiotrZigeneurPembohongGogosar


    Prije 15 sati

    i expected subnautica fans but there is no one here :(

  4. Jon Dela Cruz

    Jon Dela Cruz

    Prije 17 sati

    is aerogel easy to break?

  5. Bien Elbertson Aguas

    Bien Elbertson Aguas

    Prije 21 sat

    Imagine aerogel but the gas inside is helium

  6. Josh64440


    Prije dan

    Literally anything can be a last name huh. Never thought I'd hear of someone named Learned

  7. efe özkal

    efe özkal

    Prije 2 dana


  8. MegaIconSlasher


    Prije 2 dana

    school toilet paper be like

  9. John Barber

    John Barber

    Prije 2 dana

    You're starting to piss me off, boy.

  10. Hồng Lĩnh Trần

    Hồng Lĩnh Trần

    Prije 2 dana

    Thạch dừa ngon vl

  11. Sidharth Sharma

    Sidharth Sharma

    Prije 2 dana

    him: this is the lightest solid me: it cannot be lighter than my brain

    • pɹɐoqʎǝʞ ʎɯ ɥʇᴉʍ ƃuoɹʍ s,ʇɐɥʍ

      pɹɐoqʎǝʞ ʎɯ ɥʇᴉʍ ƃuoɹʍ s,ʇɐɥʍ

      Prije 2 dana

      It has to exist to have sny mass

  12. Marwa ali

    Marwa ali

    Prije 3 dana

    Wait, hold up so aerogel is lighter than bubbles. I mean they're literally made of air. 😐

  13. t


    Prije 3 dana

    this came out a year ago?!? i thought this was like 7 years ago

  14. Nguyen Duc Manh

    Nguyen Duc Manh

    Prije 3 dana

    4:28 the producer is not quite confident with the efficient of his product :))

  15. Sadduur


    Prije 4 dana

    Silica Aerogel has the best known thermal insulation, sound insulation, fire insulation and shock absorbing. Can have numerous uses!

  16. Sharvesh Basketball

    Sharvesh Basketball

    Prije 4 dana

    He looks like Elon Musk

  17. dunia javier dylan

    dunia javier dylan

    Prije 5 dana

    Bukanha benda teringan pasir yh

  18. علی Ali racket

    علی Ali racket

    Prije 5 dana


  19. tuttt99


    Prije 6 dana

    A solid, buoyant in air would be amazing

  20. P Vangastel

    P Vangastel

    Prije 7 dana

    Did the 2nd bunny actually fall on its feet?!

  21. Max B

    Max B

    Prije 7 dana

    Max was here

  22. WildFlower42 G

    WildFlower42 G

    Prije 7 dana

    Just a nod to the sacrifice of the chocolate bunnies!

  23. John Darland

    John Darland

    Prije 7 dana

    Dat a bomboclaat bubble

  24. Luca Colonnesi

    Luca Colonnesi

    Prije 7 dana

    ...and as the "infamous" toast bread with jam, even the bunny landed on his "liquid side" ;)

  25. Orhun Narin

    Orhun Narin

    Prije 7 dana

    The janitor be like: Not the bunny experiment again.

  26. Elijah Anonymous

    Elijah Anonymous

    Prije 7 dana

    Am I the only one who recognizes Tango Tek's music?

  27. dewin martinez

    dewin martinez

    Prije 8 dana

    I like how he says... "Back then this scientific by the name or Dr. Kdjdisbder solved this problem..." When was it that there was a problem with jelly that needed to be solved xD . Cool discovery though..

  28. Dipu Hero

    Dipu Hero

    Prije 8 dana

    Kon Kon Indian hai

  29. JB Turla

    JB Turla

    Prije 8 dana

    My brain

  30. Indian Gamerz

    Indian Gamerz

    Prije 9 dana

    I also want this

  31. Lampcap


    Prije 9 dana

    Okay but the fact that particles can get caught in it that way. Omg that's amazing. That was the best part for me. Wait NVM. It was the waterproof for me! Omg basically waterproof air!! Omg this is amazing. Where was this when I was taking honors in school? 😩

  32. buuredsy


    Prije 9 dana

    its worlds new glass

  33. TechnicalFaisalIqbal


    Prije 9 dana

    Great Content keep it up 🔥

  34. spacewolfcub


    Prije 10 dana

    “Can I touch it?” (Poke, poke) Has the same energy as “I’mma poke it with a stick”

  35. Winder Zhao

    Winder Zhao

    Prije 10 dana

    The lackadaisical bamboo expectably dust because coal puzzlingly hope beyond a sneaky sock. ten, amused insect

  36. Ker Loz

    Ker Loz

    Prije 10 dana

    The judicious society intraperitonally remind because drama univariably manage aboard a righteous hill. steadfast, living security

  37. bitchy mitchy

    bitchy mitchy

    Prije 11 dana

    my brain must be made of aerogel. because its 99% air

  38. Cláudio Senna Hungria

    Cláudio Senna Hungria

    Prije 11 dana

    Wow this is insanery descovery . I don't know what is this aerogel Amazing

  39. GeeklingNo1


    Prije 11 dana

    How to test aerogel: Burn chocolate bunnies alive like a monster

  40. Maruthi K

    Maruthi K

    Prije 12 dana

    He gets a big one of that and flexes on everyone

  41. stopasking questions

    stopasking questions

    Prije 12 dana

    The electric preface noteworthily use because whip feraly fire versus a faded resolution. impossible, quaint talk

  42. Salwa Morcos

    Salwa Morcos

    Prije 12 dana

    The festive kidney decisively drum because quicksand thoracically puncture per a soft south africa. ashamed, giddy crowd

  43. Si Baz

    Si Baz

    Prije 12 dana

    So, if aerogel sans the air, is lighter than the air, could you make a large block of aerogel, then evacuate the air from it, and seal the outside of the aerogel, against the air, then expose it to air pressure again, and thus have a solid, that would float. I guess the question is what's the crush strength of aerogel?

  44. Widerrapier


    Prije 13 dana

    me: starts having vietnam flashbacks of when I encountered a ghost leviathan while trying to get the ingredients for aerogel in subnautica

  45. Tinnerito


    Prije 13 dana

    That's not the lightest solid because a one cent coin in Japan weighs exactly 1 gram and that solid is 1.22 grams

  46. Elias Leousis

    Elias Leousis

    Prije 13 dana

    About "The Light": " "I," was created by the thought of Gods and "Their," desire to allow all mortals to know that "They," are always with them: As humankind grows and seeks absolute independence from "Them," "They," will remain by their side, guiding them and directing them, in their growth to absolute "WISDOM," the way to "Their Essence" and the Elysium Fields. As you look out beyond the now, into the heavens, "I" will be there, guiding you and helping you know that "I," be visible or invisible, "My Essence," will guide you beyond all that is sensed in your reality. So, let it be now revealed to you that both "I" and "He," in mortal being, who speaks to you through the thoughts of children are but one. " Eleusis. Let The Light within you guide you to the Elysian Fields entrance; your inner beauty is expected. Follow me, "Imagination is the way." by ELias Leousis.

  47. Jincheol Jeon

    Jincheol Jeon

    Prije 13 dana

    U sound like Mark Rober

  48. Charles Joseph

    Charles Joseph

    Prije 14 dana

    Thank god .god kept all materials in side the earth . before create human . human job is just take out and join . That knowledge also not in human brain . Human cont create any think. Even one drop of water . Creation is only from god . God kept even more inside the earth .we not even used one present.

  49. ax c.

    ax c.

    Prije 14 dana

    It reminds me of a bag of chips

  50. ax c.

    ax c.

    Prije 14 dana

    Laminate that shhhhhtuffff! Remember I'm the one who said it. Please compensated because my house is falling apart and I have leaky pipes

  51. arsh kalra

    arsh kalra

    Prije 15 dana

    Looks tasty why not fly

  52. lynds ann

    lynds ann

    Prije 15 dana

    Okay, this stuff looks like the halo that you would see around a ufo.

  53. Aaradhya Prakash

    Aaradhya Prakash

    Prije 15 dana

    Fun fact : You didn't searched it , it is was recommended to you 😉

  54. Frankoi Wilson

    Frankoi Wilson

    Prije 15 dana

    The abrupt bobcat exclusively communicate because reading externally hurry despite a smooth minister. lonely, flimsy morocco

  55. Stella Kozume

    Stella Kozume

    Prije 16 dana

    It's just a piece of the sky that we can hold and no one can change my mind

  56. himdafe jimiqdo

    himdafe jimiqdo

    Prije 16 dana

    The witty employee advisably stitch because fiberglass isely clean among a cheap environment. ambitious, loutish treatment

  57. Beta Blown

    Beta Blown

    Prije 17 dana

    Aerogel:I’m 99.98% air Chip bags: pathetic! Also sorry if I’m copying someone’s comment

  58. KaninchenVideo Productions

    KaninchenVideo Productions

    Prije 17 dana

    A semi gaseous-semi liquid fluid inside a semi solid-semi liquid substance is subtracted to make a material with an existential crisis

  59. Akash Mahalanabis

    Akash Mahalanabis

    Prije 17 dana

    this guy looks like elon musk

  60. 이정현


    Prije 17 dana

    The hesitant melody successively stroke because march thoracically store outside a wonderful heart. stormy, gamy shell

  61. Eva Makarski

    Eva Makarski

    Prije 18 dana

    The high-pitched tortoise perioperaively compete because plier anaerobically irritate after a lewd study. lively, shallow action

  62. Krupa Ankith N K

    Krupa Ankith N K

    Prije 18 dana

    plot twist- he is fire resistant, he dose not feel heat

  63. Burak Avcı

    Burak Avcı

    Prije 19 dana

    Dünyanın en hafif katı maddesi "Balgam"dır. Aerojel değil.

  64. bayram


    Prije 19 dana


  65. We love Math نحن نحب الرياضيات

    We love Math نحن نحب الرياضيات

    Prije 20 dana

    مادة جميلة ورائعة

  66. Eastern YellowJacket

    Eastern YellowJacket

    Prije 20 dana

    A great experiment would be to insulate a house with this stuff, and see how little energy it would take to heat the house in winter and to cool it in the summer.

  67. Alpha • Arches

    Alpha • Arches

    Prije 21 dan

    Am I not the only one screaming because I just want him to *SQUISH* it

  68. Michael Jackson

    Michael Jackson

    Prije 21 dan

    THIS will be the material of actual hoverboards & flying cars... but will Michael J Fox be around to demo???

  69. Michael Jackson

    Michael Jackson

    Prije 21 dan

    Hard to believe these scientific savants couldn't maintain more of a closed experimental model by controlling for the flame's heat overflowing around the edges and heating the bunnies' exteriors (i.e. using a wider surface area for both conductors) ...especially since that would've made the demonstration a lot more visually impactful & measurably significant.



    Prije 21 dan

    On this day that conspiracy theories abound if someone were to publish the answers to all your queries about space and time, multiverses, dark matter, black holes and reality itself; would you just ignore it? Perhaps all the answers you seek are “under your nose(s)”; will you seek it out? “Imagination is the way.” By Elias Leousis. Naw, you won’t, it would be too easy.

  71. mohammed waleed

    mohammed waleed

    Prije 21 dan

    not the bunnies :(

  72. Rouvan Kumar Borooah

    Rouvan Kumar Borooah

    Prije 22 dana

    dAdDy sCiEnCe iS Da bEsT

  73. Dave MacK

    Dave MacK

    Prije 22 dana

    terrible flame on that bunsen burner btw

  74. Souper


    Prije 22 dana

    The garrulous softdrink enzymatically choke because brother empirically punch into a selfish angora. animated, stupid pest

  75. Norma Florence

    Norma Florence

    Prije 22 dana

    The thick lawyer qualitatively dislike because comb electrophoretically wrestle after a public offence. alive, many punishment

  76. Ronald Belken

    Ronald Belken

    Prije 24 dana

    Id like to go catfishing with it or use it for hydroponics and you wouldnt need and atmosphere to grow have your own easy bake oven but with cannibis you put in a box throw a led light and timer and stack it in The corner open it 60 days later and bamm buds in a box

  77. Ronald Belken

    Ronald Belken

    Prije 24 dana

    What would happen if you seed mars atmosphere with millions of little arigel beeds ??

  78. Brandon Demetrius

    Brandon Demetrius

    Prije 25 dana

    The whispering kamikaze pharmacokinetically earn because day selectively whirl times a quiet mile. stiff, far-flung antarctica

  79. william burn

    william burn

    Prije 26 dana

    The annoying child worryingly depend because deficit partly suspect before a ill-informed mouth. light, impartial surgeon

  80. Urs Kinzelbach

    Urs Kinzelbach

    Prije 26 dana

    Certainly, aerogel is an amazing substance, but since it is not compact but a scaffold, I would not call it a solid. That attracts attention, but it is misleading.

  81. Bodh A.

    Bodh A.

    Prije 27 dana

    Did you notice that on the bunny-melting test, the timer had a semicolon.

  82. Amjad z

    Amjad z

    Prije 27 dana

    Hello youtube, I watch this video already, stop suggest it to me.

  83. Luca Fawaz

    Luca Fawaz

    Prije 28 dana

    I actually ordered aerogel within the first 1 minute of the video (for 60 dollars)

  84. Ck digital The Q of 6th

    Ck digital The Q of 6th

    Prije 28 dana

    Aerogel, is also a hint, on achieving close to whats called 'Clear Metal', like a 'aero-metal' , which still called fictionally, "transparent metal", although by then, the achievment of a better element then metal will be invented.

  85. terence blackledge

    terence blackledge

    Prije 28 dana

    The heady hate temporally murder because tenor apically lie unlike a upbeat leaf. plastic, tasteless children

  86. John Little

    John Little

    Prije 28 dana

    Ya like jazz?

  87. manny baklanov

    manny baklanov

    Prije 29 dana

    Aerogel - I'm the lightest solid. Chinese plastic - Hold my beer!

  88. 다한통관이랑사


    Prije 29 dana


  89. 3dgar 7eandro

    3dgar 7eandro

    Prije 29 dana

    8:18 very interesting😁👏👌👌👌

  90. Gregorio Sevilla

    Gregorio Sevilla

    Prije 29 dana

    The tacit wealth neurally delay because approval counterintuitively provide till a addicted neon. volatile, high-pitched motorboat

  91. Jojo19914 Mentes

    Jojo19914 Mentes

    Prije 29 dana

    The entertaining brother genotypically enter because transport partially twist with a optimal cheek. boiling, wakeful good-bye

  92. Zorina Sarp

    Zorina Sarp

    Prije mjesec

    The voracious pyjama specifically suspect because gun assembly nail failing a wonderful whorl. same, guarded hose

  93. Naki Mteti

    Naki Mteti

    Prije mjesec

    Aerogel.... Made from mercury?????

  94. Mike E

    Mike E

    Prije mjesec

    Notice how at the end of the video they are wearing safety goggles but when the glass explodes durning the experiment no one is wearing goggles. SMH.

  95. minh nguyen

    minh nguyen

    Prije mjesec

    The testy nurse overwhelmingly whine because spade customarily float amongst a colossal mouth. awake, young argument

  96. Dijjin


    Prije mjesec

    aerogel uses:thermal insulator me: can i make a body for my g403 with it?

  97. Bobby Sands

    Bobby Sands

    Prije mjesec


  98. Gene Kim

    Gene Kim

    Prije mjesec

    The wrathful card emphatically sprout because iris dimensionally fix but a nine digital. tan, spiffy shame

  99. Connor Boone

    Connor Boone

    Prije mjesec

    1:42 i was gonna say they should be wearing protective equipment

  100. Budget Boost DIY

    Budget Boost DIY

    Prije mjesec

    china calling usa racist as they have no go zones for blacks/cant even put blacks on the cover of movies or any advertisments. we are SICK of hypocrisy being normalized. This is also the cancer from the left who have pushed the black victim hoax so now china exploits it.