Veritasium: World's Lightest Solid!


Published on: Friday, May 31, 2019

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"


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  • kirby99


     23 hours ago

    Still not light as the stack of all my passing tests

  • Jennice09


     2 days ago

    재밌는것 같은데 문송합니다 ㅠㅠ

  • 깡깡짱


     2 days ago

    ' 여기서 공기를빼면 공기보다 가벼워집니다..' 나만이해안가나;;

  • HappyG


     2 days ago

    1:40 The lack of PPE with exploding glass chunks is setting off all of my alarm bells rn 😅

  • [*무지개빛*]뀸


     3 days ago

    겁나 비쌀것같다

  • JH C

    JH C

     4 days ago

    In Korea
    Aerogel = 에어로겔
    Aerosol = 에어로졸

  • 고냥이


     4 days ago

    솜사탕도 진짜 엄청 가벼운뎅

  • 뿡뽀쨕


     5 days ago

    내가 왜 이걸보고잇지..근데 신기 이쁘게 생김..

  • Kpop Lover

    Kpop Lover

     5 days ago

    Aerogel: 99:98% air
    Lay's chips: 99:99% air

  • Hassaan Bader

    Hassaan Bader

     5 days ago

    Melting bunny made my mouth watered xD

  • 로지roji


     6 days ago


  • 가뇽이


     6 days ago +1

    다 모르겠고 나도 가벼워지고싶다

  • byungchul Kim

    byungchul Kim

     6 days ago

    맨체스터 시티의 다비드실바 느낌

  • Su hyeon Yang

    Su hyeon Yang

     6 days ago

    와 이런것도 있구나 대박신기하네

  • Lionel Ind

    Lionel Ind

     1 weeks ago

    can Aerogel be 3D printed?

  • Gaurav Jms

    Gaurav Jms

     1 weeks ago

    Lays be like:-LOL Noobs!

  • min yoongi jjang jjang man boong boong

    min yoongi jjang jjang man boong boong

     1 weeks ago

    Is that a solid?

  • haruka


     1 weeks ago


  • xhakxxh _

    xhakxxh _

     1 weeks ago

    똑똑이들아 뭔소리임 에어조얼?..

  • 김나


     1 weeks ago +6

    나: 아이고 자야겄따

    유튜브: 너 세상에서 가장 가벼운 고체 본적있냐?(쓱)