World's Lightest Solid!

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  • Published on:  Friday, May 31, 2019
  • 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"
  • Source:


  • 타마


     4 hours ago

    에어로졸이랑 에어로젤이 같은건가요? 전 다른걸로 알고 있는데요...

  • MosquitoHunter


     5 hours ago

    I wonder if this would make effective insulation for firefighting gear?

  • puru pokhrel

    puru pokhrel

     6 hours ago

    Fire fighters should wear suits of air jell if heat diffuses through that slow.

  • Kushman 420 TV

    Kushman 420 TV

     7 hours ago

    Airogell bullets

  • Original Man

    Original Man

     9 hours ago

    So why the hell were we using asbestos .

  • Antler Assassins TV- Bowhunting Television

    Antler Assassins TV- Bowhunting Television

     9 hours ago

    Trilogy renamed:
    This guys Hard on for Aerogel

  • E hhh

    E hhh

     12 hours ago

    Great informational video

  • Eric Booth

    Eric Booth

     14 hours ago

    Anybody else hear the Halo Reach music around 8:15? I’ve also heard a TV show use the same music. I guess Bungie just remixed a sample tune.

  • Alex Cooke

    Alex Cooke

     14 hours ago

    It should be possible to print a house using this and another substance.

  • Alannah Frederic!

    Alannah Frederic!

     15 hours ago

    Steven: this is the lightest soild
    Me: so you froze your hot breath

  • True Janey  Sue

    True Janey Sue

     15 hours ago

    Now that's cool!

  • It'sAJoker


     15 hours ago

    I thought a paper clip was the lightest solid

  • Burak & Gizem

    Burak & Gizem

     16 hours ago

    abi bu işi tam anlamı ile yaptığınızı düşünmüyorum şöyleki dünyanın düz olduğu şu zamanlarda tepsi değil bak düz dümdüz olduğu vakitler aqrasında bu dediğinin mantığının hiçbir özverili yanı olmamasına rağmen amma velakin katha selakin yani aslında demem o ki şu vakitlerde burçlar ve dönenge zamanlarında basit olayların çerçevesinde dönen birtakım o9laylar esnasında senin bu yaptığın deneye ne sikemne yaradı

  • Korekshan Radio

    Korekshan Radio

     16 hours ago

    Imagine this material in the state of a condom

  • Flofy387


     19 hours ago

    Amazing what science brings up... :D

  • daniel ash

    daniel ash

     22 hours ago

    Aria gel housings?

  • Micah Jones

    Micah Jones

     22 hours ago

    the structure looks like subspace

  • 주의사항 Park

    주의사항 Park

     23 hours ago

    hmm interesthing

  • 어텀



    어휴.. 내가 유튜브를 많이 보긴하나보다.. 이런 과학적인 것 까지 보고있네...

  • Sam Hay

    Sam Hay


    Can I build a flying submersible r.o.v. out of this substance. Would make a great delta wing