World’s Lightest Solid!

May 31, 2019 by 28 Comments

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”


28 Replies to “World’s Lightest Solid!”

  1. People will be kicking themselves in a few years if they miss this opportunity to buy Bitcoin in this Covid-19 discounts!

  2. andy lai says:

    so, it's NOT really a solid. dickhead.

  3. Where did they get this assclown narrator?

  4. wow, this stuff should be slathered on the houses in California to fireproof them from the annual fires they seem to have!

  5. LightGesture says:

    So, we know you've got things to do… But let me recommend you watch this 15 minute video about "the world's lightest solid."……

  6. Ashish Garg says:

    Lays is more lighter than airgel 😂

  7. Johannes says:

    This may be the start of an aerogel revolution…

  8. veteran navy says:

    Can you make a condom out of it?

  9. Ashish says:

    lays be like are u challenging me 😏

  10. The whole video i wanted to crush that thing and see what happens

  11. Haily Doe says:

    Teacher: "Never eat anything in the lab"
    Me: 6:14

  12. Why we still don't see this in our daily life?!

  13. My god, if you train more and take your tshirt off… you could be Davey Wavey xD

  14. Janerey14 says:

    So, what about the cotton?

  15. Sayak Pal says:

    Super interesting stuff. Can be used extensively in future.

  16. kalpak t says:

    dude didn't ur mother teach u-WASH UR HANDS xD Mind blowing video tho!

  17. toff says:

    Vous avez tous tellement sucer Rich tritschler il y'a dix mois que ça en devient gênant
    Est ce l'homme le plus détesté de YT? en tout cas vous avez fait fondre facilement l'iceberg du Titanic avec vos conneries de dégénérés anglophones

  18. Wendy Chavez says:

    Veritasium: "Aerogel is 99.8% air"

    Lays chips: cough

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  20. Insulation is the key to bring a greatly reduced energy future.

  21. evrything is most made of air but arogel has the most

  22. Oliver Dowey says:

    No not the bunny's 🙁

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