How Do Hot Air Balloons Stay Up?

↓ More info and sources below ↓

We uploaded another version of this video on 11/9 but it had a big mistake in it. So we fixed it. This version is full of 100% real science! Sorry for the error.

Special thanks to:

Have an idea for an episode or an amazing science question you want answered? Leave a comment or check us out at the links below!
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It’s Okay To Be Smart is written and hosted by Joe Hanson, Ph.D.
Follow me on Twitter: @jtotheizzoe
Email me: itsokaytobesmart AT gmail DOT com

Joe Hanson - Creator/Host/Writer
Joe Nicolosi - Director
Amanda Fox - Producer, Spotzen Inc.
Kate Eads - Producer
Andrew Matthews - Editing/Motion Graphics/Animation
Katie Graham - Camera
John Knudsen - Gaffer

Theme music: “Ouroboros” by Kevin MacLeod

Other music via APM
Stock images from Shutterstock, stock footage from Videoblocks (unless otherwise noted)

[besmart]

I uploaded a version of this video yesterday, but it had a big mistake in it, so we fixed it. But the good news is that this version is 100% full of good science. Enjoy!

[SureyD]

In the comment section of the outdated video, I made a "nooo" comment on the words "oxygen molecule", and it can still be seen in the pastebin.
However, my response to the replies confirming that O2 is indeed a molecule, got lost. I responded something along the lines of "I believe that it's called "dioxygen" because there are 2 oxygen atoms" (the atoms forming the dioxygen molecule).

It was brave to edit a whole portion of the video for that mistake. I applaud you for that.

[EugeneKhutoryansky]

Thanks for making the corrected version of the video.

[MikaylaSnow]

It was so nice meeting you at the balloon fiesta Joe! I love how it's taken us both this long to finally upload our videos 😂

[addisoneng]

I have a tendency of smiling in spite of myself when I watch these videos. You're making the world a better place, keep it up!

[xannamarzx]

You get a like because of the way you did your sponsor! :D

[dannggg]

wow i have a better understanding of temperature and pressure from this video thanks!!! was so confused in physcis 101 and 102

[halamutaz]

Made physics so much fun! I always thought physics can be fun it just needed someone like you to clarify it and make it look so. Thanks man this was really a matter of understand or death for me as a student .love from Sudan

[amanadaababy]

My 3 year old daughter is obsessed with hot air balloons and how they work and we watch this video at least twice a day 🙌🏼❤️

[ndrdst]

Also thanks for providing subtitles for that balloon guy Doug. He was terribly hard to understand, what with all that perfectly accent free english he spoke at an audible volume. Now if I only knew what the host said, I didn't get any of it.

[SuRpLu]

It was awesome meeting you at AIBF and talking to you about cameras! 😁

[StephenTack]

Oh right, the old "weaker gravity" mental trap. I thought that was fishy yesterday, good job fixing it!

[danielaltherr]

I hope you liked Albuquerque and the Balloon Festival! I love your videos!

[LawffleCopter]

Glad to see you were in ABQ! Wish I could have gone this year :(

[deniz]

i love this video so much for so many reasons

[ericbartol]

I hope you enjoyed my home town, Joe! We had great weather for you this year. Come back soon! (and stay curious! ;-) )

[Noahandallison]

Thank you. Fascinating. Still having trouble finding any info on how ancient balloons kept all that heat going without tanks.

[RobloxHacksForMac]

Roses are red,
Violets are blue,






Get in the van

[demis.farrugia]

Beautifully presented!

Thank you, just subscribed! 🌟

[christinesanderson]

I lost it at the fire part xD I'm always happy to see these videos, they're so good