| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| ryangaia | "Thank you @cfastie for answering this and mentioning that that helium "does not have much thermal mass". The temperature was my main hypothesis. No..." | Read more » | over 5 years ago | |||
| cfastie | "Yes, any gas will be less dense when it is hotter and therefore will have more lift. If the gas inside the balloon is the same as the gas outside (..." | Read more » | over 5 years ago |