One is that atmospheric pressure is dramatically reduced at high altitudes, so a helium balloon expands as it rises and eventually explodes. If you inflate a balloon beyond its limits at room ...

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The massive helium balloons that will float through New York ... one of dozens of people helping inflate the stars of ...

The first super pressure balloon flight of NASA's New Zealand Balloon Campaign reached its float altitude after lifting off ...

Agent has again emerged at the center stage of hilarious reactions after a video of him trying to fly with 250 helium-filled balloons surfaced online.

A machine connected to the balloon sits outside of the body, and delivers helium or carbon dioxide gas to inflate the balloon ...