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Starrysky say: Balloons of rubber will expand in ever thinner air until they get so big they pop. The rubber falls back to earth where it might be eaten by wild animals. Those animals might die. Not nice.
Balloons of inflexible plastic aluminized sheet will leak eventually and fall back to be blown around in the wind. They might end up in tree branches, but sometimes drape across power wires and blow up transformers and cause blackouts. Not nice.
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Nyx say: I've had a few show up in my dryer. Think they were getting it on with the socks.
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Huh!? say: Good question: Watch its path! Path: https://www.youtube.com/watch?v=Qd6w7nfD...
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say: They are stuck at the top of the dome.
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PhotonX say: Yes, they go to the Moon, which as everyone knows is completely within Earth's atmosphere. There is a special crater where they accumulate so the secret Nazi base can easily collect them for insulation.
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CarolOklaNola say: The helium eventually works it's way through the balloon, the balloon deflates, and falls back to Earth., but no one knows where or cares much unless it causes an airplane to a drone or vehicles to crash. They DO NOT go to outer space and they definitely DO NOT go to the Moon because they do NOT have the escape velocity to get out of Earth's gravitational "well."..
Here's much better answer .
http://www.abc.net.au/science/surfingsci...
"...A helium-filled balloon can float very high up into the atmosphere, however, it cannot float up into outer space. The air in Earth's atmosphere gets thinner the higher up you go. The balloon can only rise up until the atmosphere surrounding it has the same weight as the helium in the balloon. This happens at about a height of 20 miles (32 kilometers) above Earth's surface. So, this is as far as a helium balloon can rise. Outer space starts somewhere around 600 miles (960 kilometers) above Earth's surface...."
http://coolcosmos.ipac.caltech.edu/ask/2...
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KingsChair1000 say: I think if they make it past ozone they will expand and pop.
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