|Posted: 2012-June-10 at 3:25pm | IP Logged
It's not a matter of the balloon being airtight. At some point , there simply is not going to be any air for the balloon to be less dense than. It's not going to to explode either. Weather balloons go up there regularly, and they don't explode.
Any balloon capable of hoisting a rocket capable of leaving the atmosphere would simply be too large to use. Rockets weigh tens of thousands, if not hundreds of thousands, of kilograms/pounds.
You would somewhere around 303 cubic kilometers of helium to lift a Falcon 9 rocket, for example.
A balloon just would not work.
"Failure is always an option" - Adam Savage, Mythbusters
Words to live by.
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