(Derek Lyons) writes:
It occurs to me that the biggest obstacle, next to money, will be the
environmentalists. Building the plants and launch facilities is sure
to attract their attention, not to mention the vast amount of
combustion products dumped into the atmosphere.

The biggest bottleneck in operations will be transport I suspect.

A quick web search indicates that the US burns 131 billion gallons of
gasoline in one year. The Saturn V first stage "only" held 203,000
gallons of kerosene. That means it would take 645,000 Saturn V first
stages to equal the amount of gasoline burned in the US each year.

The reality is that you could scale up operations of launch vehicles by
several orders of magnitude before there is any significant
environmental impact above and beyond what we're already doing today.

Jeff
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