Spring break 2013: how 'bout outer space?
Travelling to space might not be as far as you think it is. Brad Edwards of
Highlift Systems, Seattle proposes to build an elevator to outer space using carbon nanotubes in a decade or so. The nanotubes are cylinders of carbon molecules that are extremely small and unbelievably strong. The molecules could be woven into a fabric to create a ribbon that would be around 3 feet wide and stretch 62,000 miles into space (that's nearly one quarter the way to the moon) and could transport people and spacecraft at a fraction of the cost and danger associated with today's spaceflights.
Unlike the
Great Indian Rope Trick, this ribbon doesn't need any magic to stay upright in space. It has a counter weight at the other end which pulls on the ribbon due to the rotation of the earth (Imagine tying a stone to the end of a string and rotating it above your head) and keeps it taut.
The climbers would be powered by free-electron lasers which would be beamed on photocells on the undersides of the climbers and push them up the ribbon. A trip up would probably take a couple of weeks, but what the heck, at $10 a pound of weight, it will probably be worth it.
The scheme for building the ribbon, launching it to space and moving the climbers up the supercarbon elevator reads almost like science fiction, or something out of a hollywood movie, but like most inventions that change the way we think of the future, this one will be considered impossible till someone pulls it off.
Wired Magazine has the complete story.
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