Traveling to space can be affordable by using elevators, which can be powered by nanotubes. However, if something hits the elevator, it could cause permanent floatation in space. Space elevators could revolutionize space travel with an estimated cost of $8 billion. NASA spends around $2.7 million on rocket fuel per minute to launch a rocket, which could be significantly reduced with the use of elevators.
Another solution is to use a string tied to a ball to create a centrifical force, which would work in space. The elevator would be positioned in the middle of the Atlantic Ocean, and the line would extend from there. The line would need to be perfectly synchronized with Earth's rotation to avoid breaking or wrapping around the Earth. Research using algebra has been conducted to find the ideal solution for this.