Imagine an elevator that could take you to space without the need for a rocket. It might sound like science fiction, but Japanese company Obayashi Corporation is working to make this a reality by 2025.
The Obayashi Corporation, renowned for building the Tokyo Skytree, aims to revolutionize space travel with their ambitious space elevator project. Their goal is to make space travel more affordable and accessible.
How Will the Space Elevator Work?
The space elevator will operate similarly to a conventional elevator but on a much grander scale. It will consist of tethers, a platform, a ballast, and a counterweight. According to educational website Explain That Stuff, traditional elevators use a counterweight to balance the platform, making it easier to move up and down.
For the space elevator, Obayashi plans to start the journey at an Earth Port located 10 km from the shore. This Earth Port will anchor the elevator’s cable to the planet and adjust its tension. It will also be responsible for transporting people and cargo to the Geostationary Orbit Station, which will be situated 36,000 km above the Earth.
Benefits and Challenges of the Space Elevator
The primary advantage of a space elevator is the significant reduction in cost for space travel. Traditional rockets require large amounts of fuel, which is heavy and costly. In contrast, the space elevator will use electromagnetic vehicles, known as climbers, powered by solar energy or microwaves, eliminating the need for onboard fuel.
ScienceAlert highlights that while SpaceX’s Falcon 9 costs about $1,227 per pound of cargo, the space elevator could reduce this to around $57 per pound.
However, there are considerable challenges. Building such a structure requires materials stronger and lighter than steel, like carbon nanotubes. Despite their potential, the longest carbon nanotube created so far is only two feet long. Moreover, the structure must withstand extreme weather conditions and will need to operate multiple trips to justify the investment.
Obayashi Corporation aims to have the space elevator operational by 2050, though this is an aspirational goal rather than a guaranteed deadline.