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[Elevating to the Stars: The Future of Space Transportation]-[An Elevator to the Stars! (Encore - 10/7/19)]

Wow in the World · B1 · 2019-10-07

Preschool Enlightenment
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📋 Summary

The Concept of the Space Elevator

In this episode of Wow in the World, hosts Mindy and Guy Raz embark on an adventure to explore the fascinating scientific concept of a "space elevator." While Guy Raz is initially preoccupied with his passion for listening to "elevator music" by the band The Elevates, the conversation quickly shifts toward a groundbreaking engineering proposal by the Japan Aerospace Exploration Agency (JAXA). The central premise is that instead of relying exclusively on traditional rockets, humanity could potentially reach space via a massive cable-based structure.

Historical Roots and Engineering Challenges

Guy Raz traces the origin of this idea back to 1895, when Russian scientist Konstantin Tsiolkovsky was inspired by the design of the Eiffel Tower. Tsiolkovsky envisioned a structure that could reach into the heavens, essentially acting as a permanent tether between Earth and space.

Technically, the structure would consist of a "carbon nanotube composite ribbon"—a material described as incredibly strong yet exceptionally light. This cable would extend from a platform on Earth all the way into orbit, functioning similarly to a satellite. The primary motivation for this ambitious project is economic efficiency. Currently, sending cargo to the International Space Station via rocket costs approximately $43,000 per pound. JAXA estimates that a space elevator could reduce this cost to as little as $100 per pound, revolutionizing how we transport supplies and equipment into orbit.

Testing the Future: Mini-Satellites and 2050 Goals

Though the concept sounds like science fiction, researchers at Shizuka University and JAXA are already conducting practical tests. The current testing phase involves sending two mini-satellites into space, connected by a 10-meter cable. These satellites are designed to move a "mini elevator car"—roughly the size of a matchbox—back and forth along the tether. This experiment is crucial for understanding how mechanical systems operate in low-gravity environments.

While the full-scale project is envisioned to reach 60,000 miles above the Earth, experts suggest that an operational space elevator may not be ready until 2050. Despite the long timeline, the project represents a significant leap in aerospace engineering, aiming to create the longest structure on the planet and open up a new era of space exploration.

Conclusion

The episode highlights the power of "wow" moments—the curiosity that drives scientists to solve complex problems like the high cost of space travel. By blending humor with educational insights, Mindy and Guy Raz illustrate that what seems like a simple ride in an elevator today could eventually evolve into the technology that carries humanity to the stars.

🎯Key Sentences

1
I guess I'm just hoping someone will come along and offer to rebuild it for me.
2
I'm pretty sure it's the only elevator music magazine in America.
3
Such a time saver.
4
You've got to stick with the classics.
5
Kind of looks like a boring old concrete office building.
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📝Key Phrases

1
music to your ears
2
get on with the show
3
can I interest you in
4
in the meantime
5
hold the phone
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📖 Transcript

Grownups, Wondery Plus subscribers can listen to Wow in the World early and ad-free right now.
Join Wondery Plus in the Wondery app or Wondery Kids Plus on Apple Podcasts.
Hey, Wowzer fans, Mindy here.
And before we start the show, I gotta let you know that this November, with a special new episode featuring our friends at Circle Round and Terrestrials on Radiolab for Kids,
And don't miss when Elmo from Sesame Street stops by Wow in the World to make us all belly laugh on November 24th.
Oh, but that's not all, Reg.

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