English 箭头
Podcast Cover

[The Science of Space Suits: From Cosmic Protection to Future Technology]-[Spaced Out Pen Pal - Part 1]

Wow in the World · B1 · 2018-03-05

Preschool Enlightenment
Or study on the web version

📋 Summary

The Dangers of the Final Frontier

In this episode, Mindy and Guy Raz explore the critical importance of specialized space suits, prompted by Guy Raz’s plan to visit a pen pal on the International Space Station (ISS). They highlight that space is a hostile environment, far beyond the need for everyday attire or even "fancy Saturn cufflinks." The primary threats in space include "cosmic radiation" and "space dust." These dust particles are not merely nuisances; they are "micrometeorites"—tiny bits of space rock that can travel at speeds up to "10,000 miles per hour." Because they move five times faster than a speeding bullet, these particles pose a lethal risk of puncturing a suit.

The Evolution and Functions of Space Suits

To survive, astronauts rely on sophisticated engineering. The hosts discuss the history of space wear, noting that early American suits used "aluminized nylon" to reflect "thermal radiation"—the energy from the sun that would otherwise cause an astronaut to overheat.

Modern astronauts utilize the "Extra Mobility Unit (EMU)," which has been the standard NASA suit since 1983. The EMU is a marvel of life-support technology, designed to:

  • Regulate Temperature: It protects the wearer from extreme cold, which can reach "minus 454.81 degrees Fahrenheit."
  • Maintain Air Quality: It provides oxygen while actively removing the "carbon dioxide" that astronauts breathe out, which would otherwise become deadly if allowed to accumulate inside the suit.
  • Protect Vision: The helmets feature a "gold-lined visor" that acts as a massive pair of sunglasses to shield eyes from intense sunlight.

Cutting-Edge Innovations: Liquid Armor and Shrink-Wrapping

The episode also delves into future technologies intended to make space exploration safer. Scientists at the University of Delaware have developed "liquid armor technology," which utilizes a "gloop" made of silica and polyethylene glycol. When this material, which coats the fabric of the suit, is struck by a fast-moving object, it instantly hardens to prevent punctures, then returns to a flexible liquid state once the impact passes. This innovation could eventually be used for "inflatable off-world habitats" or "space tents" on Mars. Additionally, researchers at MIT are experimenting with "shrink-wrapping" suits that use metal coils to tighten around an astronaut's body upon the press of a button, offering a more precise and functional fit for long-duration space travel.

Through their humorous journey to a futuristic space-themed store, Mindy and Guy Raz conclude that while new prototypes are exciting, the classic, tried-and-true EMU remains the gold standard for current space missions, proving that when it comes to life-saving technology, reliability is paramount.

🎯Key Sentences

1
It's going to be a November to remember.
2
But for now, let's get on with the show.
3
picking the winner is in your hands.
4
I happen to be a very popular guy.
5
I mean, I think she was just being polite.
Expand All

📝Key Phrases

1
music to your ears
2
get on with the show
3
show someone some love
4
for starters
5
make it snappy
Expand All

📖 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.

ListenLeap Brings You Into Real Context Learning

🎨 Interesting Content
🌍 Real Materials
📱 Listen Anytime
Or study on the web version