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人工衛星へ汲取舟が行く話The Tale of the Honey Bucket Going to an Artificial Satellite

Jinkō Eisei e Kumitori Bune ga Iku Hanashi

by 中谷 宇吉郎 · Nakaya Ukichirō

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What happens to human waste in space? A humorous look at the future of sanitation.

About this text

A satirical essay on the practical problem of human waste disposal on future artificial satellites.

Read a sample in Japanese

本当ほんとうに人間にんげんが住すめる人工じんこう衛星えいせいが、いつごろ出来できるかは、いまのところまだわからない。しかし十じゅう年ねんぐらいのうちには出来できるだろうというのが、一般いっぱんの見通みとおしになっている。数すう年ねんの誤差ごさはあっても、いずれ出来できるには、ちがいないところでそうなった時ときに、一番いちばん困こまるのは排泄はいせつ物ぶつの処理しょりである。小便しょうべんの方ほうは再生さいせいして純じゅん水みずをとり、それを水みずとして使つかうとしても、カスが出でる。それと大便だいべんとは、何なんとかして捨すてなければならないが、人工じんこう衛星えいせいの軌道きどうの上うえでは捨すてるところがない。重力じゅうりょくのないところでは、ものを捨すてても、そのままいつまでも目めの前まえに浮ういている。そんなものがいつまでも窓まどの外そとに浮ういていられては困こまる。爆薬ばくやくをしこんで、外そとで爆発ばくはつさせても、そのチリは軌道きどうに近ちかいところを宇宙塵うちゅうじんとなって回まわることであろう。地球ちきゅうのまわりに、そんなもので「土星どせいの環たまき」ができるのは、どうもありがたくない。
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Source

This text comes from Aozora Bunko (青空文庫), the volunteer-run library of Japanese writing that is out of copyright. See this work on Aozora Bunko

Base edition (底本): 「中谷宇吉郎随筆選集第三巻」朝日新聞社
1966(昭和41)年10月20日第1刷発行
1966(昭和41)年10月30日第2刷発行

Typed in by 砂場清隆. Proofread by 木下聡.

Yomimaru has not changed the spelling or the wording.

The furigana are Yomimaru's.

What you'll learn

The author discusses the uncertain timeline for creating habitable artificial satellites, but believes it will happen within a decade. The main problem is waste disposal: since there is no gravity, waste floats and cannot be easily discarded. Proposed solutions like exploding it or sending it back to Earth are unsatisfactory. The best idea is to bring waste back to Earth on resupply ships, effectively turning them into 'night soil boats.' The author humorously concludes that even in the space age, we will still need such services.

Language difficultyAdvanced · 70/100

Key vocabulary

人工衛星じんこうえいせいartificial satellite
排泄物はいせつぶつexcrement, waste matter
汲取舟くみとりぶねnight soil boat, cesspool boat

Grammar points you'll meet

  • ~かどうか N4Indicates 'whether or not'. Used to express uncertainty about a choice or fact.
  • ~なければならない N3Must do something; obligation.
  • ~ては困る N2It's a problem if...; indicates that something is undesirable.

Cultural notes

  • Moon Viewing (月見)The text mentions 中秋の明月の晩 (mid-autumn moon viewing night), a traditional Japanese custom of admiring the full moon, often with seasonal foods and sake. The author humorously suggests that seeing a shooting star (which might be waste) during moon viewing would spoil the mood.
  • Night Soil Boats (汲取舟)Before modern sewage systems, human waste was collected from homes and transported by boats or carts to be used as fertilizer. The author wryly notes that even in the space age, we will still need such a service.

Try a comprehension question

What is the main problem discussed in the text regarding living in artificial satellites?

  1. Lack of water supply
  2. Waste disposal
  3. Communication issues
  4. Lack of gravity
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Sensei's reading tip

Pay attention to the logical progression: the author presents a problem (waste disposal in satellites) and evaluates several possible solutions.

Topics & grammar

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