Science and Technology 05

TOPIC

Can people really live on Mars?

Essay

◆ Pros
 I believe that people can really live on Mars because it meets the conditions. In order for human beings to live on Mars, there are three conditions to meet which are technology to send humans to Mars, temperature that people can adapt to, and the existence of air and water and foods.
 When it comes to technology to send humans to Mars, human technology has already reached the level. It is scientifically stated that Mars is close enough to send people to it when it is at perigee, which occurs every 2 years, and it would take less a year.
 When it comes to temperature, the average temperature on Mars is around minus 55 degrees Celsius which are similar to the temperature of South Pole so that people can adapt to it.
 When it comes to air and water and foods, at the present Mars doesn’t have air environment in which people can live, but it will by creating water and planting seeds. Mars has oxygen so that, if people bring hydrogen there, people can create water and plants will grow. If there are water and plants, Mars will be like Earth where people can live.
 For the aforementioned reasons, I believe that people can really live on Mars.
(212 Words)

◆ Cons
 As the human population on Earth has been exploding exponentially and Earth environment has been so polluted, it is often said that people have to move to another planet and Mars is the most habitable. However, I do not believe that people can really live on Mars for the three following reasons.
 The first reason is that Mars has too much CO2 and too less oxygen for human beings to live on. Earth has about 0.034% of CO2 and about 21% of oxygen while Mars has about as much as 95% of CO2 and only 0.14% of oxygen. Human beings cannot breathe in this environment.
 The second reason is that Mars does not have water which is indispensable for human beings to live. Moreover, without water, plants cannot grow there. If plants cannot grow, people cannot have enough foods to live.
 The third reason is that Mars does not have enough magnetosphere, so that people cannot be protected from solar winds and its radiation which are too harmful for human beings to live with.
 For the aforementioned three reasons, people cannot really live on Mars so that we must find a way to solve overpopulation and protect earth environment.
(202 Words)

Date:April 28, 2013

メモ

◆ トピック:人類は本当に火星に住めるのか?

例によって、賛成派と反対派を書きました。

賛成派では、序論で、
「人を月に送る技術」
「人が適応できる気温」
「空気と水と食料の存在」
の3つの条件を満たせばいいと言って、それぞれ、
「すでに人類の宇宙技術は、人を火星に送る事が出来る」
「火星の平均気温は、摂氏マイナス55度と、南極と同じくらいなので、人類にも住める」
「火星には酸素があるので、地球から水素を持ち込めば、水が作れ、植物も作れ、植物が増えれば、二酸化炭素の量が減り、酸素が増え、地球のように住めるようになる」
と言うふうに書いてみました。

反論としては、
「理論上は可能でも実際にやってみないと分からないのでは?」
「摂氏マイナス55度は、とても人間が快適に住める気温ではないのでは?」
「摂氏マイナス55度のような環境で、本当に植物が育つのか?」
などが考えられます。

反対派では、
「火星は二酸化炭素が多すぎる」
「火星には水がない」
「火星は磁気圏が弱いため、太陽風と有害な放射線から、人間を守る事が出来ない」
の3つを、キーアイディアに書いてみました。

反論としては、
「植物を増やせば、酸素が増え、二酸化炭素を減らせるのでは?」
「火星には酸素があるので、地球から水素を持ち込めば、水を作れるのでは?」
「植物を増やしたりして、火星を地球化すれば、やがて地球のような大気が出来て、太陽風から人間を守ってくれるのでは?」
などが考えられますね。

これは、知識がなかったので、いろいろと参考にさせてもらいました。
参考:
http://en.wikipedia.org/wiki/Colonization_of_Mars
http://ja.wikipedia.org/wiki/%E7%81%AB%E6%98%9F%E3%81%AE%E6%A4%8D%E6%B0%91