Name: 火星：人類はいつ到達するのか？| エコノミスト (Mars: when will humans get there? | The Economist)
Uploaded: 2021-01-14T08:07:00.000Z
Duration: 3 min 11 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

Mars, the Red Planet, made from rock, iron, fable and myth.

Since the ancients named it for the God of War,

it has had a unique hold over the human imagination.

There are similarities between Mars and Earth.

and its surface too cold for unsheltered life,

it is far more astronaut-friendly than any of the other planets.

It's riverbeds, deltas, and dried lakes speak of a past more watery than its arid present.

there are still some liquid water on Mars today, and water is key to life.

or might just possibly still have it today

is one of the reasons more space probes have been sent there than to any other planet.

and Europe's ExoMars rover will arrive next year.

NASA talks of sending humans to Mars on a new spacecraft within the next two decades.

Elon Musk's space technology company SpaceX has plans as early as 2024.

Such missions with crews would be among the biggest technical challenges humans have ever undertaken.

The journey can only be made when the planets are properly aligned.

That only occurs roughly every 26 months,

but even then, it takes around nine months

The challenge of a life-support system that can operate for years without resupply is daunting.

The cost will be high and the hurdles immense.

and quite likely that some will die trying.

Coming up next Thursday, the hunt for oceans in space.

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火星：人類はいつ到達するのか？| エコノミスト (Mars: when will humans get there? | The Economist)

present

properly

vast

journey