Lesson 6 Into Outer Space
Fly Me to Mars
The big question is, “Can people live on Mars?”
Many scientists believe so for several reasons.
First, they think that there is water on Mars.
This is great because water is necessary for all life.
Second, Mars has hard land to build houses and buildings on.
Third, the length of day and night on Mars is similar to that on Earth.
In addition, Mars also has four seasons.
So, people can lead similar lives.
Lastly, Mars is not very far.
It is the second closest planet to Earth.
Mars, however, has some differences from Earth.
First, Mars is about half the size of Earth.
It is the second smallest planet in the solar system.
Second, a year on Mars is about twice as long as a year on Earth.
Third, Mars is much colder than Earth.
On average, it is about -60˚C on Mars.
This is because Mars is farther away from the Sun than Earth.
Although no one can answer the big question right now, it is exciting to imagine this new world.
Who knows? You could be the first Korean on Mars!
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