Содержание
- 2. Mars is the fourth planet from the sun . Planet Mars still poorly understood. it is
- 3. Mars has a thin layer of the atmosphere . it is half of the Earth. Mars
- 4. This planet has two moons - Phobos and Deimos .
- 5. Mars can be seen in the sky with the naked eye .
- 6. Man continues to explore Mars .
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