问题描述：
帮忙校对一下英语翻译正确不?（语法）
1. Mars are Earth's close neighbor, it has very many similar characteristics with the Earth;
2. many scientists outside thought Mars have the star life existence possibility;
On 3. Mars' air extremely thin, the temperature is very low, does not have the water;
4. US and Soviet Union once sent the pilotless space ship to go to Mars;
5. believes in the near future, China can share the achievement together with other countries which Mars develops.
1. Mars are Earth's close neighbor, it has very many similar characteristics with the Earth;
2. many scientists outside thought Mars have the star life existence possibility;
On 3. Mars' air extremely thin, the temperature is very low, does not have the water;
4. US and Soviet Union once sent the pilotless space ship to go to Mars;
5. believes in the near future, China can share the achievement together with other countries which Mars develops.
问题解答：
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