人类发明的太空船
人类发明的太空船
Man has been to the moon. It was the first step to the travels in space. The moon is much nearer to the earth than all the planets. Venus,（金星） a very near planet to the earth, is millions of
kilometers away! Traveling to the planets will be man's next aim. It will be more difficult than traveling to the moon and certainly more exciting.
In 1997, an American spaceship （太空船）reached Mars, （火星）the second nearest planet to the earth. A wonderful robot slowly walked on the planet and worked hard. It sent a lot of information back to the earth. The most exciting piece was that there used to be a lot of water on Mars. The American scientists wanted to find the answer to the question: “Is there any life on Mars?”Unluckily, no life was found there. But American scientists have not lost heart.
Russian spaceships have found that it is so hot on Venus that there must be no life there.
Spaceships of the future will be bigger and faster. They will be able to carry people for travels to the moon or the planets.
Man may in the future find planets like the earth and make them his home. But there is still a long, long way to go. Man should learn
to know that the earth will be his only home for a long time and begin to love and take good care of it.