Mankind's desire to explore the universe never fades away. They attach great importance to carrying on space exploration the huge risks. The impossible dream of travelling to space was finally realized by some great scientists with （determine）.
In 1957, the Sputnik 1 satellite was launched by the USSR and （success） orbited around Earth. In 1961, the first Russian stepped into space. Over eight years later, American astronaut Neil Armstrong stepped onto the moon, （claim）"That's one small step for a man, one giant leap for mankind". Since then, many more goals （achieve）. The International Space Station the scientists can live and do research in space is a good example to show man's joint efforts and ongoing work.
Though China's space programme started later than of Russia and the US, it has made great progress in a short time. China was the third country （send） humans into space independently. The Shenzhou series have been launched, performing many important tasks. The completion of the Tiangong Space Station was also landmark in China's space development. In spite of the difficulties, the future is bright. More countries will make （far） studies about other planets and more valuable discoveries.
