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History of space travel | ||
Time | Events | Information concerned |
Early 1900s | High-flying rockets were built. | It made the ancient dream of going to space possible to come 66) ▲ |
1903 | Konstantin Tsiolkovsky (67) ▲ out a way to use rockets for space travel. | He planned to put correct scientific calculation to use in rocket science. |
Around (68) ▲ | Robert Goddard built new rockets. | The rockets could fly very (69) ▲ in the sky. |
During and after World War II | German scientists built large rockets that could travel very far and carry dangerous explosives. | Germany was ahead of all the other countries in building space rockets and later it (70) ▲ the Soviet Union and the United States |
| The Soviet Union and the United States competed to get to space first. | The Soviet Union became the (71) ▲ of the competition when it launched the first satellite and sent the first astronaut into space. |
1969 | The United States was (72) ▲ in putting a person on the moon. | In one way, it (73) ▲ the Soviet Union by becoming the first country to fly people to the moon. |
1970s | The Soviets built the first space station and was soon followed by Americans. And they finally ended the "space race" by (74) ▲ | Astronauts can live and work in space stations. |
1980s-- | Space shuttles are used as new vehicles for space (75) ▲ . | Shuttles are also used to help put satellites into space. |
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