请告诉我有关太空探索的简短历史，并要求回答使用json格式输出，包含3个要点及其详细描述。
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{
  "history_of_space_exploration": [
    {
      "era": "Early Rockets and Theoretical Work",
      "description": "In the early 20th century, scientists like Konstantin Tsiolkovsky, Robert Goddard, and Hermann Oberth laid the theoretical foundation for space travel. Their work, combined with early rocket development, paved the way for future space exploration."
    },
    {
      "era": "The Space Race",
      "description": "The mid-20th century saw intense competition between the United States and the Soviet Union to achieve significant milestones in space exploration, leading to the launch of the first artificial satellite, Sputnik 1, and the first manned spaceflight by Yuri Gagarin."
    },
    {
      "era": "Modern Space Exploration",
      "description": "In the late 20th and early 21st centuries, space exploration has expanded with the launch of the Hubble Space Telescope, the International Space Station, and missions to explore Mars and other celestial bodies, driven by international cooperation and private enterprises."
    }
  ]
}
assistant