The 21st century will witness vigorous development of space activities across the world.

二十一世纪将是世界航天活动蓬勃发展的新世纪。

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Since 1955, Japan has been active in the development of space science and technology for peaceful purposes.

自1955年以来，日本一直在和平开发空间科学和空间技术。

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Dynamics environment is a very important factor for the development of space optics remote sensors because it can bring about damage to the structure of the equipment and its subassemblies.

动力学环境是空间光学遥感器及其组件研制中不可忽视的一个重要因素，因为它会对整机或组件造成结构性的破坏，所以在其研制的不同阶段须进行充分的动力学环境试验。

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This is a big change from earlier models where NASA led and controlled the development of space vehicles.

VOA: special.2010.04.28

Much of what was learned from its flights speeded up the development of the space program.

VOA: special.2010.07.07

NASA hopes that Dawn's year long orbit around Vesta will help scientists learn more about the development of the solar system, and how asteroids and other space objects were created.

VOA: special.2011.07.27

Both Koreas see the development of space programs as crucial hallmarks of their scientific prowess and national pride, and both had high-profile failures before success.

NPR: SKorea: Satellite Working Normally, Sending Data

"But our concerns with Iran's development of space launch vehicle technologies are obviously well-known: Any space launch vehicle capable of placing an object in orbit is directly relevant to the development of long-range ballistic missiles, " she told reporters.

CNN: Reports: Monkey soars from Iran into space -- and back

The US space agency is scheduled to retire its space shuttles next year, and has begun the development of a new human space launch "architecture" called Constellation.

BBC: Spaceship passes critical review