As below, so above

Article Abstract:

Spce exploration activities have produced space debris which are threatening future low-Earth orbit use. Man's effects on the Earth's environment should show the need for voluntary regulation and decisive control. Efforts to stop space debris must characterize future space activities.

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Human exploration of space: The next steps

Article Abstract:

Weightlessness plays an important role in facilitating human adaptation to long-duration space flight. The creation of artificial gravity will aid humans in the construction of an international space station and the exploration of other planets.

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Commercial space development in the Millennium 2000

Article Abstract:

Issues are presented concerning the geopolitical and legal factors governing the commercial development of outer space. The construction of the National Aeronautics and Space Administration's international space station is discussed.

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