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Small satellites or Smallsats are satellites of low mass and size, usually under . While all such satellites can be referred to as ''small satellites'', different classifications are used to categorize them based on mass (see below). == Rationales == One rationale for miniaturizing satellites is to reduce the cost: heavier satellites require larger rockets with greater thrust that also has greater cost to finance. In contrast, smaller and lighter satellites require smaller and cheaper launch vehicles and can sometimes be launched in multiples. They can also be launched 'piggyback', using excess capacity on larger launch vehicles. Miniaturized satellites allow for cheaper designs as well as ease of mass production, although few satellites of any size other than 'communications constellations', where dozens of satellites are used to cover the globe, have been mass-produced in practice. Another major reason for developing small satellites is the opportunity to enable missions that a larger satellite could not accomplish, such as: * Constellations for low data rate communications * Using formations to gather data from multiple points * In-orbit inspection of larger satellites * University-related research 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Miniaturized satellite」の詳細全文を読む スポンサード リンク
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