Description: 空間站是指在軌道上長期運行的航天器，為人類提供一個長期的空間家園。具體來說，它提供適宜的生存條件，從可呼吸的空氣到調節良好的溫度。迄今為止，所有空間站都依賴於定期運送的食物和水。到目前，空間站都處於或一直處於低地球軌道，國際空間站的軌道距離海平面約 420 公里。在軌道上運行的空間站處於自由落體狀態，宇航員、設備和空間站都受到地球引力的相同加速度。由於空間站內的宇航員和設備受到加速度的大小和方向與空間站內周圍環境相同，因此他們會體驗到失重的感覺，儘管他們實際上並沒有失重。這種感覺通常被稱為 "微重力"，不過這個名稱可能會引起誤解，因為地球引力對空間站、宇航員和設備的影響仍然很大。空間站主要用於研究，特別是研究微重力對人體的影響；這是為進一步的太空探索階段做準備。

Related Terms:

• 航天器

Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
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This is an automated transliteration of the simplified Chinese translation of this term

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