Description: 20 世紀 90 年代末，對非常遙遠星系中的 Ia 型超新星（一類恆星爆炸現象）發出的光進行測量顯示，它們比膨脹率（速度）恆定的宇宙所預期的要暗。測量結果與宇宙膨脹加速的情況一致。目前對於加速膨脹的解釋引入了暗能量的成分，其性質尚不清楚，是目前研究的一個課題。宇宙加速膨脹發生在非常大的尺度上，對單個引力束縛的星系沒有明顯影響。

Related Terms:

• 宇宙微波背景輻射（CMB）
• 宇宙學
• Galaxy
• Supernova
• Universe

Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

This is an automated transliteration of the simplified Chinese translation of this term

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