Description: 暗能量是宇宙加速膨胀的一个可靠解释。在过去的 60 亿年里，宇宙一直在作为可观测的最大尺度进行膨胀。暗能量通常被描述为一种与引力相反的 "力"。通过对 Ia 型超新星、宇宙微波背景（CMB）辐射、星系团、引力透镜和重子声波振荡的间接观测和测量，可以推断出暗能量占宇宙总组分的超70%。尽管如此，关于暗能量的性质、是否存在不同类型的暗能量、暗能量是否会随着宇宙时间的推移而变化以及暗能量的替代理论等课题，仍有许多研究和争论。

Related Terms:

• 宇宙微波背景辐射（CMB）
• 暗物质
• Galaxy Cluster
• 引力透镜
• Supernova
• Standard Candle

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

The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".