Description: 理解宇宙的关键基础之一是确定各种天体和现象的距离。理解距离不仅可以帮助科学家绘制可观测宇宙的地图，还能帮助他们了解各种天体和现象的物理特性。距离阶梯，通常被称为宇宙距离阶梯，是一个提供不同尺度上测量距离的概述框架。就像梯子的每一级一样，距离阶梯的每一级（测量技术）都是基于上一级校准的。距离阶梯从用于测量较近天体的技术开始（例如视差法），随着每一层的推进，科学家能够测量更远的天体（例如Ia型超新星、红移）。

Related Terms:

• 周年视差
• 造父变星
• 宇宙学
• Parallax
• 红移
• 标准烛光
• 变星

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

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