Description: 星光在到达我们的过程中强度减弱，这一现象称为消光。这种减弱是由于光在传播过程中被粒子吸收和散射造成的。消光可能来自地球大气层（称为大气消光）、恒星附近的物质（称为星周消光）或恒星之间的物质（称为星际消光）。大气消光主要是地球大气中存在的气溶胶和分子，如水、二氧化碳和臭氧，在光学和近红外波段的影响。星际消光则归因于气体和亚微米级尘埃粒子组成的星际物质。与气体微粒相比，星际尘埃对星光的影响更大。消光通常在较短波长下更强，反之亦然，这使得天体看起来比其真实颜色更红（红化）。

Related Terms:

• 大气消光
• 灰尘
• Interstellar Extinction

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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