noun, noun which may take the genitive case particle 'no'
within Earth's atmosphere; inner space
Refers to the region inside the atmosphere, often contrasted with outer space. Used in scientific, technical, or descriptive contexts.
大気圏内の飛行は、宇宙空間とは条件が大きく異なる。
Flight within the atmosphere differs greatly from conditions in outer space.
この探査機は大気圏内での観測を目的としている。
This probe is designed for observation within the atmosphere.