Name
- Atmosphere
Description
- It is a layer of gases that may surround a star or planet of sufficient mass, and that is held in place by the gravity of the body. [1]
- Gas giants consist mainly of various gases, but only their outer layer is their atmosphere.[1]
- The outer layer of a star is considered to be its atmosphere.[1]
- HD 209458 b was the first exoplanet where an atmosphere has been confirmed.[1]