Atmosphere

layer of gases surrounding a material body

An atmosphere is a layer of gases that create an astronomical object, that is held in place by the gravity.[1] A planet has an atmosphere when the gravity is great and the temperature of the atmosphere is low.[2]

The atmospheric gases around Earth scatter blue light (shorter wavelengths) more than light toward the red end (longer wavelengths) of the visible spectrum; thus, a blue glow over the horizon is seen when observing Earth from outer space. The Moon is visible in the background.

References

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  1. Williams, Matt (2016-01-07). "What is the Atmosphere Like on Other Planets?". Universe Today. Archived from the original on 2019-10-22. Retrieved 2019-10-22.
  2. Seki, K.; Elphic, R. C.; Hirahara, M.; Terasawa, T.; Mukai, T. (2001). "On Atmospheric Loss of Oxygen Ions from Earth Through Magnetospheric Processes". Science. 291 (5510): 1939–1941. Bibcode:2001Sci...291.1939S. CiteSeerX 10.1.1.471.2226. doi:10.1126/science.1058913. PMID 11239148. S2CID 17644371. Retrieved 2007-03-07.