Definitions for exosphere
ˈɛk soʊˌsfɪərex·o·spher·e

Princeton's WordNetRate this definition:0.0 / 0 votes

1. exospherenoun

   the outermost atmospheric layer

WiktionaryRate this definition:0.0 / 0 votes

1. exospherenoun

   the uppermost layer of a planet's atmosphere

2. exospherenoun

   an extremely thin atmosphere, as on Saturn's moon Dione

WikipediaRate this definition:0.0 / 0 votes

1. Exosphere

   The exosphere (Ancient Greek: ἔξω éxō "outside, external, beyond", Ancient Greek: σφαῖρα sphaĩra "sphere") is a thin, atmosphere-like volume surrounding a planet or natural satellite where molecules are gravitationally bound to that body, but where the density is so low that the molecules are essentially collision-less. In the case of bodies with substantial atmospheres, such as Earth's atmosphere, the exosphere is the uppermost layer, where the atmosphere thins out and merges with outer space. It is located directly above the thermosphere. Very little is known about it due to a lack of research. Mercury, the Moon, Ceres, Europa, and Ganymede have surface boundary exospheres, which are exospheres without a denser atmosphere underneath. The Earth's exosphere is mostly hydrogen and helium, with some heavier atoms and molecules near the base.

ChatGPTRate this definition:0.0 / 0 votes

1. exosphere

   The exosphere is the outermost layer of Earth's atmosphere, located above the thermosphere. It is primarily composed of extremely low densities of hydrogen, helium, and other particles, where they can escape into space. It's the boundary between Earth's atmosphere and outer space. The exact height varies, but it starts roughly around 500 to 1,000 kilometers above Earth's surface and extends up to 10,000 kilometers or more. At this height, the particles are so spread out that they rarely collide with each other, and the temperature can vary greatly. The exosphere is also the layer where Earth's weather satellites orbit.

WikidataRate this definition:0.0 / 0 votes

1. Exosphere

   The exosphere is a thin, atmosphere-like volume surrounding a planetary body where molecules are gravitationally bound to that body, but where the density is too low for them to behave as a gas by colliding with each other. In the case of bodies with substantial atmospheres, such as the Earth's atmosphere, the exosphere is the uppermost layer, where the atmosphere thins out and merges with interplanetary space. It is located directly above the Thermosphere. Several moons, such as Earth's moon and the Galilean satellites, have exospheres without a denser atmosphere underneath. Here molecules are ejected from surface rocks and follow independent parabolic trajectories until they collide with the surface. Authors differ as to whether such moons are considered to have atmospheres or not. Smaller bodies such as asteroids, in which the molecules emitted from the surface escape to space, are not considered to have exospheres.

Matched Categories

1. • Atmosphere
   • Layer

How to pronounce exosphere?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

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   Fred

   US English

   Tessa

   South African

How to say exosphere in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of exosphere in Chaldean Numerology is: 9

2. Pythagorean Numerology

   The numerical value of exosphere in Pythagorean Numerology is: 7

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=exosphere
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Exosphere
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Exosphere
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=exosphere