×
FREE ASSISTANCE FOR THE INQUISITIVE PEOPLE
Tutorial Topics
X
softetechnologies
Thermosphere Weather, Climate and Air Temperature
Exosphere - Physical Geography
3506    Dibyendu Banerjee & Sudipta Banerjee    30/07/2019

The word 'exosphere is derived from the Greek word 'exo' meaning 'outside' or 'external.' The Exosphere is the very edge of our atmosphere. This layer separates the rest of the atmosphere from outer space. The top of the exosphere marks the line between the Earth’s atmosphere and interplanetary space. It starts at an altitude of about 500 km, from the top of the thermosphere, and goes out to about 10,000 km, where it merges into the solar wind.

softetechnologies

The air in the exosphere is very thin, and almost completely ionized. It mainly consists of immensely low densities of hydrogen, helium and traces of atomic oxygen and carbon dioxide closer to the Exobase. The atoms and molecules are so far apart that they can travel hundreds of kilometers without colliding with one another. and the particles constantly escape into space. These free-moving particles may migrate in and out of the magnetosphere or the solar wind. The temperature in the exosphere wildly varies and can range from 0 to over 1700º C. It is colder at night and much hotter during the day.

exosphere

Although the exosphere is the most distance layer of earth's atmosphere it is the planet's first line of defense against the powerful rays of the Sun. It is also the first layer to face and protect the earth from the unknown meteors, asteroids, and cosmic rays. The Exosphere is the ideal region for the satellites as there is very little friction and they can safely orbit without being disrupted. Most of the molecules that exist in the exosphere end up being pulled back into earth's lower atmospheric levels by gravity. However, some zoom out into space instead, due to the low level of gravity and pressure in the exosphere.

softetechnologies

Since the Exosphere gradually fades into outer space, there is no clear upper boundary of this layer.

Thermosphere Weather, Climate and Air Temperature
softetechnologies
Author Details
Dibyendu Banerjee & Sudipta Banerjee
Article by Dibyendu Banerjee, an Ex-student of Scottish Church College, Kolkata. Authored several novels in Bengali and translated into Bengali novels/short stories of eminent writers of the world. Regularly contributes articles to different web sites on different subjects. Edited by Sudipta Banerjee, educated at Loreto House, Kolkata. Completed her B.A [Hons] in Geography and M.A from Presidency College, Kolkata, B.Ed from the Institution of Education for Women, Hasting House, Kolkata. Taught for 38 years, as Middle School Mistress at Victoria Boys’ School, Kuseong and as Asstt Teacher in Geography at Multipurpose Govt Girls’ School, Kolkata.
Enter New Comment
Comment History
No Comment Found Yet.
Sri Sri Ramakrishna Paramahamsa
All religions are true. God can be reached by different religions. Many rivers flow by many ways but they fall into the sea. They all are one.
Sri Sri Ramakrishna Paramahamsa
2732
34.21
Today So Far
Total View (Lakh)
softetechnologies
01/01/2018     33611
28/06/2017     29530
02/08/2017     27024
26/05/2018     26987
15/05/2017     23239
06/07/2017     21773
01/08/2017     21320
25/06/2018     20151
21/04/2018     18620
14/07/2017     16470
softetechnologies