Difference between revisions of "Earth"

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[[Image:earth_with_moon.jpg|thumb|right|300px|Earth as seen from Mars]]  
 
[[Image:earth_with_moon.jpg|thumb|right|300px|Earth as seen from Mars]]  
  
'''Earth''' is the third planet from the Sun orbiting at a distance of approximately 149 million km. Earth, the third planet from the Sun (after Mercury and Venus), is the home planet of mankind and the most beautiful of all.
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'''Earth''' orbits the sun at a distance of approximately 149 million km. Earth, the third planet from the Sun after Mercury and Venus, is the home planet of mankind.  
  
 
==Physical==
 
==Physical==
It has a natural magnetic field (which [[Mars]] has not) that protects from [[solar wind]].  Earth is seen as a [[w:Astronomy_on_Mars|bright morning star]] from Mars.   
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It has a natural magnetic field (which [[Mars]] has not) that protects from [[solar wind]].  Earth is seen as a [[w:Astronomy_on_Mars|bright morning star]] from Mars.
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Earth has a mostly nitrogen atmosphere and has liquid waterThe nitrogen might be the hardest element to obtain for the eventual Terraforming of Mars.
  
 
==Sociological==
 
==Sociological==
The population on Earth is around 7 600 000 000 persons<ref>https://www.worldometers.info/world-population/</ref>, increasing exponentially.  However the United nations population projects mostly show a reduction in growth in the next few decades, peaking at about [https://population.un.org/wpp/Graphs/Probabilistic/POP/TOT/ 12 billions].  
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The population on Earth is around 7 900 000 000 persons<ref>https://www.worldometers.info/world-population/</ref>, increasing exponentially.  However the United Nations population projections mostly show a reduction in growth in the next few decades, peaking at about [https://population.un.org/wpp/Graphs/Probabilistic/POP/TOT/ 12 billions].
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The is no sociology on Mars.  Yet.
  
 
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[[Category:Astronomy]]
 
[[Category:Astronomy]]
 
<references />
 
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Latest revision as of 09:10, 7 January 2022

Earth as seen from Mars

Earth orbits the sun at a distance of approximately 149 million km. Earth, the third planet from the Sun after Mercury and Venus, is the home planet of mankind.

Physical

It has a natural magnetic field (which Mars has not) that protects from solar wind. Earth is seen as a bright morning star from Mars. Earth has a mostly nitrogen atmosphere and has liquid water. The nitrogen might be the hardest element to obtain for the eventual Terraforming of Mars.

Sociological

The population on Earth is around 7 900 000 000 persons[1], increasing exponentially. However the United Nations population projections mostly show a reduction in growth in the next few decades, peaking at about 12 billions. The is no sociology on Mars. Yet.

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