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Monday, 7 September 2020

Planet Detective

Planet Detective 

What are reasons Mercury lost most of its atmosphere ?
There is a very thin layer of atmosphere around the planet.  It always getting " blown away "  into space by the pressure of the sunlight and by the solar wind.


Compare how close Mercury & the Earth are to the sun.
Mercury's distance from the sun is 57.717  million km.
Earths distance away from the sun is 151.21 million km.

Compare how much mass Mercury & the Earth have.
Mercury's mass is 3.285e+23.   
Earth's mass is 5.972e+24

How does not having an atmosphere affect the temperature ?
The clouds reflect on the heat of the sun away from the planet.  The winds circulate heat from hot places to cool places.  " Greenhouse "  Gases hold in the heat of the planet.

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