Question on Mercury

  • Thread starter jobyts
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  • #1
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Main Question or Discussion Point

Still being so close to the sun, what prevents the planet Mercury from vaporizing away?
 

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  • #2
Garth
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Still being so close to the sun, what prevents the planet Mercury from vaporizing away?
Because it is made of rock and iron, mainly iron, and though close it is still not hot enough to melt, let alone vapourise.

Garth
 
  • #3
russ_watters
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To put it another way, Mercury doesn't vaporize for the same reason the Earth doesn't vaporize - it isn't close enough to the sun to get that hot.
 

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