# The Naked Scientists Forum

### Author Topic: Mars Temperature and black bodies  (Read 2639 times)

#### seth

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##### Mars Temperature and black bodies
« on: 09/07/2008 17:02:17 »
What does Mars absorbing solar radiation and re-radiating the energy as a black body do to its temperature? What is the temperature of Mars?

#### DoctorBeaver

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##### Mars Temperature and black bodies
« Reply #1 on: 09/07/2008 18:19:34 »
As far as I am aware, no planets act as black bodies.

If you look here you may find some useful data.
« Last Edit: 09/07/2008 18:28:30 by DoctorBeaver »

#### Soul Surfer

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##### Mars Temperature and black bodies
« Reply #2 on: 09/07/2008 19:26:26 »
A with any object in space near a star the mean temperature is a balance between the radiation it recieves from the star and the radiation it looses to the depths of space.  Assuming that energy originating from within the planet is small.

Your question has no simple answer because the local temeperature varies very considerably between day and night.

#### seth

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##### Mars Temperature and black bodies
« Reply #3 on: 10/07/2008 10:58:32 »
What equation would you use to calculate the temperature assuming that it did re-radiate solar radiation as a black body?

#### Alan McDougall

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##### Mars Temperature and black bodies
« Reply #4 on: 10/07/2008 14:12:22 »
Mars is extremely cold compared to Earth. But sometimes in summer at the equator temperatore reach as hight a 70 degrees Fahrenheit.

The night on Mars are unimaginable bleak and cold. Usual day times not much better,

Not a very nice place at best and too awful to think about at worst

Regards

Alan

#### syhprum

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##### Mars Temperature and black bodies
« Reply #5 on: 10/07/2008 20:56:05 »
I believe a black body at the orbital distance of Mars would have a temperature of 216.6°K (-56.4°C) compared with about -18°C at Earth distance.

#### Bored chemist

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##### Mars Temperature and black bodies
« Reply #6 on: 10/07/2008 21:28:31 »
If wiki is right then it gets colder on Earth (-89C) than on Mars (-87). It also gets hotter on Earth.

#### The Naked Scientists Forum

##### Mars Temperature and black bodies
« Reply #6 on: 10/07/2008 21:28:31 »