What can the color of an exoplanet tell?
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  cheatsguy777

Planetary Explorer
Planetary Explorer

Joined: 2010-October-02
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Posted: 2010-November-25 at 9:43pm | IP Logged Quote cheatsguy777

as exoplanet detectors become better and better, we will soon be able to know the general color of the planets we are looking at. according to NASA, that may be all we need to discover what we are looking at. All of the planets in our solar system have a color signature, which are put on this graph here. as you can see, jupiter and saturn are both dark, venus is very white, mars is (obviously) red and neptune and uranus are very blue. Earth is very different from all of them, having a very bright white-blue signature. here is the graph I made to show this:

http://cheatsguy777.deviantart.com/art/Planetary-colors-1874 60905

so hopefully this will show how we can find what's there before going there!

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  JanL

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Celestial Watchman
Celestial Watchman

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Posted: 2010-November-26 at 12:48pm | IP Logged Quote JanL

Hi Cheatsguy 777, good question.  Presently we can't see even the largest exoplanet, we see the affects of it by the parent star's dimming and wobble.  How we could analyse the composition of each planet in the future would be very interesting.  All matter has a unique electromagnetic energy signature.  Jan

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  cheatsguy777

Planetary Explorer
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Location: United States
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Posted: 2010-November-26 at 4:31pm | IP Logged Quote cheatsguy777

Actually, several planets have been imaged, like fomalhaut b and HR 7899 b, c, and d have all been photographed.
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