Naked Science Forum
Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: xersanozgen on 05/07/2017 08:08:38
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Are the spectrums of Sun, Moon, Jupiter, Saturn etc. similar?
The lights of The Moon, Jupiter and other planets must give similar results on spectrometer, because they are reflects of sun light.
Well, may be some potential useful details possible because of spherical reflecting surface?
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The lights of The Moon, Jupiter and other planets must give similar results on spectrometer, because they are reflects of sun light.
It is true that the Sun, as the source of illumination, is common to all bodies in the Solar System.
However, the different bodies will absorb or reflect different wavelengths to different degrees, depending on their chemical composition.
This is visible to the naked eye in the case of Mars, where the high iron-oxide content in the crust gives it a distinct orange/red color, which is very different from the Moon or other planets. Similarly, Earth has a distinct blue tinge, from the oceans.
One thing that may not be obvious is that the reflected spectrum should be measured from a space probe, as ground-based observations are limited by Earth's atmosphere, which has considerable amounts of molecular nitrogen, oxygen, water vapor and argon.
The most useful wavelengths to use for spectroscopic observations of planets are often in the infra-red band, which can indicate molecular hydrogen, methane, carbon dioxide and ammonia. The spectrum of icy bodies like comet tails is quite different from rocky bodies like the inner parts of the asteroid belt.
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The lights of The Moon, Jupiter and other planets must give similar results on spectrometer, because they are reflects of sun light.
It is true that the Sun, as the source of illumination, is common to all bodies in the Solar System.
However, the different bodies will absorb or reflect different wavelengths to different degrees, depending on their chemical composition.
This is visible to the naked eye in the case of Mars, where the high iron-oxide content in the crust gives it a distinct orange/red color, which is very different from the Moon or other planets. Similarly, Earth has a distinct blue tinge, from the oceans.
One thing that may not be obvious is that the reflected spectrum should be measured from a space probe, as ground-based observations are limited by Earth's atmosphere, which has considerable amounts of molecular nitrogen, oxygen, water vapor and argon.
The most useful wavelengths to use for spectroscopic observations of planets are often in the infra-red band, which can indicate molecular hydrogen, methane, carbon dioxide and ammonia. The spectrum of icy bodies like comet tails is quite different from rocky bodies like the inner parts of the asteroid belt.
Thanks for your detailed information. Of course, some problems which you marked must be eliminated. The scientific data must be provided on refined form and in accordance with methodology.
Note: In my opinion, it requires similar advanced/competent mind for also reading of SR. People may be impressed by fantastic inferenses of first aproach like the theory SR. Whereas If a competent mind reconsider light kinematics, he can perceive the methodological defects of SR ( https://www.thenakedscientists.com/forum/index.php?topic=16413.msg517308#new (https://www.thenakedscientists.com/forum/index.php?topic=16413.msg517308#new) ). I want to invite you for the brief (# 137)