- #1
kirred
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Let me start off by stating that I have no formal education in Astrophysics, or any other education beyond high school, so if my question is stupid, just say so!
Dark Energy, from my understanding Dark Energy is used to explain the expansion of the universe, because when we look at distant galaxies they appear to be moving away from us and this is deduced by measuring the red shift of light from distant galaxies, the Doppler Shift.
Dark Matter is an invisible matter that wraps all galaxies and it's properties are not understood at all, other than that it exerts gravitational pull within galaxies. Dark Matter is invisible because we look through it in the milky way when observing distant galaxies and we look through it in distant galaxies (because they are also wrapped in it).
Now if Dark Matter's properties are not understood, how can we be sure that it doesn't affect the red shift of light from distant galaxies?
I hope its not a stupid question, and if anyone can give me a link to more on Dark Matter I'd appreciate it..
Thanks
Dark Energy, from my understanding Dark Energy is used to explain the expansion of the universe, because when we look at distant galaxies they appear to be moving away from us and this is deduced by measuring the red shift of light from distant galaxies, the Doppler Shift.
Dark Matter is an invisible matter that wraps all galaxies and it's properties are not understood at all, other than that it exerts gravitational pull within galaxies. Dark Matter is invisible because we look through it in the milky way when observing distant galaxies and we look through it in distant galaxies (because they are also wrapped in it).
Now if Dark Matter's properties are not understood, how can we be sure that it doesn't affect the red shift of light from distant galaxies?
I hope its not a stupid question, and if anyone can give me a link to more on Dark Matter I'd appreciate it..
Thanks