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Originally Posted by Myst
you do know that light does not travel the same speed in air, water, glass, etc when compared to a vacuum right?
u can control the speed of light just by making it go thru another medium
thats why light bends in water, it goes slower in water than air
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Exactly! Which is a main problem of telescopes and trying to judge the distance and age of the Universe and it's objects.
Space is NOT a vacuum. If you look carefully you'll notice someone put a UNIVERSE smack dab in the middle of it. Huge gaseous clouds light years in length and breadth and 100s of billions of galaxies and 70%+ matter we can't fully detect. So light travelling through all that shit is dependable enough to measure age and distance?
I think not
