that link was a thirdphaseofmoon link i found it interesting but the one about the black holes was even more interesting , let alone the speed of light slowing down, and speaking of in a vacuum of space theres gasses out there and particles to so how much vacuum do you need for light top travel at its peak velocity , considering the amount of gass clouds and particles which refract light to a certain degree pending on the cosmic cloud dust and gas amounts , if they could measure the vacuum of space how much would it change by considering the amount of gas and dust and clouds out there so i take it its not a perfect vacuum either otherwise wed get a better view of the stars minus the gas giant clouds etc