Air, my friends, gasses. Space is not empty. Gas can make you believe many things if you have seen and inhaled enough of it. Think about it. Take the gas out of your brain and the warp out of the hubble and you will know what I say is true.
Gravity is the weakest force in nature.
Cows have been defying it for years. I doubt the atmospheric gas defense would hold up in court. The doppler effect relys on space being a perfect vaccuum. We can't make assumptions like that when we're looking through trillions of lightyears of the stuff. Used under License.