My creationist grandpa says that we are at the center of the universe and that other galaxies are in spherical shells around us and claim that this means we are in a special place in the universe. Basically he believes in the "quantized redshifts" thing you may or may not have heard of, which basically says that the redshift data of galaxies suggest that every cluster of galaxies are in a spherical shell around us. I'm probably not explaining this very well. Here is a creationist website that goes into details about this http://creation.com/our-galaxy-is-the-centre-of-the-universe-quantized-redshifts-show. The thing is I don't know the story here. Is the problem in the math that is being done? Is the problem in the accuracy and precision of the equipment that collected the data? My grandpa in an engineer and has a much better understanding of mathematics then I do. I am just a high school graduate that takes an interest in science on the internet. What am I missing? What do I need to know? I have looked for answers debunking this, and haven't really seen anything that I could understand.