This is a very cool animation that shows how small the earth is all the way to the core of a cell. A very good and also interesting view of the universe. It starts at 10 million light years from earth just to give some perspective as to how big it is. http://micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10/
From the site http://www.tenthdimension.com/ there is a video that explains all about the different dimensions and how it could be possible to get to them by folding through the universe. It's a good little video to watch and you may even learn something new.