For today's APOD, I decided to change it up a bit. If you click on the link above, it will take you to a very cool interactive flash animation that lets you see how things scale in size compared to the known universe. At the beginning of your virtual journey, you start at a ten meter scale either increasing or decreasing by powers of ten. Some of you may have seen the classic Powers of Ten video, which is very similar to this. The animation takes you all the down to 10 to the negative 35th power (one Plancke Length) and all the way up to 10 to the 27th power (the size of the observable universe). On the journey you will see things in space that you may know of such as Halley's Comet, Io, Vega, the Horsehead Nebula, the Andromeda Galaxy, and other such interstellar objects. I thought I should select this because it puts everything in perspective for how immense the universe is and how we as humans scale to it.
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