I actually just for fun created a high DPI multiple page DWF of the Solar System on a 10,000 inch by 10,000 in page size. It was only 34KB in size. I set the plot style to make all lines with 0.0" lineweight for more crisp lines.
I placed the DWF file for viewing Download Solar-4 Please note you will need the free Autodesk Design Review to view this DWF. Here is a DWG version of the file for AutoCAD Download SOLAR from ACAD2-18