An Alderson disk is a hypothetical megastructure. The disk is a giant platter with a thickness of several thousand miles. The Sun rests in the hole at the center of the disk. The outer perimeter of an Alderson disk would be roughly equivalent to the orbit from hiba sxswidth 0height 0125 outer div123float noneheight 30pxmargin 5pxdisplay inline 1125 imglink 123display inline blockcolor darkredtext align center125 imglink img span 123display blockcursor pointerborder1px solid Post