Going through 31 orders of magnitude, from the size of an electron, to the size of the universe. I have included three measures of distance in this plot; the normal distance in meters, the mass of a black hole with an event-horizon of that radius, and the light-crossing time for that distance. A black hole the size of you, for example, would have a mass of about 1025 kg, and it takes light a millionth of a second to scale the Eiffel Tower...
Suggestions about things to add to the list, are very welcome. Please E-mail contributions to me at art@mso.anu.edu.au (a short text and the size/distance is all I need).
Enjoy! - Regner
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