I had thus learned a second fact of great importance: this was that the planet the
little prince came from was scarcely any larger than a house!
　　But that did not really surprise me much. I knew very well that in addition to the
great planets-- such as the Earth, Jupiter, Mars, Venus-- to which we have given names,
there are also hundreds of others, some of which are so small that one has a hard time
seeing them through the telescope. When an astronomer discovers one of these he does not
give it a name, but only a number. He might call it, for example, "Asteroid 325."