Planets – XKCD

Fantastic comic by xkcd, as usual. But the most interesting part is the hovertext:

Planets are turning out to be so common that to show all the planets in our galaxy, this chart would have to be nested in itself–with each planet replaced by a copy of the chart–at least three levels deep.

So, approximately how many planets in our galaxy?

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2 Responses to Planets – XKCD

  1. Fawn Nguyen says:

    There must be a poser size of this. Very cool. Have to spend some more time at xkcd. Can I get partial credit by answering your question with “a hell of a lot”?

  2. Josh says:

    476,379,541 If I understood him correctly.

    That’s quite a number.

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