Russian engineers plan to extend Internet to space

Here's Vint Cerf's memo regarding an Interplanetary Internet [pdf]: http://www.ipnsig.org/reports/memo-ipnrg-arch-00.pdf

Hasn't this been operational in mars satellites for a while now?

How is this plan different from existing constellations like Iridium or Globastar?

looks incredibly ambitious, like Iridium :)

Why didn't Google think of that?!