The International Space Station... Astronauts, cosmonauts, taikonauts etc. All in space.
But that's LEO - Low Earth Orbit. And they are 100 miles above us.
Amazing then to think that as you stand there waiting for your Garmin or Polar to find a GPS signal, it's 'pinging' an object about the size of a fridge or smaller, in space, orbiting around a fixed position on the Earth, at a distance of 36,000 miles away.
Yes, 36,000 miles. And it can pin-point your distance on our planet to an accuracy of about 10 metres at any one point in time. From 36,000 miles away.
That's Global Positioning System technology for you.
Woohoo off the injury couch
Couch 2 42.2K or, The Joy of Stubbornness
Thrills and Spills - 13.1 Miles Of It! 
Consolidating and chipping away the miles
Feeling much better!
