How do space-travellers navigate in our solar system?

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Offline thedoc

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Dave Naughton asked the Naked Scientists:
   
Pre-GPS, seafaring navigators used magnetic compasses and before that they used the stars to find their way.

My question is:

How do space-travellers navigate in our solar system and how is Voyager 1 navigating in interstellar space and beyond?

Loved Chris' visit to Primedia.

Regards

Dave Naughton

What do you think?
« Last Edit: 01/05/2013 09:30:05 by _system »