How do machines or space ships navigate in deep space?

Misconceptions:-1.) Sound: We cannot use sound, as there is vacuum in space. And sound needs a medium of travel. So it is of no use.2.) Light: We cannot use light also. Firstly space is mostly dark and empty so there is not much to see like you can see while travelling in a car. And secondly … Continue reading How do machines or space ships navigate in deep space?