Ok, tried flying up to the nav beacon marker - the yellow three-quarter circle - but no sign of the beacon itself. I hve tried toggling through available targets: just lots of spacecraft, but no nav beacon. Any ideas, please?
[Edit: It's ok, I have found it. The white marker on the scaner]
[edit 2;] so what happens now is I have flown to the suggested target planet and I keep getting a 'Mission related signal source' in blue, which promptly disappears from my info panel. How do I re-find that signal source?