Because you haven't got an Advanced Discovery Scanner / haven't scanned the Nav Beacon. That's the usual reason.
Thanks all.
Supplementary question- how come I can zip between galaxies in a matter of seconds but sometimes takes forever to get to a distant outpost within a system?
Thanks all.
Supplementary question- how come I can zip between galaxies in a matter of seconds but sometimes takes forever to get to a distant outpost within a system?