Currently making loops from Lembava, I'll pick a point and make an economy run towards it. I know when I have not been in a system because the central star is Unknown. However, all the planets have names and I can not explore them. Yet, at other times I have run into a system while trading and the planet next to the station shows unknown. Am I missing anything? Or once to get away from civilization do these strange exploring things go away? I thought if you had not been to a system, nothing would show up until you hit the scanner button?
P.S. I am using an Advanced scanner / detailed surface scanner.