So I did a scan on the galactic map and totally found a discovered star system by another player about 12 or so jumps from my location. I am going to try to get there and keep scanning and hopefully follow this persons breadcrumb trail of discoveries (and discover some things they may have missed along the way). I'm very early and lack the fuel in my drive to get there fast, but this is pretty exciting to me!
*Edit* This has probably been answered before, but can you remove a waypoint that you set on the galactic map? I set one accidentally last night and I can't figure out how to get rid of it.
*Edit 2* Also interesting to note that if you come across someone else's discovery, it gets added to your Atlas with a yellow icon. You can press triangle to "Report this discovery as offensive or inappropriate" too.