Can we tag a location in No man's sky?

Solution 1:

Not in the traditional sense, like in MGSV, but Polygon says

Using your Analysis Visor, you can scan buildings and structures. Doing this will put a white dot above them on your screen and make them show up as a waypoint both on your minimap and on your HUD.

This tagging process isn't permanently visible. Your tag seems to have a range of about six or seven minutes worth of walking distance, so it's a good temporary solution to help you with a limited task, but don't rely on it for a cross-continental journey. Once you're back in range, the tagged building will show up again, though.

I'm afraid this is the closest thing.