Lately, I've seen many Thargoid posts and I am wondering can you actually see them in-game? Read about them on Elite Wiki and it just says how they look and about Thargoid wars.
They speak??? english!!!! or warn you off physically?Yup, head a system which is under attack, or just Maia, and look for Non-human Signal Sources.
Some are immediately hostile, others are curious, but like their space. But they'll warn you to back off.
Quite interesting to see how they react.