Thought I'd post this from Reddit over here

[Falcon91]

Someone seems to have found a Thargoid probe near the center of the Galaxy

https://www.reddit.com/r/EliteDangerous/comments/o9bldn

Source: https://www.reddit.com/r/EliteDangerous/comments/o9bldn/i_found_this_while_exploring_near_sagittarius_a/

 

[Factabulous]

Sensor. Not probe. And yeah, known.