How to know if there is a wormhole?

[Ghost Matter]

As the title says. How do I know if there is a wormhole?

[Iceman]

You have to research the Find Wormholes techs (Large -> Medium -> All). Then, to be able to use them, you have to research the Use Wormholes techs.

[Ghost Matter]

I did but how I do I know where the wormholes are? Do I have to re-explore every planet? Try to travel through one?

[RedArgo]

They will show up on the map once you have the tech to see them. You then move on to them to move to the other side. Actually, I think you might have to move to it, then move to it again to use it, I'm not sure.

[Horseman78]

They also need to be in scanner range, so either a ship passing close by or by one of your scanner arrays on a planet

[Anguille]

You also need scanners i think.

[Ghost Matter]

Yeah, it seems it was the scanner thing I didn't get. I rarely build scanners and just use Hypersense. Looks like I'll need some survey ships at least [:-]

[martok]

^ I usually build planetary scanners -- partially because, as just mentioned, they can see wormholes (once you have the requisite technology), and partially because you can build them right away (whereas Hypersense takes a bit of research to get).