How exacly do Science vessels affect the expeditions? The description says that SV reduces chance of getting blackholed by 10%, but is that compound percentage, or just if there is at least one? Is there any point in bringing more than one SV to expedition? Does it have any OTHER impact on expeditions?

I think that the overall effect, I have sent more scientific vessels and yet I fell into a black hole, that is one part of the fleet, and between other ships lost and one science vessel ...

keep trying. i don't lose my fleet that much. last 7 expedition no fleet loss. and good luck.