I’d delete successfully. If it weren’t successful, you wouldn’t have made it there, would you?
International Space Station is capitalized because that’s its name. (On the other hand, space station would not be capitalized; it’s a common noun, not a proper one.)
You have just made your first trip to the International Space Station. You are looking down at Earth, admiring the gorgeous view. You see a small light, and then several hundred more across the globe. They were nuclear bombs. You try to contact Houston, but no one responds.