As a scientist I can believe there is intelligent life out there, I just don't believe they would consider us intelligent. Serious though, the "cloaked ship" probably an asteroid that could not be see until the solar wind lit it up. As for massive objects around the sun, I don't have my drug induced glasses on so I can't see it. Needless to say that the other life forms in the universe capable of traveling here would likely view us as: A. Food B. A curiosity C. Slave labor D. Would still be testing to see if we are should be allowed to continue to evolve to a point where we can spread to the stars and infest other planets. E. Don't even care if we exist.