Just finished an inventory of the solar system started last night at 8 and then finishing just now with Venus and Mercury daytime sightings. Venus is fairly easy to see during the daytime with a telescope or with a bit of guidance, naked eye. Mercury was quite hard as it sits in the haze of the sun. Took about an hour to complete the observation. First, a bad spot for the GEM mount delayed going to it, then it took about 15 minutes to see the planet even when it was in the eyepiece. A real ghost that came and went at it's leisure.
So rest easy, the solar system is all there. PS. thank god Pluto is not a planet anymore :)