it was as large as our house...and silent enough no one inside heard a thing...nor did i

My brother and I were out in the front of our home; I was 9 or 10.  I don't recall the approach; only the fear we both felt when it was over us.  We both ducked under my mom's car and then after what SEEMED like a few minutes we both looked up.  The saucer was moving away slowly and then quickly glid across the skyline toward the west.  We ran inside and told our parents.  Of course no one believed us and it was a joke with my sisters for years.  After that I realized my parents didn't know everything.  About 15 years later I mentioned it to my brother as we hadn't spoken of it since the week it happened.  He just froze up and said, "i'm not supposed to talk about it.  They told me not to."  Although as a child I never doubted what I saw.  His odd behavior made me realize he was a troubled with it as I.
Date is approximate.  PD