"Jupiter Two"-like spacecraft, flew noiselessly, slowly just over the field in our backyard.

My mother, my three oldest brothers, and I walked out of our house in the evening to drive to church to attend a Coffeehouse function (that’s what they were called).  It was evening and dark but not too late – I would venture to guess it was bet. 6:30 and 7:30pm.  We saw something that astonished us in the night sky.  Looking NW we saw a huge vessel that was not very high in the sky, over the field in the back of our house.  We lived on a court and there was a 3 or 4 acre field behind our house.  The UFO was about 500 feet up, moving very slowly toward the SE, noiselessly.  I have a very good picture in my mind of it – it largely resembled the typical UFO spacecraft, just like the “Jupiter Two” from the “Lost in Space” series.  On the bottom of the craft were large, lit panels.
 We all remarked upon this – how amazing it was to see.  We knew instantly that what we were seeing was otherworldly.  It was so close, so large, and moving without sound.  After it departed, at a constant but slow speed, I don’t know why we didn’t just all go back inside and call the police.  I do remember that we went inside to tell my father what we had seen (he was home babysitting my little brother), but we then just proceeded to go on to church.  We all compared notes in the car ride to church, “Yep, it looked just like the Jupiter Two” we agreed.  At church we asked folks if they had seen it – only one or two people said they had heard there was some kind of large weather balloon in the area that was being tested.  This was no weather balloon.  It was directly over the field in our backyard.
 I know what I saw.  I’d love to see it again sometime.  Hopefully I’ll have the presence of mind to videotape next time!  (I do not know the exact date of this event.  I thought the year had to be ’73 or ’74.  I just chose this date because I saw some other Baltimore entries.  Specifically we lived in the suburb of Pikesville, MD.)
Witness indicates that the date of the sighting is approximate.  PD