A white sphere 5-7 ft. in diameter was viewed by about 35 people going form a stationary position to high rate of speed.

I was a child (9 yrs. old)  I was playing with about 25 kids and 10 or so adults watchin over us on a late summer evening.  Suddenly one of the kids yells out: Wow, look at that.  As I turned to look at him, he was pointing towards the western night sky.  As I looked in the direction he was pointing, I saw what I initially thought was a full moon that was partially obscured by the corner of a house.  Maybe an odd site at night but nothing that unusual.  I turned back to look at the kid as everyone was moving in unison at this point. The kid re-asserted his position to "look at that ball"!  I and the group of assembled kids and adults,(mostly mothers) turned to look at this "full moon" again.
Only as we were looking directly at this object, it slowly moved behind the house and out of sight.
Now everyone takes off for the house, looking behind it and over the adjacent hillside.
Seeing nothing, everyone stood around processing what was it that we'd just seen.  Summarily, some of the kids began throwing rocks over the hillside, presumably protecting the neighborhood from aliens.  After about two minutes of this discussion,  this object (a white sphere about 5-7 ft. in diameter) zipped from the hillside, right in front of all of us, moving up at about a 45 degree angle, making no noise at all, not even air displacement,  from south to north, then back north to south, south to north again, and finally north to south and off into the night leaving a trail much like a meteor would only this thing was moving up and was obviously under some form of intelligent control. The trail dissipated much like a meteor's trail would leaving the 35 or so people standing there in stunned silence momentarily. This sighting remains one of the more powerful and steady memories from my childhood and several of the people who witnessed this have over the years spoken about it as though it was a recent sighting.  I have since seen footage ( N.A.S.A) of objects that were seen while one of its craft was orbiting the moon I do believe during the Apollo program that look and moved exactly like what I saw that evening.
Date is approximate.  PD