i was walking my dog n i was looking in the sky at all the planes flying over ( there was about 4 in under 15 mins) and there was no clouds in the sky until the 3rd plane came there was like a little ball with a thin cloud around it, ( i thought it looked weird but didn't really think any think of it ) the 3rd plane passed the "cloud" and then came the 4th plane, as the 4th plane came closer to the "cloud" i looked away to see where my dog had gone and when i looked back the "cloud" had moved away from the plane, ( i still didnt really think any think of it ) as the 4th plane got closer to the "cloud" i looked away again to see where my dog had gone (i looked away for about 2 secs) and when i looked back the plane had disappeared but the "cloud" was still there. (you know when planes leave a trail in the sky well that had stopped right where the "cloud" was) i blinked and the "cloud" was gone!! i thought it was me being silly, but i saw my friend in the pub later and said to her i saw some think very strange in the sky this afternoon and she asked me if i saw the plane disappear!!i tryed looking for the plane but could not see it,it made me wonder if i was going crazy but i wasnt scared, but i think i should be! now that's very freaky as i didn't tell her where i was or what i saw she told me what she saw and it was the same thing i saw!! what i want to know is how a plane can just disappear?!! there was no think on the news about it or about any plane crashing or any think!! if that wasn't an alien i saw then what was it and what's really going on??how can a plane disappear and no one report it mising??