An usual co-incidence with an amazing bright sphere falling or just moving towards the ground.

I had departed my place of work at 7pm  Oct. 31 and Halloween evening.  I had noticed that there was a half moon in the very dark South East sky.  I drove North from SW 74th  on Santa Fe street towards SW 59th  and about half the distance I suddenly saw a very bright very white spherical object seem to move very fast at a descending angle of about sixty degrees towards the East.  It lasted about three to four seconds and then vanished.  I thought it could not be a meteor because it was so bright and white and I have seen many meteors in my time.  It may have been something that crashed but lost its brilliance before doing so.  Just a few hours earlier I was taking to a man about the year 1958 and I had said that that was the year that the Russians had managed to launch a satellite into Earth orbit … it was called 'Sputnik'.  But the next day (Nov. 1St  today) I looked it up on Wikipedia and found out it was launched in 1957 and fell to Earth in 1958.  Anyway! it seems like an odd coincidence that I would even have the discussion about the first satellite, __  and then just hours later see this strange brilliant white object move in the dark sky.
Witness elects to remain totally anonymous; provides no contact information.  PD