Thanks! Mysteries give me an ache. I found that the "cover-up" began at least as early as 1997!! A 15 year, multi-agency obscuration! Well, on second thought, maybe not.
I found this long winded link (1997)
NASA STS-80 Debunked?
"The STS-80 scenes seem ... identical ...to the ... STS-48 scenes ... low-light sensitive B&W cameras are trained on the receding horizon during night ... observe ... lightning events for an experiment called Mesoscale Lightning Experiment ..."
And more recently (2009):
Footage in the Sky: The Truth Behind NASA's UFO Videos | Fox News
Thomas Jones, a former shuttle mission specialist ... was on that mission — STS-80, which also took place in 1996 — and provided this description of the footage. "A few ice crystals ... are floating by, get hit by a thruster ... and zip out of the scene."