I'm into astonomy too, and I know the difference between a planet and a star, or a satellite and a plane, yet I've seen things I can't explain over the Avebury landscape late at night.
The most amazing thing was a 'vibrating' star over Alton Barnes two years ago. I've also seen the 'amber gambler' from the Cove in Avebury.
Jeez, there's even a 'golden ball hill' right by Alton Barnes. I think this stuff's been going on years.
I'm not saying I belive it's any one thing, I'm just saying I've seen strange lights is all.