The stories I generally hear mirror everything here - "stars" moving quickly and erratically, balls of orange light and so on. Personally I think a lot of this can be explained climatically. Light affects matter and can be affected by matter; I imagine, in at least some cases, that air currents and other compounds in the air could affect what we see above us, in a similar way to mirages etc.
I do, however, believe that there is no logic behind the Idea that the Earth's capacity for life is singular. There are hundreds of billions of galaxies in the universe, each containing many billions of stars and therefore planets. The currently accepted Big Bang Theory puts the universe at around 13.7 Ga (billion years old or Giga annum) and earth at around 4 Ga so, even if it took 9 billion years for the universe's energy to be low enough to facilitate life there is no way we're alone in a dimension of such massive proportions, in respect to time, space, matter and energy.
Even Creationists are in my opinion kidding themselves - to think that God would create such a massive masterpiece, only to populate one miniscule rock with us!