"Darrell" wrote in
:

At first I was sure that this was an airplane heading toward me or
even directly away from me because it was not moving left or right.
After 2 hours the light was still in the same place respective of the
background stars.

What causes some stars to have red and blue twinkles, and others not?




Depends on:

1. How much atmosphere you are looking through to see the particular
star (i.e its' altitude).

2. How much air turbulence happens to be in the path the starlight is
traversing.

Llanzlan.