Why is it that certain stars seem to glimmer with rapidly shifting patterns
of color? Is it because of the atmosphere? I mean, some you can look at
and they just twinkle like normal but they seem to remain a white-ish color,
where as others seem to be flashing all sorts of different colors (and no,
they're not UFOs or planes ). Anyone care to explain to this newbie?

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{RainmakeR}