What is the blinking red and green star to the south?

I was star gazing in Florida, then I catch this flickering star.Green and red, constantly and I believeed it was and aircraft(I,m in aviation so do not begin with criticism)It stayed in same general location relative to other stars. Weird. Binary/variable star? Just wondering.








P.S. I looked at it with my 21mm reflector scope with 3x barlow and a 25mm eyepiece, and it looked kinda like a halo lol(I don;t believe it's a UFO at all just probably optical illusion)|||It could be the scintillation effect of the Earth's atmosphere on a bright star, I would try to rule out the aircraft possibility first, before I jump to that conclusion.





The brighter stars are known to "twinkle" or scintillate in the flickering and color changing fashion that you describe. It would have to be low in the sky, near your horizon, to notice distinguishable color.





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I would bet you were seeing the star Canopus. From Florida, 9 hours ago, (time you asked this question, according to Y!A), Canopus would have been due south, at about 10 degrees above the horizon. If you are familiar with the night sky enough to recognize Orion and Sirius, Canopus would be almost directly "below" Sirius for you. Check back tomorrow. You might not have as much atmospheric turbulence to create this scintillation tomorrow night, but the star itself will be in almost the exact same loaction at the same time.|||I believe it was an aircraft too.



Green is a code-color for the right (starboard side) half of the aircraft.

Red is a code-color for the left (port side) half of the aircraft. Port is red whine, that is how to remember it.



There aren't any stars that appear green:

http://www.youtube.com/watch?v=ILpa7mT5o鈥?/a>|||I've noticed it too, I think it's some sort of satellite.|||Aircraft.





I'm not sure what you would expect to see in a 21mm reflector. That's tiny!