Plane, satellite or space station? How to identify a moving light in the night sky
A point of light is sliding across the sky, silently, and you want to know what it is. You can almost always answer that in about ten seconds with four checks. Look at whether it blinks, whether it moves in a dead-straight line at an even pace, whether it fades out in the middle of the sky, and how long it lasts. No gear needed, and a free pass-prediction website will confirm your guess afterwards. The key below is the one I use from my balcony in Nicosia; the sections after it explain each line. ...