How to Identify that Light in the Sky

An interesting – simple guide to identify a very common question: What is that light in the sky?

An answer may result from a few quick observations.

For example — is it moving or blinking? If so, and if you live near a city, the answer is typically an airplane, since planes are so numerous and so few stars and satellites are bright enough to be seen over the din of artificial city lights…

source APOD