What feature usually makes aircraft lights recognizable when observing them moving across the sky?

Answer

Flashing different colors (red, green, and white)

Aircraft lights are typically recognizable because they flash distinct colors, such as red, green, and white, and their movement path is often slow and predictable, linking airports.

What feature usually makes aircraft lights recognizable when observing them moving across the sky?

#Videos

What's up with the lights in the night sky? - YouTube

lightnightskyphenomenon