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SESK: Stuff Everyone Should Know · sesk.info/pilot-autokinesis

What is autokinesis?

A still light seeming to move when you stare at it in the dark.

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  1. A still light seeming to move when stared at ✔
  2. Feeling a turn after leveling the wings
  3. Mistaking stars for ground lights

Why: In the dark, a stationary light can appear to wander if you stare at it for many seconds. A pilot who tries to line up with that fake motion could lose control of the airplane.

Huh, didn't know that: Mistaking stars and ground lights for each other is a different night illusion, called a false horizon.

The dad joke
I stared at a streetlight so long it started dancing. It had better moves than me.
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References

Answer: A still light seeming to move when stared at. In the dark, a stationary light can appear to wander if you stare at it for many seconds. A pilot who tries to line up with that fake motion could lose control of the airplane.

  1. Airplane Flying Handbook FAA-H-8083-3C, Chapter 11 www.faa.gov/sites/faa.gov/files/regulations_policies/handbooks_manuals/aviation/airplane_handbook/12_afh_ch11.pdf
    In the dark, a stationary light will appear to move about when stared at for many seconds.
    Checked 2026-10-09.

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Flying & DronesWhat causes the flight illusion called the leans?Flying & DronesAbout how long do your eyes need to fully adapt to darkness?Flying & DronesA runway narrower than you are used to can make you think you are what?

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