Observing strong, rapid twinkling in any celestial object is a certain signature of what?
Answer
Heavy distortion by Earth’s lower atmosphere above the observing spot.
Twinkling is never an inherent property of the celestial body itself; it is a real-time gauge of how turbulent the air mass directly above the observer is.

Related Questions
Why do stars consistently exhibit the twinkling effect?How does the light from a planet appear upon reaching Earth compared to starlight?What specific characteristic of Earth's atmosphere causes the random bending of starlight?What mechanism stabilizes the light from a planet, preventing noticeable flickering?Under what primary condition will a planet noticeably appear to flicker?When an object is viewed near the horizon, why is atmospheric interference increased for its light?Observing strong, rapid twinkling in any celestial object is a certain signature of what?What atmospheric phenomenon causes flickering objects near the horizon to display brief flashes of red and blue?What happens to the pinpoint beam of light from a distant star as it passes through turbulent atmospheric layers?Based on angular size, how is a distant star characterized compared to a nearby planet?