Unfortunately, attempts to explain this strange environment were frustrated by illusions such as the apparent motion
of the sun, moon and stars around the earth, which clouded our limited observational capability, such as our inability detect constant motion, thwarting the developing human mind's ability to correctly explain observations.
It's not actually moving - it's (an) apparent motion
caused by the bending of the light.
Stars with a higher apparent motion
across the sky have a greater chance of passing in front of a distant background star, where the deflection of light can be measured.
Our 24-hour standard day is based upon this apparent motion
of the sun, as the planet upon which we stand rotates on its axis every 24 hours.
In apparent motion
experiments, participants are presented with what is in fact a succession of two brief stationary stimuli at two different locations, but they report an impression of movement.
Although the actual positional changes made to Lowry's picture are very small, the apparent motion
created appears much larger.
I stopped by that evening and observed that the light came on even without any apparent motion
in the room.
In the Prashna Upanishad of Vedanta, time emerges in the context of the creative cycle, which begins with the apparent motion
(vibration) of energy.
One final comment: the images were stacked using Herbert Raab's excellent software Astrometrica, applying an average measure of the object's apparent motion
across the sky.
Based on the object's apparent motion
and the lack of an infrared detection by NASA's Spitzer Space Telescope, they argue that the object is a short-lived dust cloud unrelated to any planet.
All these works frame the two installation films to come, 3rd Degree and Apparent Motion
The German astronomer Friedrich Wilhelm Bessel realized that the large apparent motion
of 61 Cygni suggests that the pair is closer to us than most stars.