Science. 1963 Feb 22;139(3556):750-2. doi: 10.1126/science.139.3556.750.
The illusion was obtained with artificial moons viewed against a luminous ceiling, and also with an imaginary ceiling induced by first showing a luminous ceiling and then removing it before the moons were introduced.
该错觉是通过在发光天花板的背景下观察人造月亮，以及通过先显示发光天花板然后在引入月亮之前将其移除来产生的虚拟天花板而获得的。
