Science. 1967 Jul 28;157(3787):427-9. doi: 10.1126/science.157.3787.427.
Under astronomically favorable circumstances, photographs do not reveal excess light near the triangular libration points of the earth-moon system. We find that the visible surface brightness of anomalous dust populations, if these populations do exist, is less than 10(-9) candela per square centimeter.
在极好的天文条件下,照片并没有在地球-月球系统的三角形平动点附近显示出多余的光。我们发现,如果异常尘埃团确实存在,那么它们的可见光表面亮度小于 10^(-9) 坎德拉/平方厘米。