The Cheerio effect, which describes how small objects can cluster on the surface of a liquid due to surface tension, does not occur in zero gravity. In a zero-G environment, liquids do not form stable surfaces but instead create floating bubbles. These bubbles can attract small objects placed on them, but the dynamics differ significantly from those on Earth. The absence of gravity alters the behavior of liquids, preventing the typical floating phenomenon. Overall, the principles governing the Cheerio effect are not applicable in zero-G conditions.