The researchers studied eight particles from Ryugu and found phyllosilicates, which are formed by chemical reaction between non-aqueous silicate minerals and liquid water, indicating that liquid and frozen water were both present.

研究人员通过研究 8 颗“龙宫”沙粒，发现其中均存在页硅酸盐，它是通过非含水硅酸盐矿物和液态水的化学反应形成，表明“龙宫”上或存在过液态水和冰冻水。