对Bennu样本的X光扫描揭示出破碎、多孔的岩石,说明地表供暖和冷却迅速,解决了一个长期存在的谜。 X-ray scans of Bennu samples reveal cracked, porous rocks explaining rapid surface heating and cooling, solving a long-standing mystery.

2026年3月17日, 美国航天局宣布对小行星本努的样本进行X射线扫描, 发现其巨石内有广泛的内部裂缝, On March 17, 2026, NASA announced that X-ray scans of samples from asteroid Bennu revealed extensive internal cracks in its boulders, explaining why the surface showed low thermal inertia—rapid heating and cooling—despite appearing rugged. 这解决了一个长期存在的谜题:早期的遥测数据表明了沙地表面,但OSRIS-REx飞行任务发现很少这样的区域。 This resolves a long-standing mystery: earlier telescopic data suggested a sandy surface, but the OSIRIS-REx mission found few such areas. 这些多孔、破碎的岩石能让热量迅速消散 与热量观测相匹配 The porous, fractured rocks allow heat to dissipate quickly, matching thermal observations. 这些研究结果基于对返回样品的地球分析,增进了对小行星构成的了解,并对行星防御和空间资源使用产生影响。 The findings, based on Earth-based analysis of returned samples, enhance understanding of asteroid composition and have implications for planetary defense and space resource use.