NASA官方合作的动画才是硬核科普！牛妈挖遍全网，精选5部NASA加持的航天动画，从空间站日常到火箭发射原理，娃边看边学，保准追着你问“妈妈，我什么时候能上太空？” ...

here are the orbits of ALL 128 MOONS OF SATURN. This isn't just a moon system—it's a literal asteroid belt around Saturn! 🧪🔭☄️ “image or embed” — astrafoxen (@astrafoxen.bsky ...

我们正站在时代裂变的临界点：人工智能主权、气候难民、数字伦理……这些2025年热点绝非考场命题，而是文明蜕变的鲜活脉搏。每个关键词都在宣告——旧秩序正在崩解，而你我皆是新纪元的铸剑者。

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.