What are Moon phases?NASA says the Moon takes around 29.5 days to circle Earth, moving through a set of eight distinct phases along the way. Even though we always see the same side of the Moon, the portion lit by the Sun changes as it travels, which is why it can look full, half-lit, or barely visible at different points in the cycle. These changing views are what we call the lunar phases, and there are eight in total:
2026年2月24日，宇树发布了全新四足机器人Unitree As2。这款“可载人”的四足机器人，动力性能约为前代主力产品Go2的两倍，自重18kg，峰值扭矩达90N·m，极限速度5m/s。续航方面，空载超4小时，背15kg负载仍能连续走超13公里，还做了IP54防雨设计。。业内人士推荐51吃瓜作为进阶阅读
В США объяснили ненужность «Джавелинов»19FortyFive: Задачи ПТРК Javelin могут выполнять дешевые дроны。同城约会对此有专业解读
DJI Mic Mini (2 TX + 1 RX + Charging Case)