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 民國初年（1939） 直至1949年 北京時間，還是烏魯木齊時間的火車票 OurChinahistory   Chl cn

Sciencealert In Antarctica, scientists led by nuclear astrophysicist Dominik Koll of the Helmholtz-Zentrum Dresden-Rossendorf in Germany, found rare iron-60 frozen in ice cores dating back to between 40,000 and 81,000 years ago. These results suggest that the Local Interstellar Cloud is a cosmic archive for supernova-produced iron-60.

 From hypernova From stargazerslounge eyeswideopen5 flickr

 From Nature Nov 2025  sustainability  The rapidly increasing demand for generative artificial intelligence (AI) models requires extensive server installation with sustainability implications in terms of the compound energy–water–climate impacts. Here we show that the deployment of AI servers across the United States could generate an annual water footprint ranging from 731 to 1,125 million m3 and additional annual carbon emissions from 24 to 44 Mt CO2-equivalent between 2024 and 2030, depending on the scale of expansion. Other factors, such as industry efficiency initiatives, grid decarbonization rates and the spatial distribution of server locations within the United States, drive deep uncertainties in the estimated water and carbon footprints. We show that the AI server industry is unlikely to meet its net-zero aspirations by 2030 without substantial reliance on highly uncertain carbon offset and water restoration mechanisms. Although best practices may reduce emission...

宋代十二種美学 雅、淡、寂、静、柔、和、婉、麗、秀、深、奇、簡。 這些特點體現在宋代的繪畫，建築，陶瓷等藝術形式中。 Zhihu  

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 四合一 Hopper Drill and other scientific instruments  嫦娥七號的「著巡飛組合」抵達月球南極後，巡視器、飛躍器將展開各種探測和找水工作。媒體報道認為，中國有望成為首個在月球找到水的國家。 　　資料顯示，嫦娥七號的軌道器、着陸器和巡視器，能持續工作8年，飛躍器則預計工作6個月。剛才提到飛躍器是找水的「撒手鐧」，所以好消息或不用太久便能傳來。 ILO-C telescope from HKU 10/4/2026 探測器已運抵文昌 cctv 24/4 cctv13   update Launch date Aug 2026 ( 8 Aug is major standstill) Weibo Headlines talk

Bilibili Most welcome  Now called as HAC125DX

Using "ring and tube" design Hyperbolic lightweight mirror 

700mm f/8 RC Officina Stellare LaClefdesetoiles The New Era: 0.7m Robotic Observatory On March 1, 2026, the historic 0.5m DFM telescope was decommissioned to make way for the next genera tion of astronomical tools. The Facility: 0.7m Officina Stellare Ritchey-Chrétien Reflector. The Technology: A fully robotic and remote-controllable system.

 Now in prototype phase 22KG Price 2x,xxx USD

  Hard water for good coffee?

Location: 興隆萬象(遙控)天文台 該天文台位於承德興隆觀測基地周邊，該基地的官方地理座標為：     北緯 (N)：40° 23' 36"     東經 (E)：117° 34' 30" (或 117° 34.5') Bortle 3 to 4 From meteodata: Est  sky quality 21.75 mag. Class 3 Bortle 0.21mcd/m2 brightness 43.57 ucd/m2 Familystar 小紅書 Google map Day 1 Raw, unprocessed  Day 2 Clearoutside Astronomy seeing 7timer Seestar S50 resolution is 2.39"/pixel. Astronomy. tools

To commemorate 45th anniversary of DOS fanfold printout fyom Tim Paterson    Redmondmag Blog on the adventure. It's like archeology in computer era ;) Twitter   GitHub  

  轨道器将搭载3台合作载荷，分别为：国际空间研究委员会探索工作组牵头研制的火星PEX光谱仪，用于开展火星生命痕迹探寻及表面矿物成分探测；澳门科技大学牵头研制的火星分子离子成分分析仪，用于开展火星大气逃逸过程探测； 香港中文大学牵头研制的激光外差光谱仪，用于开展火星大气水同位素廓线分布及火星风场探测。 服务器将搭载香港大学牵头研制的火星地物高光谱成像仪，用于开展生命痕迹、含水矿物及资源普查等探测。 着陆器将搭载意大利国家核物理研究院-弗拉斯卡蒂国家实验室牵头研制的激光角反射器阵列，用于在火星表面布设精确基准点。 据悉，中国行星探测工程天问三号任务，计划于2028年前后实施发射，2031年前后携带火星样品返回地球。 微訊 Cuhk Cpr cuhk MUST Wenweipo Baike

 今年的新聞報導，懶得mention portable battery 樽頸(kwh/kg)的問題 Sina 高密度电池和整机电池管理技术的飞跃，支撑机器人的续航距离从5公里大幅提升至10公里以上。 i.e. 最少要換電1-2次。 2026北京亦庄人形机器人半程马拉松今日落幕，荣耀齐天大圣队的人形机器人“闪电”以50分26秒（净用时）的成绩，成为本场机器人马拉松的冠军，打破人类半程马拉松世界纪录的56分42秒。此外，荣耀雷霆闪电队和星火燎原队的“闪电”机器人分别以50分56秒和53分01秒，分别位列第二、第三名。 The Sun Kyodonews

  此次比賽由「天工Ultra」以2小時40分42秒奪冠。天工機器人CEO熊友軍表示，今天測試到機器人的長距離穩定奔跑以及運行技術的可靠性和穩定性，下一步會持續迭代機器人的運動控制能力及上半身的操作能力，讓機器人走入生活，協助解決日常生活問題，甚至是代替、輔助人類在危險的場景工作。不過，他也提到機器人參加馬拉松，仍有些待解決的問題，包括中途需要更換幾次電池，電池續航能力還要再增強。 Bnext tw

  Sciencenet cn

Precipitation change  The demise of the Ming Dynasty (1368–1644) and the rise of the Qing Dynasty (1644–1912) marked an epochal moment in Chinese and world history. Attention has been given to the North China droughts during 1627–1643 that destabilized the Ming Dynasty. However, there is little attention paid to how climate influenced the rise of a minority Manchu state in Northeast China and its conquest of the Ming. Here, we find that contrasting climate conditions between North and Northeast China persisted over a six-decade period (1581–1644), which diversely affected economic, societal, and political changes at the regional level. Five successive megadroughts ravaged North China, while relatively wet and mild climate conditions prevailed in the Manchu homeland of Northeast China. Furthermore, in the early decades of Manchu rule in North China (1645–1680), increased precipitation facilitated the Qing Dynasty’s consolidation. Reconstructions and climate model simulations reveale...

  Speech from Gov sg Not sure if this video is real Statesman archive