本文系此篇文章的附加部分：https://http://zhuanlan.zhihu.com/p/653156071 此外，…

12月4日，在一个无风亦无雨的夜晚，深圳宝安区的航城街道突然发生了地面坍塌事故，在路面上形成了一个大坑。 与此同时，共有13名现场作业人员失联。事故发生后，应急救援工作第一时间得到开展。 为何地面塌陷的发生会如此突然？地面塌陷的面积会如此大？带着这些疑问，现尝试利用有限的资料，对事故原因做出一点推测。 注：本文素材均源自网络资料整理所得。 事故地点 根据新闻通报，事故发生在深圳宝安区洲石路。 在地图查找，洲石路的地理位置如下图所示，共穿过数条高速公路。 从另一个角度的事故照片来看，塌陷坑旁边有一栋窗户局…

Thorough analysis has identified the root cause of char loss seen on the Artemis I heat shield. NASA determined that crew can safely fly on #Artemis II using the existing Orion heat shield design. Launch is now targeted for April 2026. More: https://go.nasa.gov/3OHae7d

SpaceX rolling Booster 14 to the Orbital Launch Site. The booster will be flying on the seventh flight of Starship!

24/7 Coverage: nsf.live/starbase

⚡ Become a member of NASASpaceflight's channel for exclusive discord access, fast turnaround clips, and…

NASA has also released a high resolution photo of the Artemis 1 heatshield, alongside a detailed explanation of the mechanism behind the unexpected char loss during the flight.

https://www.nasa.gov/missions/artemis/nasa-identifies-cause-of-artemis-i-orion…

Architecture firm ZGF has revamped Portland Airport (PDX) with locally + sustainably sourced mass timber for a brand-new, all wood roof.

I designed a mascot for the UC Davis REALOP Cubesat Project! Launching as part of the NASA CSLI program, its payload is a hard drive disk that serves as a low-cost reaction wheel. Here's a photo of the flight computer PCB with my silkscreen drawing and an…

这可能是全网最全的考证，基本研究了个底掉？ [图片] 预言家上一下参考文献：最快！最全面！…

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Think satellites are too fragile to survive high-g environments? Think again. We’re excited to unveil our latest ruggedization milestone: spinning a Portland State University satellite to 10,000Gs! Partnering with Portland State’s satellite program, OreSat…