https://twitter.com/planet4589/status/1388167774346821632?s=200
天和号核心舱经历了数次升轨，而轨道上的长征五号芯级的轨道正在缓慢衰减。
天和号核心舱经历了数次升轨，而轨道上的长征五号芯级的轨道正在缓慢衰减。
Twitter
Jonathan McDowell
Maybe this is clearer, although more cluttered: instead of average height, here are perigee and apogee height separately. I except further Tianhe orbit raising in the next couple of days.
Forwarded from 口呆唔咔
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Forwarded from Solidot
NASA 暂缓 SpaceX 的 29 亿美元月球登陆舱合同
2021-05-01 10:40 #NASA
上个月，SpaceX 打败了 Jeff Bezos 的 Blue Origin 和国防承包商 Dynetics 赢得了NASA 的 29 亿美元的月球登陆舱合同。NASA 原计划在初始阶段选择三家公司，然后再从中选择两家公司去建造月球登陆舱，此举旨在维持一个竞争环境，确保一家出现意外后还有替代。但 NASA 以预算不足为由只选择了 SpaceX 一家公司去建造登陆舱，Blue Origin 和 Dynetics 随后向美国政府问责办公室投诉了这一决定，Blue Origin 指责 NASA 不公平的在最后一分钟改变方案，而只选择 SpaceX 将会危及到 2024 年载人登月的时间表。在政府问责办公室投解决所有未决诉讼前，NASA 通知 SpaceX 暂缓合同履行。
2021-05-01 10:40 #NASA
上个月，SpaceX 打败了 Jeff Bezos 的 Blue Origin 和国防承包商 Dynetics 赢得了NASA 的 29 亿美元的月球登陆舱合同。NASA 原计划在初始阶段选择三家公司，然后再从中选择两家公司去建造月球登陆舱，此举旨在维持一个竞争环境，确保一家出现意外后还有替代。但 NASA 以预算不足为由只选择了 SpaceX 一家公司去建造登陆舱，Blue Origin 和 Dynetics 随后向美国政府问责办公室投诉了这一决定，Blue Origin 指责 NASA 不公平的在最后一分钟改变方案，而只选择 SpaceX 将会危及到 2024 年载人登月的时间表。在政府问责办公室投解决所有未决诉讼前，NASA 通知 SpaceX 暂缓合同履行。
Forwarded from RSS bot
南极冰层溶解导致海面的上升，比预想的严重
http://jandan.net/p/108895
http://jandan.net/p/108895
煎蛋网
南极冰层溶解导致海面的上升，比预想的严重
海平面会升得比预计更高。
Forwarded from Hacker News
Implicit In-order Forests: Zooming a billion trace events at 60fps (Score: 100+ in 7 hours)
Link: https://readhacker.news/s/4KKJQ
Comments: https://readhacker.news/c/4KKJQ
Link: https://readhacker.news/s/4KKJQ
Comments: https://readhacker.news/c/4KKJQ
thume.ca
Implicit In-order Forests: Zooming a billion trace events at 60fps - Tristan Hume
Forwarded from Hacker News
Making Generative Art with Rust (Score: 100+ in 13 hours)
Link: https://readhacker.news/s/4KKQE
Comments: https://readhacker.news/c/4KKQE
Link: https://readhacker.news/s/4KKQE
Comments: https://readhacker.news/c/4KKQE
blog.abor.dev
Making Generative Art with Rust
Artists as technical experts and an interview with generative artist Alexis André
标题: Die Internationale
艺术家: Hannes Wader
专辑: Der Rebell
专辑封面: Cover
http://music.163.com/song?id=18267037
艺术家: Hannes Wader
专辑: Der Rebell
专辑封面: Cover
http://music.163.com/song?id=18267037
Forwarded from Hacker News
Scaling Monorepo Maintenance at GitHub (Score: 108+ in 1 day)
Link: https://readhacker.news/s/4KGZb
Comments: https://readhacker.news/c/4KGZb
Link: https://readhacker.news/s/4KGZb
Comments: https://readhacker.news/c/4KGZb
The GitHub Blog
Scaling monorepo maintenance
Today, GitHub can repack even the largest repositories we host in a fraction of the time it used to take. Here's how we did it, and why.
Forwarded from Hacker News
Why software engineers don't write documentation – it's bloody hard (Score: 104+ in 4 hours)
Link: https://readhacker.news/s/4KMXK
Comments: https://readhacker.news/c/4KMXK
Link: https://readhacker.news/s/4KMXK
Comments: https://readhacker.news/c/4KMXK
Kislay Verma
Why programmers don’t write documentation | Kislay Verma
We don't write documentation because writing clearly is extremely hard.
Forwarded from Starlight Serenade
知乎专栏
从圆角到圆角
从圆角到圆角iPhone 一直都是关于屏幕，Steve Jobs 在 2007 年发布会上就将第一代 iPhone 的 3.5 吋显示屏称为“巨大的屏幕”，而在 iPhone 设计最初阶段也同“无边泳池”这个意象相关联，所有的设计元素遵从于屏…
Forwarded from Hacker News
Thoughts on a “HDD shortage” from an industry insider (Score: 104+ in 4 hours)
Link: https://readhacker.news/s/4KNkZ
Comments: https://readhacker.news/c/4KNkZ
Link: https://readhacker.news/s/4KNkZ
Comments: https://readhacker.news/c/4KNkZ
reddit
Thoughts on a "HDD shortage" from an industry insider.
Welcome to /r/Chia! This subreddit is dedicated to open discussion of Chia cryptocurrency and any news related to the project. We believe that...
Forwarded from Hacker News
A whale who tried to mimic human speech (2014) (Score: 101+ in 3 hours)
Link: https://readhacker.news/s/4KNuZ
Comments: https://readhacker.news/c/4KNuZ
Link: https://readhacker.news/s/4KNuZ
Comments: https://readhacker.news/c/4KNuZ
Smithsonian Magazine
The Story of One Whale Who Tried to Bridge the Linguistic Divide Between Animals and Humans
While captive in a Navy program, a beluga whale named Noc began to mimic human speech. What was behind his attempt to talk to us?
Forwarded from Hacker News
Mars Ingenuity helicopter mission extended by NASA (Score: 100+ in 8 hours)
Link: https://readhacker.news/s/4KP3v
Comments: https://readhacker.news/c/4KP3v
Link: https://readhacker.news/s/4KP3v
Comments: https://readhacker.news/c/4KP3v
BBC News
Mars Ingenuity helicopter mission extended by Nasa
Nasa is so pleased with the success of the Ingenuity helicopter, it is extending its mission.
Forwarded from Hacker News
Windows Terminal Quake Mode (Score: 100+ in 1 day)
Link: https://readhacker.news/s/4KH7Z
Comments: https://readhacker.news/c/4KH7Z
Link: https://readhacker.news/s/4KH7Z
Comments: https://readhacker.news/c/4KH7Z
GitHub
terminal/#653 - Quake Mode.md at main · microsoft/terminal
The new Windows Terminal and the original Windows console host, all in the same place! - terminal/#653 - Quake Mode.md at main · microsoft/terminal
Forwarded from Les Rêveries 🦄
Red & blue functions are actually a good thing | Blaine Hansen
https://blainehansen.me/post/red-blue-functions-are-actually-good
https://blainehansen.me/post/red-blue-functions-are-actually-good
blainehansen.me
Red & blue functions are actually a good thing
By avoiding effect aware functions a language hobbles engineers and makes programs sloppier than they could be.
Forwarded from Les Rêveries 🦄
TLDR: Async fn 返回 Promise 而不是一般的结果。
在类型系统的层面上暴露这个实现细节是有益的，因为这样我们就不容易错过每一个用 join 的机会。
换句话说，stackful coroutine 保证了 caller 可以用 call 普通函数的方法来 call 它，因而从 caller 方是否有必要使用一个 waitgroup 的信息反而被隐藏了。
在类型系统的层面上暴露这个实现细节是有益的，因为这样我们就不容易错过每一个用 join 的机会。
换句话说，stackful coroutine 保证了 caller 可以用 call 普通函数的方法来 call 它，因而从 caller 方是否有必要使用一个 waitgroup 的信息反而被隐藏了。
Forwarded from Hacker News
What3Words – The Algorithm (Score: 102+ in 3 hours)
Link: https://readhacker.news/s/4KQvy
Comments: https://readhacker.news/c/4KQvy
Link: https://readhacker.news/s/4KQvy
Comments: https://readhacker.news/c/4KQvy
Cybergibbons
What3Words – The Algorithm
What3Words is a widely promoted system that is used for sharing a location using just three words. For example, ///wedge.drill.mess is located in Hyde Park.The globe is divided into 3m squares, eac…