“Currently the cost per ton to the surface of Mars is about a billion dollars. Civilization can't afford to build Mars at a billion dollars a ton. That's insane. Even a million dollars a ton is still high.”Elon Musk https://t.co/xCDLp6dG1X ...

RT DogeDesigner (@cb_doge)"We should send rockets not at each other, but rather to the stars."一 Elon Musk https://t.co/GUFdqgXR6m ...

Many would say NASA needs to be going for the moon shots to use a better pun, but they should be going for extraordinary exploration. They perhaps shouldn't be funding well testing of, well, certain private companies engines. They shouldn't be actually beefing up in terms of manages.They'd be stripping layers. But is this going to the moon shots to. Well, I think that's kind of the question of of the moment right now.There's this fundamental tension of what an asset is supposed to be. You know, for years, f ...

"This is like an incredible thing to have this amazing city on Mars, the first city on another planet, and a new world.There's a lot of freedom and opportunity on Mars to do a recompile on civilization, which will be up to the Martians."Elon Musk https://t.co/0oWIsnZUBA ...

There are potentially serious concerns about the long-term safety of the @Space_Station. Some parts of it are simply getting too old and obviously that risk grows over time.Even though @SpaceX earns billions of dollars from transporting astronauts & cargo to the ISS, I nonetheless would like to go on record recommending that it be de-orbited within 2 years.Casey Handmer (@CJHandmer):The ISS's structural integrity is far more marginal than is being publicly discussed. We are having multiple, and increasingly ...

科研就是不断探索问题的边界 人们过去花了数个世纪来接纳数字"零"的存在。而今，"零"正在帮助神经科学家们理解人脑如何感知虚无。与感知和意识相关的 神经科学研究，大多聚焦于我们如何意识到事物的"存在"。然而，对"不存在"的体验也构成了我们意识体验的重要组成部分—— 我们经常能觉察到那些肉眼无法看见的事物，而揭示这背后的神经基础对充分理解意识问题同样重要。 当我观鸟时，总是遇到这样一个尴尬场景——同行的观鸟人指着树冠，让我快看叶子后面藏着的那只 鸟。而每当我举起望远镜来回搜寻时，永远只能沮丧地看见鸟的"空影"。 这类对"不存在之物"的生动体验，对于我们的内心世界而言非常常见，但大脑如何上演这出"皇帝新 衣"式的独角戏仍是个谜—— 当没有任何东西可供感知时，大脑如何产生感知体验？ 作为一个对意识问题感兴趣的神经科学家，研究"虚无"的神经基础无疑是个极其诱人而又富有挑战的课 题。幸运的是， 比起其他虚无，有一种更具体的虚无形式——0，至少0是有形的。 为此，人们不惜花 上大量精力，尝试抓住"零"这个线索——研究人脑如何感知数字"零"，或许就能够最终解开大脑迷雾重 重的"虚无主义"。 "零"在人类社会的发展中扮演了一个 ...

“Our eventual upgrade path is to build the successor to Saturn V, a super-heavy lift vehicle that could be used for setting up a moon base or doing a Mars mission. That would be the holy grail objective.”Elon Musk in 2003 predicting the Starship https://t.co/JDAmFMbCQ0 ...

Starship looking back at Earth https://t.co/Dx2Uej2R4H ...

Just days after soaring to a 15-month high, Boeing Co. BA is facing harsh headwinds. The stock fell more than 5% on Thursday following reports that a Dreamliner 787-8 carrying more than 200 passengers crashed shortly after takeoff near Ahmedabad, India.The tragic event has rattled investor confidence and reignited safety concerns that Boeing had worked hard to put behind it.Chart created using Benzinga ProMomentum Was Building On All FrontsBoeing had been riding a major comeback story. After years of supply ...

Well saidFermat's Library (@fermatslibrary):Freeman Dyson on the importance of cheap space travel https://t.co/9VnA38cYrZ ...