Jeff Greason
@JeffGreason
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Would-be space settler who has to build the ships first
Joined February 2014
@jeff_foust 1/ I'm going to take a moment on this one, because this argument is . wrong. During the Augustine Commission we had an actual study done. The argument is wrong because in a multiple launch architecture most of the launches are just propellant tanks and you have spares!.
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Nobody involved here has ever read Larry Niven, have they?.
Death is not simply a biological fact, but it's also a social choice. To increase the number of donor organs, we should expand the definition of death. An op-ed I wrote with Snehal Patel and Deane Smith in the @nytimes today. via @NYTOpinion.
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Good article by Leonard David here. I would add only that in the modern era, a "program" need consist only of providing the glue and filling the gaps in US commercial capabilities. That's a lander sized around existing launchers and architecture to match.
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I'm looking forward to reading this.
To any space journos out there: If you're willing to embargo until tomorrow morning, I'll send you a link to our Reason study on why we should cancel SLS immediately if we want to beat China to the Moon. Email me at simberg@interglobal.org.
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RT @StephenFleming: “But what about water? The Southwest has plenty of water. It's just salty, and inconveniently located.” .
arizonadailystar-az.newsmemory.com
The following is the opinion and analysis of the writer:Iwatched the
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And when you burn the stuff you'd want to burn, what's left over is now much shorter-lived radionuclides (some of which are themselves economically useful, the rest of which are much easier to dispose of).
FACT: More than 90% of the potential energy still remains in spent nuclear fuel. Some advanced reactors under development could consume or even run on this fuel in the future.
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No more waiting for Godot. I got tired of waiting for Buck Godot @ZapGunForHire _The Gallimaufry_ in print; reading on a screen is too much like work. After legally purchasing the PDF copy, this is just back from the binders. Rest easy, @FoglioPhil I still wait eagerly the
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And even with much slower travel, say 25% of c, which we can see ways to do today, Alpha/Proxima Centauri is only 17 years away (probably closer to 25 when you add speeding up and slowing down), which isn't easy, but isn't impossible.
Our group focuses on near-term technologies for the first robotic forays beyond our solar system. But it’s worth addressing the oft-repeated claim: “The speed of light is a hard limit: You can’t travel to the stars in a lifetime, so it won’t happen. [1/9].
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If you haven't read this, it's absolutely worth the read if you like hard SF and space opera. I loved it. Take the sale :).
On sale 80% off:. Torchship:.Mitchie Long is undercover as a freighter pilot, spying on a gov't which wants to maintain total control of all computers to prevent lethal AIs from spawning. #ebook #KindleUnlimited #HardSF #scifi #sciencefiction #spaceopera.
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RT @JeffGreason: @RealJessica05 Basically, if you can't say "Truth, Justice, and the American Way" with a straight face, you have no busine….
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Interesting study on a possible method for paleolithic human migration to East Asian islands.
science.org
The Late Pleistocene maritime dispersals of Homo sapiens were not only intentional but also associated with strategic challenges.
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RT @JeffGreason: @PettitFrontier @JohnKross20 The capabilities now in, or on the threshold, of US companies *almost* give us a Lunar system….
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When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of Nature's God entitle.
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RT @Astro_Ayers: Just. Wow. As we went over Mexico and the U.S. this morning, I caught this sprite. Sprites are TLEs or Transient Luminous….
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Does anyone know the ultimate source for these? I keep seeing snippets and I love them; want to watch the whole set.
Remember what I said about that peculiar restaurant predominantly in the south-eastern corner of the North American continent?. Watch to the end. (See, AI is good for some things (well, more things than just cubes).)
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Why are spaceflight's fundamental technology maturation worthy of government funding? Because, like it or not, transportation technologies are always deeply interlinked with national power. Roads move troops as well as food, navies rely on the industrial base for commercial.
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If we find NASA can't be reformed back to the means of bringing aerospace technology from the research paper to the point where for-profit ventures can base a business plan on it, we're going to need something else. I know what needs doing, but how we fund it, I've no idea.
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This is one of the seldom spoken termites eating the foundation of the U.S. Urban centers did not used to dictate terms to the rural areas of their states; there was compromise -- a "republican form of government". Overturning this would go a long way to resurrecting that.
@Oilfield_Rando Reynolds v Sims ruined this country .
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I was reminded today that "technology is only funded for approved missions" and "missions won't be approved if they require new technology" is true in both NASA and DoD. People just assume that can't be fixed. I don't accept that. Does anyone know when this catch-22 started?.
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Just a beautiful twilight launch in Tucson from this. Pictures wouldn't have done it justice, but the whole first and second stage burn was just above and parallel to the horizon.
ALERT🚨 A rare event will occur tonight, visible to much of SW USA and NW Mexico!. A 'Twilight Effect' is possible with tonight's launch of SpaceX Starlink Mission 15-9!. Current T-0 is set for 8:36 p.m. PT (0336 UTC). You won't want to miss this event! Below is an interactive
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