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Prikvačeni tweet
I've started a Patreon campaign, so people can help me improve my Atomic Rocket websitehttp://www.patreon.com/nyrath
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Winchell Chung proslijedio/la je Tweet
A training torpedo stuck in the hull of the soviet atomic submarine K-178, 1989.pic.twitter.com/D5eaOVqXFe
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Winchell Chung proslijedio/la je Tweet
I'm posting this link because I like the contractor's name - Ford Aeronutronic. http://spaceflighthistory.blogspot.com/2015/06/empire-building-ford-aeronutronics-1963.html … It was about giving Nova and NERVA something to do.
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Winchell Chung proslijedio/la je Tweet
I’m calling the ship done, next is FX. Drive plasma and pew pew! Also I forgot to toothbrush the stars in the bg so adding them now will be fun...pic.twitter.com/xk0nE1gQEs
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Winchell Chung proslijedio/la je Tweet
There's a terrible pun about Matterhorns in there somewhere.
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Winchell Chung proslijedio/la je Tweet
We normally mine U at 0.1-1%, but there is at least 1.4 ppm everywhere. The mantle is estimated to have some 0.008-0.020 ppm, which is in the high range of most asteroids, the core is thought to be quite U depleted compared with the mantle while the crust is heavily U enriched.
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Winchell Chung proslijedio/la je Tweet
There is a value that I personally think it's much more important than the total quantity of a given metal, it's is the concentration, which is the core of how viable it is to extract something. Lower concentrations require more work, more sofisticated processes and energy.
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Winchell Chung proslijedio/la je TweetHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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Winchell Chung proslijedio/la je Tweet
Beware, aliens are involved! "Lens Flare: Magnified X-Ray Binaries as Passive Beacons in SETI": https://arxiv.org/abs/2002.00128 -> http://seti.berkeley.edu:8000/lens-flare/
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Winchell Chung proslijedio/la je Tweet
Space art from an unexpected direction -- a 1953 ad for advertising agency Charles Cooper touting one of their artists, Kenneth Fagg. He's best-remembered for some If magazine covers (attached is my favorite), but look under the letter "M" in the ad you'll see a more famous name.pic.twitter.com/HH8mApUzRg
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Winchell Chung proslijedio/la je Tweet
I have long wondered if silicon life requires carbon based life as a starter.
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Winchell Chung proslijedio/la je Tweet
Uranium isn’t collocated with other metals in the crust. Cadmium is, if you find enough zinc. And there’s apparently no consensus on U being in the core at all.https://earthscience.stackexchange.com/questions/4798/what-percent-of-the-earths-core-is-uranium#4802 …
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Winchell Chung proslijedio/la je Tweet
I gripe a lot about bad design on here, and sometimes give examples of Bad, but for once, I can show you literally the best design I have ever seenpic.twitter.com/1SD59k8lDw
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Winchell Chung proslijedio/la je Tweet
Remote defensive M24 cannon turrets on the B-36 Peacemaker bomber.pic.twitter.com/4MeSmWndje
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Winchell Chung proslijedio/la je Tweet
Hmmm... That's my uncredited artwork on the lander comparison.
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Winchell Chung proslijedio/la je TweetHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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Winchell Chung proslijedio/la je Tweet
Add in the fact that most advanced rocket designs use 233U or 242mAm, both being bred fuels (and Th more common than U), changes the equation somewhat
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Winchell Chung proslijedio/la je Tweet
We don’t need metal in asteroids nearly as much as we need nuclear fuel. And a huge proportion of that is mined on Earth in concentrations that occurred because of the mechanisms that I described.
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Winchell Chung proslijedio/la je Tweet
But, you have to realize that some asteroids are chunks of larger asteroids, so it’s possible to find chunks of metal which were once in the core of old asteroids.
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Winchell Chung proslijedio/la je Tweet
Not a bad supposition. Even your bog-standard NERVA was mostly automated in the details of its operation, after all. You'd sign for current rad flux, flux profile vs energy produced, etc. for your mission, and then have it auto-return. Repo on-mission would suck though...
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