DDE Posted June 30, 2021 Share Posted June 30, 2021 25 minutes ago, magnemoe said: However for an focused study of one site humans has benefits. Like how we tried to drill an hole on Mars to study environment some meter down and seismic. It failed, an manned mission would done better here, bring an drill rig and do core samples. Spoiler Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted June 30, 2021 Share Posted June 30, 2021 1 hour ago, magnemoe said: Or just put up an base at Shackleton crater as its probably the most valuable prime estate off earth. 2040. Shackleton crater is renamed into Shacklefort Airless Force Base. The only question unknown. Spoiler Shell or Exxon? Quote Link to comment Share on other sites More sharing options...
SOXBLOX Posted June 30, 2021 Share Posted June 30, 2021 2 hours ago, kerbiloid said: Airless Force Imma call USSF this now. Quote Link to comment Share on other sites More sharing options...
SOXBLOX Posted June 30, 2021 Share Posted June 30, 2021 This is interesting... The Lockheed Martin F-35, the much-criticized miracle jet, just won Switzerland's fighter procurement competition based on its technological merits and its low cost. Both up-front procurement costs and 30-year operating costs were determined to be lower than the next (undisclosed) competitor; the operating costs by over $2 billion. Here's the article. Quote Link to comment Share on other sites More sharing options...
DDE Posted July 1, 2021 Share Posted July 1, 2021 8 hours ago, SOXBLOX said: This is interesting... The Lockheed Martin F-35, the much-criticized miracle jet, just won Switzerland's fighter procurement competition based on its technological merits and its low cost. Both up-front procurement costs and 30-year operating costs were determined to be lower than the next (undisclosed) competitor; the operating costs by over $2 billion. Here's the article. I'm going to agree with the article's utter puzzlement. Horror stories about RAM coating maintenance abound, although the readiness of the Luftwaffe's Typhoons is way, way worse than even that. Quote Link to comment Share on other sites More sharing options...
SOXBLOX Posted July 1, 2021 Share Posted July 1, 2021 7 hours ago, DDE said: I'm going to agree with the article's utter puzzlement. Horror stories about RAM coating maintenance abound, although the readiness of the Luftwaffe's Typhoons is way, way worse than even that. I'd point out that the F-35's RAM is baked in to the composite skin. Apparently it doesn't require anywhere near the same kind of maintenance as the F-22's coating. There's some process involving lasers that happens, but it's not even a monthly thing. Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted July 4, 2021 Share Posted July 4, 2021 Would it be feasible to slap some cheap hardware on SX Starlink sats and create a global sized array telescope? Quote Link to comment Share on other sites More sharing options...
Admiral Fluffy Posted July 4, 2021 Share Posted July 4, 2021 3 minutes ago, JoeSchmuckatelli said: Would it be feasible to slap some cheap hardware on SX Starlink sats and create a global sized array telescope? Yes, but I don't see why you would do that. Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted July 4, 2021 Share Posted July 4, 2021 5 minutes ago, Admiral Fluffy said: Yes, but I don't see why you would do that. What's the downside? Quote Link to comment Share on other sites More sharing options...
Admiral Fluffy Posted July 4, 2021 Share Posted July 4, 2021 Just now, JoeSchmuckatelli said: What's the downside? Good point. There is no reason why, but there is also no reason why not. Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted July 4, 2021 Share Posted July 4, 2021 20 minutes ago, Admiral Fluffy said: Good point. There is no reason why, but there is also no reason why not. I'm not sure. Having read about some of the stuff discovered by the few ground based telescopes linked in an array, and reading of plans for an optical scope larger than Webb... It seems like a bunch of constellation scopes on different trajectories around the planet could give us a planet sized telescope with pretty good resolution Quote Link to comment Share on other sites More sharing options...
SOXBLOX Posted July 4, 2021 Share Posted July 4, 2021 I think it would work for radio, but IDK about optical. You need precise knowledge of distances between sensors for that... Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted July 4, 2021 Share Posted July 4, 2021 1 hour ago, SOXBLOX said: I think it would work for radio, but IDK about optical. You need precise knowledge of distances between sensors for that... Now that you mention that, I do remember some talk about effective arrays requiring some math and knowledge of distances... But I didn't know it needed much precision. So in that case, while a sat-constellation array might be feasible, it's not likely something we can do cheap by hitched rides on other satellites Quote Link to comment Share on other sites More sharing options...
SOXBLOX Posted July 4, 2021 Share Posted July 4, 2021 Pretty sure the precision is related to the wavelength of the waves you're studying. So, radio scopes can deal with precisions of a couple meters, but optical needs precisions measured in nanometers. Here's the wiki page on the radio version of this. The name of the technique is Very Long Baseline Interferometry. The trouble seems to be the methods. Current optical interferometry actually uses mirrors to bring the light from multiple telescopes together, while radio scopes record the data separately, with a timestamp from an atomic clock. Then, the data is combined in a computer. Here's a set of much better answers: https://astronomy.stackexchange.com/questions/29082/is-optical-vlbi-theoretically-feasible-if-not-why-not Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted July 5, 2021 Share Posted July 5, 2021 (edited) 6 hours ago, SOXBLOX said: radio scopes record the data separately, with a timestamp from an atomic clock My impression was that interferometry was best suited for radio telescopes - so that's what I was thinking when I asked the question. Webb is optical / near visual spectrum AFAIK. Hence the mirror and etc. But the scattered array that caught sight of the BH were all radio scopes around the world. What I was thinking is that with a sat. constellation they could get higher resolution Edited July 5, 2021 by JoeSchmuckatelli Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted July 5, 2021 Share Posted July 5, 2021 Idk about the astronomy, but probably they would first use this to spy the ground, if they could. Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted July 5, 2021 Share Posted July 5, 2021 18 minutes ago, kerbiloid said: Idk about the astronomy, but probably they would first use this to spy the ground, if they could. Meh - we've been spying the ground for a long time. Just look at the recent photos of the Chinese ICBM field. I want to spy stuff far from here - and see if there are any habitable planets around 18 Sco Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted July 5, 2021 Share Posted July 5, 2021 If you were to be space walking... would seeing the 'naked' sun freak you out? (The atmosphere protects us from most of the bad stuff) Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted July 5, 2021 Share Posted July 5, 2021 35 minutes ago, JoeSchmuckatelli said: Meh - we've been spying the ground for a long time. Just look at the recent photos of the Chinese ICBM field. But with this - in real-time 3d. 15 minutes ago, JoeSchmuckatelli said: If you were to be space walking... would seeing the 'naked' sun freak you out? So they invented the golden visor. Quote Link to comment Share on other sites More sharing options...
DDE Posted July 5, 2021 Share Posted July 5, 2021 Fire in the Caspian Sea next to an Azeri oil rig is officially dismissed as a mud volcano. Or, as the cultured people call it, Spoiler ...swamp gas Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted July 5, 2021 Share Posted July 5, 2021 10 minutes ago, DDE said: mud volcano. The mudcrabs ate the gas pipe. Nothing to look at. Spoiler It could be worse. Spoiler Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted July 5, 2021 Share Posted July 5, 2021 I always believe official denials So easy to dismiss what the government does not want me to think about Quote Link to comment Share on other sites More sharing options...
Silavite Posted July 7, 2021 Share Posted July 7, 2021 What kind of injector did the XLR99 use? Searching for documents or photos has not been fruitful thus far. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted July 7, 2021 Share Posted July 7, 2021 Flickr?https://www.flickr.com/photos/tags/xlr99/page1 (They also have some tech annotations) Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted July 7, 2021 Share Posted July 7, 2021 (edited) What does the theory of cosmology that the universe is largely homogeneous at large scales get us? This recent article discusses it, but does not explain why it is a fundamental part of the accepted understanding of the distribution of matter https://www.google.com/amp/s/www.sciencenews.org/article/galaxy-giant-arc-3-billion-light-years-long-cosmology-space/amp (confusing b/c when you read about things like the Lanakai Supercluster you get the impression that gravity does impart some sense of organization to the distribution of galaxies / matter, which seems inimical to the concept of homogeneous distribution) Edit: @K^2 are you willing to take a stab at helping me understand this? Edited July 8, 2021 by JoeSchmuckatelli Quote Link to comment Share on other sites More sharing options...
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