muon* Posted June 10, 2021 Posted June 10, 2021 (edited) 2 hours ago, LHC said: I wish to hear the consensus of the SNA community here interested in the topic of this thread. As you would know, or heard wind of, later this month the US Government will release publicly an official declassified report on UFO/UAP. From various recent mass media articles who claimed knowledge of the report - the report will not be conclusive about the origin of these phenomena, nor does it rule out the possibility of an alien origin. Given the likely ambiguity of its conclusion, is it worthwhile to discuss the findings of the report as a separate thread? I feel the answer should be 'no'. We had many failed attempts to discuss aliens and UFO in a friendly and civil manner, getting many threads shutdown by moderators. I am not optimistic that things will be any different this time around due to the ambiguity. So I proposed that we will announce it as a 'Science News' in this thread when the report does drop, and then move on to other worthy Science news. What do you think? Yeah I agree, just let it pass, they remain unidentified, that's it. Believing the UAP's to be the result of extraterrestrial visitors is an extraordinary leap, one that would require a 'faith' level leap to get there. Belief is not evidence, so belief devoid of evidence based discussion puts the discussion in the same space as religious discussion IMO. I'm comfortable with the answer being "we don't know what they are", I need nothing else. Edited June 10, 2021 by muon*
oztheatre Posted June 11, 2021 Posted June 11, 2021 Interesting bit here via ALMA. Cosmic cartographers map nearby Universe revealing the diversity of star-forming galaxies. A team of astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) has completed the first census of molecular clouds in the nearby Universe, revealing that contrary to previous scientific opinion, these stellar nurseries do not all look and act the same. In fact, they’re as diverse as the people, homes, neighborhoods, and regions that make up our own world. https://public.nrao.edu/news/alma-phangs-stellar-nursery-census/?fbclid=IwAR3RaIogzxmg59PTB_cMoIFJH11kaVT1LuUhrENvrfWf44nb-PdzEn8QJOk 2
oztheatre Posted June 18, 2021 Posted June 18, 2021 This looks like it will have some use.. From UNSW too. Extraordinary new material shows zero heat expansion from 4 to 1,400 K Australian researchers have created what may be one of the most thermally stable materials ever discovered. This new zero thermal expansion (ZTE) material made of scandium, aluminum, tungsten and oxygen did not change in volume at temperatures ranging from 4 to 1400 Kelvin (-269 to 1126 °C, -452 to 2059 °F). https://newatlas.com/materials/thermally-stable-zte-advanced-material/?fbclid=IwAR1OTi-lNVwOfG7D_Loz1lIj2qt3W4AxQv7Ypm6klXlvJDeljwaQUNpdTXo 2
Volunteer sir sanders zingmore Posted June 18, 2021 Volunteer Posted June 18, 2021 From the same website https://newatlas.com/materials/ultralight-acoustic-insulation-aerogel/ potential hifi application 1
LHC Posted June 26, 2021 Posted June 26, 2021 (edited) As agreed, the US has released their official report on UAP (Unidentified Aerial Phenomena) - available from this link https://www.dni.gov/index.php/newsroom/reports-publications/reports-publications-2021/item/2223-preliminary-assessment-unidentified-aerial-phenomena I've only read the executive summary, and as was anticipated, they summarised the analysis of available data on 144 UAP reports since 2004, finding 143 of them could not be explained. So no conclusions can be drawn at this time. Some interesting points made were: Most of the UAP reported probably do represent physical objects given that a majority of UAP were registered across multiple sensors In a limited number of incidents, UAP reportedly appeared to exhibit unusual flight characteristics. These observations could be the result of sensor errors, spoofing, or observer misperception and require additional rigorous analysis Our analysis of the data supports the construct that if and when individual UAP incidents are resolved they will fall into one of five potential explanatory categories: airborne clutter, natural atmospheric phenomena, USG or U.S. industry developmental programs, foreign adversary systems, and a catchall “other” bin. Basically they haven't rule anything out. And that is all folks. Edited June 26, 2021 by LHC
oztheatre Posted June 29, 2021 Posted June 29, 2021 This is a really good tool if you have not seen before https://earth.nullschool.net Lots of features. Check out the waves, see if the 'surfs up dude' lol. 1
oztheatre Posted June 29, 2021 Posted June 29, 2021 Hats off to this brilliance. Cryo–electron microscopy breaks the atomic resolution barrier at last Now, for the first time, scientists have sharpened cryo-EM’s resolution to the atomic level, allowing them to pinpoint the positions of individual atoms in a variety of proteins at a resolution that rivals x-ray crystallography’s. “This is just amazing,” says Melanie Ohi, a cryo-EM expert at the University of Michigan, Ann Arbor. “To see this level of detail, it’s just beautiful.” Because the heightened resolution reveals exactly how complex cellular machines carry out their jobs, improvements in cryo-EM should yield countless new insights into biology. https://www.sciencemag.org/news/2020/10/cryo-electron-microscopy-breaks-atomic-resolution-barrier-last?utm_campaign=SciMag&utm_source=Social&utm_medium=Facebook&fbclid=IwAR23__E97tjzWsCoppl4QKqxHa2hPSFpfqDko9lscNSPeeFdwyjISLyCOeQ 2
mrbuzzardstubble Posted June 29, 2021 Posted June 29, 2021 https://www.abc.net.au/news/science/2021-06-30/five-thousand-year-old-man-oldest-plague-strain/100249528
oztheatre Posted July 1, 2021 Posted July 1, 2021 ^ speaking of things old, they recently found 'dragon man' a 146,000 year old skull measuring 23 x 15 inches in size in China, made Andre the giant look like a baby. Yet another 'stuff just keeps on getting older' forcing their hand to re think how complete our theory of evolution really is.
Grant Slack Posted July 5, 2021 Posted July 5, 2021 But is that bringing into question the completeness of the theory of evolution, or, more likely IMHO, just the details of the story of man? 1
Satanica Posted July 5, 2021 Posted July 5, 2021 On 01/07/2021 at 9:45 AM, oztheatre said: ^ speaking of things old, they recently found 'dragon man' a 146,000 year old skull measuring 23 x 15 inches in size in China, made Andre the giant look like a baby. Yet another 'stuff just keeps on getting older' forcing their hand to re think how complete our theory of evolution really is. Huh? If you're referring to this one: https://www.cbsnews.com/news/dragon-man-skull-found-china-evolution/ ... then the article says it is about 9 X 6 inches. "One of the most remarkable aspects of the Harbin cranium is its massive size, which, at 9 inches long and more than 6 inches wide, is significantly larger than the modern human skull. The skull also has a cranial capacity of approximately 1,420 milliliters or 48 fluid ounces. That falls into the cranial capacity range of modern humans..." 1
davewantsmoore Posted July 5, 2021 Posted July 5, 2021 20 minutes ago, Satanica said: significantly larger than the modern human skull. Red meat consumption vs plant agriculture
Satanica Posted July 5, 2021 Posted July 5, 2021 21 minutes ago, davewantsmoore said: Red meat consumption vs plant agriculture Or perhaps like Andre the Giant acromegaly which is a health condition that causes more than ideal growth hormone to be secreted into the body.
oztheatre Posted July 5, 2021 Posted July 5, 2021 (edited) 4 hours ago, Satanica said: Huh? If you're referring to this one: https://www.cbsnews.com/news/dragon-man-skull-found-china-evolution/ ... then the article says it is about 9 X 6 inches. "One of the most remarkable aspects of the Harbin cranium is its massive size, which, at 9 inches long and more than 6 inches wide, is significantly larger than the modern human skull. The skull also has a cranial capacity of approximately 1,420 milliliters or 48 fluid ounces. That falls into the cranial capacity range of modern humans..." One article said 15 x 23 cm which is the size of a normal skull. It's a typo me thinks as not that is not large at all. 6 x 9 inch is the size of a childs skull. here we go Edited July 5, 2021 by oztheatre
oztheatre Posted July 5, 2021 Posted July 5, 2021 2 hours ago, Grant Slack said: But is that bringing into question the completeness of the theory of evolution, or, more likely IMHO, just the details of the story of man? Yes the evolution of man. These anomalies keep popping up causing them to re think things. The more you dig the more you find.
zippi Posted July 22, 2021 Posted July 22, 2021 Don't know how new or whatever this actually is, however i find it super fascinating. Try and guess what it is.... Apparently electron scanning microscope and a few resonant technologies were used to obtain a super detailed image of a ......... human cell. A single cell. Quite impressive definition of the nucleus, mitochondria, fat reserves and many other things I have no clue about. 1
GregWormald Posted July 22, 2021 Posted July 22, 2021 Not exactly new but news to me, and I related it to global warming. For chemical reactions at close to room temperature each 10°C increase doubles the speed of the reaction. So, for a 2°-3° increase—warm air takes up much more water--drier droughts, and much more rain when it happens. Rain dissolves more nutrients in the soil and the increased run-off depletes the soil and pollutes the rivers, lakes and oceans. Oxidation happens 20-30% faster. That's as far as I got before I really realised the magnitude of the problems. 2
LHC Posted July 28, 2021 Posted July 28, 2021 "Scientific endeavour should never stop, it's part of the process to keep seeking answers, even when it's very hard." - Dr Cathy Foley, Australia's Chief Scientist 28/7/2021 1
Gambit 1870 Posted July 29, 2021 Posted July 29, 2021 (edited) Any of you guys follow a podcast called Spacenuts? It's an Aussie based podcast delivered each week by an ABC broadcaster Andrew Dunkley and professor Fred Watson who is an English astronomer who has resided in Oz for years. There are around 260 30-40min episodes of light hearted but informative discussion on all things space related. They encourage audience based questions which they answer each episode. It's gaining a bit of a cult following and rates in the top percentile for its category. Anyway if you haven't heard of it check it out if astronomy/space is your thing https://spacenutspodcast.com Jason Edited July 29, 2021 by Gambit 1870 1
aussievintage Posted August 12, 2021 Posted August 12, 2021 On 22/07/2021 at 2:33 PM, GregWormald said: For chemical reactions at close to room temperature each 10°C increase doubles the speed of the reaction. On 22/07/2021 at 2:33 PM, GregWormald said: Oxidation happens 20-30% faster. You do see the contradiction here? It's loose science like this that starts me doubting what I am reading.
Volunteer sir sanders zingmore Posted August 12, 2021 Volunteer Posted August 12, 2021 11 minutes ago, aussievintage said: You do see the contradiction here? It's loose science like this that starts me doubting what I am reading. What’s the contradiction?
aussievintage Posted August 12, 2021 Posted August 12, 2021 Just now, sir sanders zingmore said: What’s the contradiction? 20-30% faster is NOT double the speed?
Volunteer sir sanders zingmore Posted August 12, 2021 Volunteer Posted August 12, 2021 1 minute ago, aussievintage said: 20-30% faster is NOT double the speed? Of course not. But that’s not what was claimed. The 20-30% increase is stated as part of the bit that talks about a 2°-3° increase. Assuming it scales linearly you get doubling at 10°c increase.
aussievintage Posted August 12, 2021 Posted August 12, 2021 Just now, sir sanders zingmore said: Of course not. But that’s not what was claimed. The 20-30% increase is stated as part of the bit that talks about a 2°-3° increase. Assuming it scales linearly you get doubling at 10°c increase. Oh. Oh well, colour me suitably embarrassed. Back in my hole I go... 1
Steffen Posted August 12, 2021 Posted August 12, 2021 6 hours ago, sir sanders zingmore said: Assuming it scales linearly you get doubling at 10°c increase. Ah, but a doubling every ten degrees isn’t linear, it’s exponential. From what I remember, the “doubling of reaction speed every ten degrees” rule of thumb is mainly a thing in organic chemistry.
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