Tuesday, December 31, 2019

SPACE - S0 - 20191231 - Fire, Planets, Oceans, and the Stars

SPACE - S0 - 20191231 - Fire, Planets, Oceans, and the Stars

Good Morning, Observers!

   
   
Solar winds remain calm, although we did have a rise to around 320 KPS, but that's calmed back down to just below 300 KPS at last report. The KP Index finally went up a bit to the KP-1 range, with a KP-2 when the solar winds "peaked". Coronal hole structures are wishy-washy at best (yes, that's a scientific term, folks), and the bright spot whose sunspot activity dissolved well before reaching the meridian has pretty much moved out of the danger zone without so much as a electromagnetic burp. Lithospherically, it's been a bit of a snooze-fest, with only blot echo activity and a (very) few Mag 5.0s and 5.1s. A good way to end a year.
   
And speaking of the end of the year, Ben Davidson has posted a follow-up on his Disaster Series on "Safe Zones". I am reminded of the Hoosier State's Unofficial Motto... - "Indiana - Three Billion Years, Tsunami-Free!"
   
   
Enjoy Your New Year's Eve, Folks!
  
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Physicists create highly efficient rocket fuel

DECEMBER 31, 2019, by Ksenia Akentyeva, Tomsk State University

Credit: CC0 Public Domain

Scientists at the Faculty of Physics and Engineering, working with the Tomsk company Scientific and Production Center Chemical Technologies, have created and tested an improved model of a hybrid rocket engine. The team synthesized new fuel components that increased its calorie content, and therefore its efficiency.

The development emerged from a project to improve the design of a solid-fuel hybrid rocket engine and the fuel used in such engines. The scientists mathematically modeled an optimized engine and made fuel compositions based on aluminum diboride and dodecaboride. This is one of the most promising areas increasing fuel efficiency.

Rocket fuel with the addition of the components proposed by TSU specialists is distinguished by the highest calorific value, which characterizes fuel efficiency. Alexander Zhukov, professor at the Department of Mathematical Physics says that boron is the highest-energy solid component known today, but directly introducing it into the fuel is inefficient because a dense oxide film forms, leading to a high degree of burning out. But in combination with aluminum, boron burns well and increases energy.

"What is widely used today in rocket fuel is not chemical compounds, but, as a rule, a mixture of aluminum and boron. These are completely different things. Our technique for the synthesis of polyborides is quite unique and effective, and it has become one of the main achievements in the course of the project," said Alexander Zhukov. "The materials went through all the necessary research and certification, we calculated the burning rate and calorific value of the resulting fuel, and our partner, Chemical Technologies, mastered the production of these borides and other compounds."

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Strange string of lights in Manitoba spark confusion, intrigue

Monday, December 30th 2019, 3:26 pm - 'I was kind of in awe of what I was witnessing,' said woman who spotted the lights in St. Claude, Man.

(Image: Shannon Letendre snapped a photo of a row of lights spotted from central Manitoba's Interlake region on Friday. Submitted by Shannon Letendre/Facebook via CBC News)

Evelyne Bosc was out for a walk when she saw them.

"They were all perfectly aligned, and perfectly spaced from one to the other," she said. "It was very odd."

Bosc said she was passing the cemetery near her St. Claude, Man. home around 6:30 p.m. Thursday when she looked west and saw a line of 14 lights slowly passing over her in the sky.

The lights were only visible for about two minutes before they disappeared, Bosc said.

"It was kind of a bit scary, because it's something I've never seen. But then I was kind of in awe of what I was witnessing," she said. "I just thought at first it was like a constellation [of stars]… Then I realized it was certainly not that, that it had to be something more unusual."

Shannon Letendre posted to Facebook about the bizarre row of lights she saw slowly move upwards before disappearing into the clear night sky above Dauphin River 48A, a community located about 256 kilometres north of St. Claude.

Scott Young, who manages the planetarium and science gallery at the Manitoba Museum, said the strange lights dotting the sky — which have also been reported near La Rivière, Man. and Eriksdale, Man. — can likely be attributed to the Starlink constellation of satellites.

"Usually they're pretty faint, they're pretty hard to see, but it turns out that starting on Boxing Day we just happened to have circumstances aligned so that they were coming right over Winnipeg just as the sun is setting," he said.

Young said because the satellites were all launched on the same path, they will stay clustered together for several days, which is why they're appearing as lines of dots in the sky.

"So the sky is dark, but up at orbital height it's still bright, and so the sunlight from the sun is shining off of these satellites and making them bright enough to see with the unaided eye," he said.


'LIKE THE WILD WEST'
The Starlink constellation is a project by aerospace company SpaceX, which will eventually launch 12,000 satellites into space to provide improved internet access across the world.

"It's basically the spread of telecommunications. Originally, it was radio waves, and then phone lines and now satellites," Young said.



"Whenever I see a satellite, I'm amazed that we live on a planet that we can actually make things that can go to the stars. That's pretty impressive … It's really sort of a reminder that humanity can do really amazing, sometimes impossible, things. All we have to do is put our mind to it."

But Young said there can be problems that come with having more satellites floating around in space. Astronomers who rely on long-exposure photography for their work are having their frames cluttered up with streaks of light from the satellites, he said.

Having more pieces of equipment in orbit also increases the risk of the satellites colliding and being destroyed, or putting human spaceflight at risk.

"Space is big, but it's not infinite, and it's already starting to get fairly crowded up there in orbit," he said.

"It's kind of like the Wild West up there, where if you've got the money you can pretty much launch stuff into space and nobody's going to stop you."

Young said there isn't any evidence to suggest anything bad will come from the satellites, which is partially because it's still too early to know the long-term effects.

"The problem is nobody's telling these companies to do anything about it, so they're not going to do long-term studies because it's not really germane to their interests," he said. "There's no real regulation."

Young said the satellites will likely be visible in the Manitoba sky between 5:30 and 6 p.m. for the next week or so.

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Monday, December 30, 2019

SPACE - S0 - 20191230 - The Sun Can Superflare, Ionosphere Manipulation, Snow

SPACE - S0 - 20191230 - The Sun Can Superflare, Ionosphere Manipulation, Snow

Good Morning, Observers!

   
   
The KP-0 trend continued all day yesterday, with a few KP-1s overnight (latest reading is back to zero). A Cosmic Ray Alert was released again at 2100 last night, with a 45-hour average KP reading of 0.13, and a cosmic ray spike showed up on the detectors. Again, watch over for those with psychiatric, cardiac, or autoimmune issues. The coronal holes are a bit weak and disorganized, but hopefully they will blow a bit more solar wind our way to clear out the cosmic radiation. The speed dipped to around 280 at its lowest, now hovering around 290 KPS. The lithosphere was pretty quiet, with only a few low Mag 5+ temblors and lesser blot echo activity.
  
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Space - Massive ‘Betelgeuse’ star in Orion constellation due for explosive supernova

Massive ‘Betelgeuse’ star in Orion constellation due for explosive supernova


By Hannah Sparks, New York Post,  December 26, 2019

This image, taken aboard NASA's Hubble Space Telescope, is the sharpest view ever of the Orion. NASA, ESA, M. Robberto (Space Team)
Orion is one of the most well-known constellations across the universe — but the mythical warrior may be missing his right shoulder before long.
The giant red star known as Betelgeuse, situated almost perpendicular to Orion’s belt, has rapidly dimmed since October. By mid-December, the once shining star, usually among the top 10 brightest stars in the sky, had plummeted out of the top 20, reported Villanova University’s Edward Guinan in an Astronomer’s Telegram.
“Now the outline of Orion is noticeably different with Betelgeuse so faint,” said Guinan.
Astronomers have pointed out that the light of Betelgeuse, what astronomers call a “semi-regular variable star,” is known for fluctuating brightness. Yet, the rapid dimming as of late is unusual, they say, prompting them to wonder if the star’s spectacular demise is approaching. The explosive death of a star, also called a supernova, would cause Betelgeuse to suddenly burn even brighter before vanishing forever.
“The biggest question now is when it will explode in a supernova,” said Sarafina Nance, a UC Berkeley astrophysics researcher, on Twitter. The 8.5 million-year-old star probably “isn’t exploding any time soon,” she added in the tweet thread, “but will be a gorgeous spectacle” when it does.
The giant red Betelgeuse star is 20 times the mass of the Earth’s sun.ESA/Herschel/PACS/L. Decin et al

The massive Betelgeuse is 20 times the mass of our sun, and would engross Mercury, Venus, Earth, Mars, the asteroid belt and possibly even Jupiter if we were to supplant that star into our own solar system. It’s also one of the Milky Way’s closest neighbors at just 600 light-years away. But the explosion associated with the star’s demise won’t have any effect over life on Earth — aside from a good show — before fading into eternity.
Betelgeuse’s supernova “would be so incredibly cool!” Nance told National Geographic. “By far and away the most incredible thing to happen in my life.”
Unfortunately, we have no idea when the main event will go down. If the star continues to fade for another couple of weeks, “then all bets are off,” Guinan also told NatGeo. Recent studies have predicted that it will happen within the next million years, and as soon as 100,000 years from now. And there’s the possibility that it already exploded, possibly hundreds of years ago. We just haven’t waited long enough to see its impacts on the night sky.
“It’s actually quite rare to study a star this well pre-explosion, whenever that happens,” said Nance. “This will inevitably yield cool and interesting ideas for what happens to stars right before they explode.”
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Technology - Tesla days away from delivering first Chinese Model 3 cars

Tesla days away from delivering first Chinese Model 3 cars


By Noah Manskar,  New York Post,  December 27, 2019

Elon Musk,  AP photo

Drivers are days away from getting their hands on Tesla’s first Chinese-made cars.
Elon Musk’s electric automaker plans to deliver the first batch of Model 3 sedans produced at its Shanghai factory on Monday, a Tesla representative said.
A lucky group of Tesla employees will receive the first 15 cars on Dec. 30 — less than a year after the company broke ground on its first factory outside the US, according to the representative.
Tesla shares were up about 1 percent at $435.37 in premarket trading as of 8:51 a.m. Friday amid news of the China deliveries.
China’s industry ministry also granted Tesla an exemption from a purchase tax for the Model 3, the automaker announced Friday. That means customers will have to pay less for the sedan, which is priced at about $50,000, according to Bloomberg News.
Silicon Valley-based Tesla began production at its multibillion-dollar Shanghai factory in October. The company has said it plans to build 250,000 vehicles there each year after the addition of its Model Y crossover.
Reports that Tesla may cut Chinese Model 3 prices next year sent Tesla’s stock soaring last week before its share price crossed $420 on Monday. That’s the price at which Musk, Tesla’s billionaire CEO, infamously said he was considering taking the company private last year. The US Securities and Exchange Commission forced Musk to pay a $20 million penalty over his Twitter statement.
With Post wires
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Sunday, December 29, 2019

The Top Retractions of 2019

Dec 16, 2019, RETRACTION WATCH


Another year, another 1,433 (and counting) retractions. The tenth year of Retraction Watch’s existence included—as is often the case—a new record, some impressive numbers, and some bizarre stories. But it also included some exemplary behavior. Here are some of the year’s top retraction stories, in no particular order:

1. When researchers reported in September of 2018 that they’d found a way to open solid tumors to the enormous potential of chimeric antigen receptor (CAR) T cell therapies, the oncology world was abuzz. But not for long. Critics of the study, which appeared in Nature, soon began poking holes in the work, pointing to problems with some of the figures in the paper. Nature initially alerted readers that it was looking into the validity of the work, but in February the journal decided it had no choice but to retract the paper, citing “issues with figure presentation and underlying data.” The retraction claimed an innocent bystander when The New England Journal of Medicine pulled a January 2019 review of CAR T therapy that had included an overview of the Nature findings.

2. When Pediatric Research retracted a 2013 paper by Erin Potts-Kant and colleagues in September, the article became the 18th retraction for the former Duke University researcher. But officials at the institution likely had a bigger number on their minds this year: $112.5 million. That’s the amount Duke agreed to pay the US government after a whistleblower alleged that Potts-Kant had used phony data in scores of grant applications worth tens of millions of dollars to the school. That whistleblower earned nearly $34 million.

3. Speaking of numbers, an unlucky journal had to retract 434 papers—a record, as far as we know—in one go. The papers, which had appeared in the Journal of Fundamental and Applied Sciences, comprised the proceedings of a 2018 conference of the Universal Society for Applied Research. But in May, Clarivate Analytics delisted the journal from its Web of Science—a Good Housekeeping seal of sorts for scholarly publications—prompting the society to recall the papers and seek a new and more reputable home for them.

4. As the college bribery scandal unfolded in US courtrooms this year, South Korea had its own version of the tawdry affair. Caught in the controversy was Cho Kuk, who until recently was the country’s justice minister before stepping down amid outcry that he had helped his family members, and particularly his daughter, obtain unearned privileges at universities. Kuk resigned his post in October, shortly after the Journal of Pathology and Translational Medicine (then the Korean Journal of Pathology) retracted a 2009 paper on which his daughter, at the time a high-school student, had been first author. According to Reuters, Cho’s daughter went on to medical school at Pusan National University where she failed her examinations twice but managed to stay enrolled and receive nearly $10,000 in scholarships.

5. In October 2018, a group of climate scientists published a troubling report in Nature claiming that the world’s oceans were warming far faster than previously believed. Not surprisingly, the research immediately became the target of skeptics, who claimed the analysis was incorrect. The authors quickly notified Nature of the potential problems, and in November 2018, the journal alerted readers in an expression of concern. But in September, Nature decided that the uncertainties in the work were too significant to let stand and retracted the paper. The authors said they planned to correct their analysis and resubmit the work to a different journal.

6. If having a paper retracted is traumatic, imagine how Steve Jackson feels. Jackson, of the University of Cambridge in England, lost articles in both Science and Nature on the same day after his coauthor was found to have committed research misconduct. Investigators at the school concluded that Jackson’s collaborator, Abderrahmane Kaidi, who resigned from his post at the University of Bristol in September 2018, had fabricated data in at least one of the papers, both of which were highly cited.
7. The journal Magnetochemistry found itself looking a bit, um, bipolar earlier this year after it retracted a paper by a controversial psychologist in New Zealand. The invited commentary, by Susan Pockett, claimed that government reports about the safety of radiofrequency emissions were tarnished by rampant conflicts of interest. To bolster the piece, Pockett said, the editors asked her to add some data, which she did—by buying an off-the-shelf RF meter and standing at a bus stop taking measurements of ambient radiation. Those tests didn’t impress at least one reader, whose complaints prompted the journal to remove the article, writing that the work “contains no scientific contribution and that Magnetochemistry is not the appropriate forum for this kind of ‘opinion’ publication.”

8. When Gesine Dreisbach, a psychologist at the University of Regensburg in Germany, ran into a friend at a research conference earlier this year, she wasn’t expecting bad news. But the friend-cum-colleague, with whom Dreisbach had shared some of her group’s data, told her that a 2018 paper in Acta Psychologica based on the data had a coding error in the script used to assess the results—an error significant enough to scuttle the entire analysis. Dreisbach rushed back to her lab and checked: the friend was correct. Once she knew that the work was fatally flawed, Dreisbach contacted the journal and asked for a retraction. “We all understood immediately that clarity and transparency is the only way to deal with this mistake,” she said of the episode.

9. Call them peer review pirates. A pair of researchers in India was caught having stolen a paper during the review process and publishing it under their own names in a journal run by the UK’s Royal Society of Chemistry. The 2017 article, which appeared in CrystalEngComm, was ostensibly written by Priyadarshi Roy Chowdhury and Krishna G. Bhattacharyya, of Gauhati University in Jalukbari. But according to the journal, the work had “striking similarities” to a manuscript by two other scientists submitted to the journal Dalton Transactions that one of the authors had reviewed. CrystalEngComm retracted the offending article.

10. “And now, a study from our sponsors.” In April, PLOS ONE retracted a 2017 article about mindfulness after concluding that the authors—at the Benson-Henry Institute for Mind Body Medicine at Massachusetts General Hospital—had ignored their commercial interests in the research and made other errors. The article, “Standardised mindfulness-based interventions in healthcare: An overview of systematic reviews and meta-analyses of RCTs,” initially listed no financial ties. But psychologist James Coyne complained that some of the researchers were employed by Benson-Henry—including Herbert Benson himself—and that the paper appeared to be a thinly disguised “experimercial” pushing the institute’s own products and services. He also noted that the academic editor on the paper was herself at Harvard, Mass Gen’s medical school partner, another conflict. A review by PLOS ONE agreed with Coyne, and also turned up several problems with the meta-analysis itself, and opted to retract.


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SPACE - S0 - 20191229 - Cosmic Ray Alert, Quake News, Amazing M51

SPACE - S0 - 20191229 - Cosmic Ray Alert, Quake News, Amazing M51

Good Morning, Observers!

   
   
Very calm solar wind levels continue, dropping to around 300 KPS. The last day has only had one KP-1 reading, all the rest below that at KP-0, so be prepared to keep your eyes open for those with psychiatric, cardiac, or autoimmune issues. Hopefully, the coronal holes that just passed the midpoint and a few more trailing ones approaching it will blow away any cosmic radiation risks soon, but we probably won't see their effects for at least 36 to 48 hours. The only quake of note was a Mag 5.5 some 265 KM NNW of the Prince Edward Islands (well off the coast of South Africa), but there was a Mag 5.0 South of Puerto Rico's "Isla de Gilligan" (no kidding, that's an actual place). Gee, I hope Ginger and Mary Ann are okay...
   
Another extra video, a follow-up in the Disaster Series on Giant Waves...
   
  
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Defense - New Russian weapon can travel 27 times the speed of sound

New Russian weapon can travel 27 times the speed of sound


By Associated Press,  December 27, 2019

In this photo taken from undated footage distributed by Russian Defense Ministry Press Service, an intercontinental ballistic missile lifts off from a silo somewhere in Russia. AP photo

MOSCOW — A new intercontinental weapon that can fly 27 times the speed of sound became operational Friday, Russia’s defense minister reported to President Vladimir Putin, bolstering the country’s nuclear strike capability.
Putin has described the Avangard hypersonic glide vehicle as a technological breakthrough comparable to the 1957 Soviet launch of the first satellite. The new Russian weapon and a similar system being developed by China have troubled the United States, which has pondered defense strategies.
The Avangard is launched atop an intercontinental ballistic missile, but unlike a regular missile warhead that follows a predictable path after separation it can make sharp maneuvers in the atmosphere en route to target, making it much harder to intercept.
Defense Minister Sergei Shoigu informed Putin that the first missile unit equipped with the Avangard hypersonic glide vehicle entered combat duty.
“I congratulate you on this landmark event for the military and the entire nation,” Shoigu said later during a conference call with top military leaders.
The Strategic Missile Forces chief, Gen. Sergei Karakayev, said during the call that the Avangard was put on duty with a unit in the Orenburg region in the southern Ural Mountains.
Putin unveiled the Avangard among other prospective weapons systems in his state-of-the-nation address in March 2018, noting that its ability to make sharp maneuvers on its way to a target will render missile defense useless.
“It heads to target like a meteorite, like a fireball,” he said at the time.
The Russian leader noted that Avangard is designed using new composite materials to withstand temperatures of up to 2,000 Celsius resulting from a flight through the atmosphere at hypersonic speeds.
The military said the Avangard is capable of flying 27 times faster than the speed of sound. It carries a nuclear weapon of up to 2 megatons.
Putin has said Russia had to develop the Avangard and other prospective weapons systems because of U.S. efforts to develop a missile defense system that he claimed could erode Russia’s nuclear deterrent. Moscow has scoffed at US claims that its missile shield isn’t intended to counter Russia’s massive missile arsenals.
Earlier this week, Putin emphasized that Russia is the only country armed with hypersonic weapons. He noted that for the first time Russia is leading the world in developing an entire new class of weapons, unlike in the past when it was catching up with the US.
In December 2018, the Avangard was launched from the Dombarovskiy missile base in the southern Urals and successfully hit a practice target on the Kura shooting range on Kamchatka, 6,000 kilometers (3,700 miles) away.
Russian media reports indicated that the Avangard will first be mounted on Soviet-built RS-18B intercontinental ballistic missiles, code-named SS-19 by NATO. It is expected to be fitted to the prospective Sarmat heavy intercontinental ballistic missile after it becomes operational.
The Defense Ministry said last month it demonstrated the Avangard to a team of US inspectors as part of transparency measures under the New Start nuclear arms treaty with the U.S.
The Russian military previously had commissioned another hypersonic weapon of a smaller range.
The Kinzhal (Dagger), which is carried by MiG-31 fighter jets, entered service with the Russian air force last year. Putin has said the missile flies 10 times faster than the speed of sound, has a range of more than 2,000 kilometers (1,250 miles) and can carry a nuclear or a conventional warhead. The military said it is capable of hitting both land targets and navy ships.
China has tested its own hypersonic glide vehicle, believed to be capable of traveling at least five times the speed of sound. It displayed the weapon called Dong Feng 17, or DF-17, at a military parade marking the 70th anniversary of the founding of the Chinese state.
US officials have talked about putting a layer of sensors in space to more quickly detect enemy missiles, particularly the hypersonic weapons. The administration also plans to study the idea of basing interceptors in space, so the US can strike incoming enemy missiles during the first minutes of flight when the booster engines are still burning.
The Pentagon also has been working on the development of hypersonic weapons in recent years, and Defense Secretary Mark Esper said in August that he believes “it’s probably a matter of a couple of years” before the US has one. He has called it a priority as the military works to develop new long-range fire capabilities.
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Saturday, December 28, 2019

Space - Astronomers find exoplanets with the density of cotton candy

Astronomers find exoplanets with the density of cotton candy







An artist's depiction of the Kepler 51 star system. NASA/ESA/STScI

Astronomers have discovered a number of “super-puff” exoplanets in the Kepler 51 star system that are as dense as cotton candy.
Utilizing data from the Hubble Space Telescope, researchers found fewer than 15 of the planets that are almost as big as Jupiter but have extremely low density, at less than 100 times the gas giant’s mass or less than 0.1 grams per cubic centimeter of volume.
“They’re very bizarre,” said the study’s lead author, Jessica Libby-Roberts, in a statement.
“This is an extreme example of what’s so cool about exoplanets in general,” said Zachory Berta-Thompson, one of the study’s co-authors, said. “They give us an opportunity to study worlds that are very different than ours, but they also place the planets in our own solar system into a larger context.”
The three “super-puff” exoplanets in the Kepler 51 system were “straight-up contrary to what we teach in undergraduate classrooms,” Berta-Thompson added.
The Kepler 51 system is approximately 2,400 light-years from Earth and is approximately 500 million years old. A light-year, which measures distance in space, equals 6 trillion miles.
Kepler 51’s three planets compared to the size of planets from our solar system. NASA/ESA/STScI
Using the Hubble, the researchers also attempted to look at the planets’ atmospheres, but ran into issues, as the atmospheres were opaque, rather than transparent.
“It definitely sent us scrambling to come up with what could be going on here,” Libby-Roberts continued. “We expected to find water, but we couldn’t observe the signatures of any molecule.”
Libby-Roberts and the other researchers theorized that the exoplanets are likely mostly comprised of hydrogen and helium, using computer simulations. It’s also probable that it is covered by a “thick haze made up of methane,” which makes them reminiscent of Saturn’s moon, Titan.
“If you hit methane with ultraviolet light, it will form a haze,” Libby-Roberts said. “It’s Titan in a nutshell.” In June, NASA unveiled a mission that will explore Titan, which could potentially host extraterrestrial life.
The researchers also discovered that the exoplanets are losing gas rapidly, with the innermost of the three exoplanets putting an estimated “tens of billions of tons of material into space every second.” Should that trend continue, these planets could shrink considerably over the next billion years and might wind up looking similar to “mini-Neptune” exoplanets.
“People have been really struggling to find out why this system looks so different than every other system,” Libby-Roberts said. “We’re trying to show that, actually, it does look like some of these other systems.”
“A good bit of their weirdness is coming from the fact that we’re seeing them at a time in their development where we’ve rarely gotten the chance to observe planets,” Berta-Thompson concurred.
The research, which is set to be published in The Astronomical Journal, can be read here.
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Earth Science - Geologists discover iron ‘snow’ falling in Earth’s core

Geologists discover iron ‘snow’ falling in Earth’s core



Earth’s core, iStockphoto

The Earth’s inner core is hot and pressurized, so the idea that it could contain snow seems far-fetched.
But that’s what a team of scientists has discovered.
In this case, however, the snow is composed of tiny particles of iron, far heavier than snow falling on the planet’s surface, that are dropping from the molten core and piling on top of the inner core.
“The Earth’s metallic core works like a magma chamber that we know better of in the crust,” Jung-Fu Lin, a professor in the Jackson School of Geosciences at the University of Texas at Austin and a co-author of the study, said in a statement.
“It’s sort of a bizarre thing to think about,” geochemist Nick Dygert explained. “You have crystals within the outer core snowing down onto the inner core over a distance of several hundred kilometers.”
A figure illustrating how iron “snow” falls from the outer core and piles on the inner core.UT Austin/Jackson School of Geosciences


The research paper compares the snowing of iron particles with a different process that takes place inside magma chambers near the planet’s surface and involves minerals crystallizing out of the melt and coming together. In magma chambers, the compaction of the minerals creates what the researchers call “cumulate rock.” In the Earth’s core, the compaction of the iron helps the inner core grow and the outer core shrink.
The findings could help geologists better understand how planets like ours form.
“Relating the model predictions to the anomalous observations allows us to draw inferences about the possible compositions of the liquid core and maybe connect this information to the conditions that prevailed at the time the planet was formed,” he said. “The starting condition is an important factor in Earth becoming the planet we know.”
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It’s Official: Trump’s Space Force is Now the Sixth Military Branch of the United States

TYLER DURDEN, DEC 23, 2019


With President Trump’s signing of the National Defense Authorization Act on Friday, he created the newest and sixth branch of the military — the first since the last branch, the US Air Force, was formally established in 1947.

Gen. John Raymond, the commander of US Space Command and Air Force Space Command said of the historic birth of the new Space Force now in effect: “The law states that Air Force Space Command will be re-designated the United States Space Force, that will happen immediately,” he said at the Pentagon.
He indicated that 16,000 active duty airmen and civilians currently serving in the Air Force Space Command will be assigned to the just established Space Force. From there, it will begin to get slowly up and running as its own branch.

“There’s not a really good playbook on, how do you stand up a separate service?” Gen. Raymond pointed out. “We haven’t really done this since 1947.”

“It’s going to be really important that we get this right. A uniform, a patch, a song ― it gets to the culture of a service,” he said. Raymond has been tapped to head the Space Force until a chief of space operations is confirmed by the Senate.

Meanwhile the Air Force Times obtained some of the specifics going forward:

Without sharing details of the plan, a senior Air Force official said on background, because he was not authorized to speak on the record, there will be 30, 60 and 90-day benchmarks to meet. Where it took three years to stand up the Air Force, he said, the Space Force hopes to be off and running in 18 months or less. That includes, he added, sending a four-star officer to represent the service on the Joint Chiefs of Staff.

The new command’s social media and recruitment efforts were fast up and running:

United States Space Force
✔@SpaceForceDoD


Explore space careers and find your purpose.https://www.airforce.com/careers/browse-careers/space …


The White House is touting it as a history making win. “For the first time since President Harry Truman created the Air Force over 70 years ago — think of that — we will create a brand-new American military service. That’s such a momentous statement: 70 years ago, the Air Force,” President Trump said in his NDAA signing ceremony remarks on Friday.

“It’s a big moment. That’s a big moment, and we’re all here for it. Space. Going to be a lot of things happening in space,” Trump added.

“Because space is the world’s newest warfighting domain. Amid grave threats to our national security, American superiority in space is absolutely vital. And we’re leading, but we’re not leading by enough,” the president said.

“The Space Force will help us deter aggression and control the ultimate high ground,” Trump said.

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