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trickle-down is the solution (to the planetary core formation problem)




scientists have long pondered how rocky bodies in the solar system—including our own earth—got their metal cores. according to research conducted by the university of texas at austin, evidence points to the downwards percolation of molten metal toward the center of the planet through tiny channe...



trickle-down is the solution (to the planetary core formation problem)




image: new research from the university of texas at austin adds evidence to a theory that claims the metallic cores of rocky planets like earth were formed when molten metal trapped... view more credit: ut austinscientists have long pondered how rocky bodies in the solar system--including our own ...



scientists investigate debris disk in a nearby planetary system




alma band 7 (0.86 mm) continuum image of 61 vir with natural weights and corrected by the primary beam response (fwhm∼ 1700). credit: marino et al., 2017.(phys.org)—astronomers have recently presented new results of observations of a nearby planetary system known as 61 virginis (or 61 vir for sh...



experiments cast doubt on how the earth was formed




new geochemical research indicates that existing theories of the formation of the earth may be mistaken. the results of experiments to show how zinc (zn) relates to sulphur (s) under the conditions present at the time of the formation of the earth more than 4 billion years ago, indicate that there i...



astronomers discover a missing link in planet formation




an image of a protoplanetary disk, made using results from the new model, after the formation of a spontaneous dust trap, visible as a bright dust ring. gas is depicted in blue and dust in red. credit: jean-francois gonzalezplanets are thought to form in the disks of dust and gas found around young ...



unseen 'planetary mass object' signalled by warped kuiper belt




a yet to be discovered, unseen "planetary mass object" makes its existence known by ruffling the orbital plane of distant kuiper belt objects, according to research by kat volk and renu malhotra of the ua's lunar and planetary laboratory. the object is pictured on a wide orbit far beyond pluto in th...



far-infrared instrument to map star formation in the universe




questions about how and when stars are formed continue to tug at human curiosity. star formation is governed by gravity and heat. gravity causes molecular clouds to collapse and eventually form stars and planetary systems, but to complete the process, heat needs to be continuously removed from the c...



nasa wants a 'planetary protection officer' to protect earth from microbes




nasa is seeking a new ‘planetary protection officer,’ according to a recent job listing, and whomever gets the position will be tasked with protecting our planet from alien life (though likely not in the way you’re thinking). the position was recently listed on the usa jobs government website,...



astronomers explain the formation of seven exoplanets around trappist-1




astronomers from the university of amsterdam have offered an explanation for the formation of the trappist-1 planetary system. the system has seven planets as big as the earth that orbit close to their star. the crux, according to the researchers from the netherlands, is the line where ice changes i...



a geochemist from msu has assessed the oxidative environment inside asteroids




image: this is a schematic of the oxygen concentration emf cell. view more credit: valentin osadchiia postgraduate of the faculty of geology at moscow state university working as a part of an international team has assessed the oxidative environment and its changes inside asteroids from the core t...



spontaneous 'dust traps': astronomers discover a missing link in planet formatio




planets are thought to form in the disks of dust and gas found around young stars. but astronomers have struggled to assemble a complete theory of their origin that explains how the initial dust develops into planetary systems. a french-uk-australian team now think they have the answer, with their s...



the big problem of global food production has a very tiny solution




the answer to the growing, worldwide food production problem may have a tiny solution—nanoparticles, which are being explored as both fertilizers and fungicides for crops.



researchers propose new type of planetary object




scientists suggest in a new study the existence of a planetary object called a "synestia," a huge, spinning, donut-shaped mass of hot, vaporized rock, formed as planet-sized objects smash into each other.



controlling ice formation




(phys.org)—researchers have demonstrated that ice crystals will grow along straight lines in a controlled way on microgrooved surfaces. compared to the random formation of ice crystals on smooth surfaces, the ice on the microgrooved surfaces forms more slowly and melts more quickly, which could le...



surface book con performance base in arrivo in europa dal 20 aprile 2017 | prezz




aggiornamento 30/3ecco una panoramica dei prezzi nei nuovi mercati, con tanto di link all'acquisto sul microsoft store. notate che questi sono prezzi di listino.austria (link), francia (link), germania (link), paesi bassi (link): 256 gb / intel core i7 - 8 gb / dgpu - € 2,599512 gb / intel core i7...



everything you need to know about arm’s dynamiq




arm unveiled the nature of its new dynamiq technology back in march, but with the announcement of the company’s new cortex-a75 and a55 cpu cores, we now have a much clearer picture about the capabilities offered by arm’s next-gen multi-core soc solution.starting at the basics, dynamiq is a new t...



planetary waves, first found on earth, are discovered on sun




x-rays stream off the sun in this image showing observations from by nasa's nuclear spectroscopic telescope array, or nustar, overlaid on a picture taken by nasa's solar dynamics observatory (sdo). credit: nasathe same kind of large-scale planetary waves that meander through the atmosphere high abo...



soon all android users will be able to see the latest emoji, sort of




now, there are plenty of differences between various android versions. you might think that the most important ones are the core features or the number of security fixes, but you would be wrong. obviously, the most notable difference between android versions is the emoji catalog.see also:why we love...



surprise! when a brown dwarf is actually a planetary mass object




washington, dc-- sometimes a brown dwarf is actually a planet--or planet-like anyway. a team led by carnegie's jonathan gagné, and including researchers from the institute for research on exoplanets (irex) at université de montréal, the american museum of natural history, and university of califo...



looking under the hood of a spy "implant"




this story had me at “espionage implant” and “trickle down espionage” via cory at boing boing comes this fascinating tech teardown of an s8 data line locator, a gsm-based listening device hidden inside of a standard usb cable. a while back joe fitz tweeted about the s8 data line locator. he ...



evidence discovered for two distinct giant planet populations




artistic impression that shows the formation of a gas giant planet in the ring of dust around a young star. credit: eso/l. caláadain a paper published in astronomy & astrophysics, a team of researchers from the instituto de astrofísica e ciências do espaço (ia3) discovered observational evidence...



nasa needs a planetary protection officer. here's why




the invasion is nigh! you knew it would happen eventually — that the roswell aliens would not only turn out to be real, but that they'd one day return to finish their job of earthly conquest. now, nasa, which was surely part of the conspiracy of silence for the last sixty years, has come clean, an...



accretion theory suggests gas giants might start out as steamy worlds




schematic diagram showing several evolutionary stages of a protoplanet accreting ice-rich pebbles. (1) planet without an atmosphere. (2) planet with an atmosphere and a solid ice/rock surface. the outer atmosphere is radiative. the inner atmosphere is convective with ice grains precipitating towards...



scientists propose synestia, a new type of planetary object




image: rocky planets are thought to form from giant impacts between planet-size bodies. impacts with high energy and high angular momentum could form a synestia, a rotating mass of vaporized rock,... view more credit: simon lock, harvard universitythere's something new to look for in the heavens, ...



bursting the bubble: solution to the kirchhoff-plateau problem




image: (from left): dr. giulio giusteri and prof. eliot fried from oist's mathematical soft matter unit and dr. luca lussardi from the department of mathematics and physics at the università cattolica... view more credit: oistoften used for children's enjoyment and artistic performances, soap bubb...