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Keyword: science

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  • Hubble telescope captures the best photo yet of the interstellar comet Borisov [tr]

    10/17/2019 6:47:34 AM PDT · by C19fan · 17 replies
    UK Daily Mail ^ | October 17, 2019 | Ian Randall
    An Astronomer has released our best and sharpest look to date at Comet Borisov, the second ever-known interstellar object to visit our solar system, using NASA's Hubble Space Telescope to capture the new image. The comet was travelling at around 110,000 miles per hour when University of California Los Angeles astronomer David Jewitt studied it on October 12, 2019, when it was 260 million miles away. The comet — which is named after the Crimean astronomer who discovered it — will pass within around 177,000 miles (285,000 kilometres) of the Earth in early December this year. It is trailing behind...
  • Earthquake struck on unusual section of San Andreas fault known for ‘creeping’

    10/16/2019 11:44:55 AM PDT · by BenLurkin · 8 replies
    Ohama.com ^ | Oct 16, 2019 | Rong-Gong Lin
    Tuesday’s quake occurred along a section that is notable for not having had dramatically large earthquakes in the modern historical record. Keith Knudsen, USGS geologist and deputy director of the agency’s Earthquake Science Center, called Tuesday’s quake “a garden variety San Andreas event” in this section. “This is the 10th earthquake larger than magnitude 4 in the last 20 years in this area” within a radius of about six miles from Tuesday’s epicenter, Knudsen said. The stretches of San Andreas north and south of the creeping section have acted very differently in the modern historical period, rupturing in the state’s...
  • Space shock as 'unidentified object' feeding mysterious black hole leaves experts baffled

    10/16/2019 10:46:11 AM PDT · by Innovative · 37 replies
    UK Express ^ | Oct. 16, 2019 | Brian McGleenon
    A MYSTERIOUS supermassive black hole in a distant galaxy is spitting high energy particles after being fed by an object that has never been seen before. The baffling phenomenon has put existing theoretical models on their head, and astrophysicists are puzzled as to what is creating such a regular excretion of material from within the bowels of this supermassive black hole. According to the paper titled, 'Nine-hour X-ray quasi-periodic eruptions from a low-mass black hole galactic nucleus', the energy erupts from the black hole every nine hours and last for one hour and it's that precision which has baffled scientists.
  • Liquifying a rocky exoplanet

    10/15/2019 4:32:05 PM PDT · by SunkenCiv · 3 replies
    Science Daily ^ | October 9, 2019 | University of Bern
    A hot, molten Earth would be around 5% larger than its solid counterpart. The difference between molten and solid rocky planets is important for the search of Earth-like worlds beyond our Solar System and the understanding of Earth itself. Rocky exoplanets that are around Earth-size are comparatively small, which makes them incredibly difficult to detect and characterise using telescopes. What are the optimal conditions to find such small planets that linger in the darkness? ... In the characterization of exoplanets outside our solar system and the search for potentially habitable worlds, researchers at the University of Bern are among the...
  • 35 ‘Astronomy Photographer Of The Year 2019’ Finalists

    09/19/2019 4:58:06 PM PDT · by Openurmind · 12 replies
    Boredpanda ^ | Sep 18 2019 | Li Nefas and James Caunt
    Astrophotography is probably one of the most difficult and specialized types of photography to try your hand at, but if you manage to get it right the rewards are some of the most astonishingly breathtaking images you are ever likely to see. The Royal Observatory Greenwich has just revealed the winners of its annual Astronomy Photographer of the Year competition, and the quality of the entrants was nothing short of spectacular. This year the competition attracted 4,602 entries from 90 different countries across the world, all presenting the universe in a new light and vying for the coveted prize of...
  • Why NASA's Annoyed About Elon Musk's Giant Rocket [not]

    10/15/2019 12:46:03 PM PDT · by SunkenCiv · 12 replies
    Space dot dumb, er, com ^ | Monday, October 7, 2019 | Rafi Letzter
    The Starship MK1 assembled at SpaceX's build and launch facility in Texas. On Sept. 30, Elon Musk, CEO of SpaceX, told CNN that the Crew Dragon would be ready to carry astronauts into space in three to four months. But NASA Administrator Jim Bridenstine told CNN he wasn't convinced, and due to delays from SpaceX and Boeing (which is at work on a similarly delayed, competitor capsule called Starliner), he anticipated NASA buying more seats aboard Russian capsules... "I am looking forward to the SpaceX announcement. In the meantime, Commercial Crew is years behind schedule. NASA expects to see...
  • Former NASA scientist says they found life on Mars in the 1970s

    10/15/2019 6:30:55 AM PDT · by Red Badger · 44 replies
    CNN ^ | Updated 0809 GMT (1609 HKT) October 15, 2019 | By Jessie Yeung
    We may have already discovered the essence of life on Mars 40 years ago, according to a former NASA scientist. Gilbert V. Levin, who was principal investigator on a NASA experiment that sent Viking landers to Mars in 1976, published an article in the ScientificAmerican journal last Thursday, arguing the experiment's positive results were proof of life on the red planet. The experiment, called Labeled Release, was designed to test Martian soil for organic matter. "It seemed we had answered that ultimate question," Levin wrote in the article. In the experiment, the Viking probes placed nutrients in Mars soil samples...
  • NASA Gets a Rare Look at a Rocky Exoplanet's Surface [LHS 3844b]

    10/14/2019 8:02:31 PM PDT · by SunkenCiv · 24 replies
    Jet Propulsion Laboratory Spitzer Telescope site ^ | August 19, 2019 | Calla Cofield
    A new study using data from NASA's Spitzer Space Telescope provides a rare glimpse of conditions on the surface of a rocky planet orbiting a star beyond the Sun... the planet's surface may resemble those of Earth's Moon or Mercury: The planet likely has little to no atmosphere and could be covered in the same cooled volcanic material found in the dark areas of the Moon's surface, called mare. Discovered in 2018 by NASA's Transiting Exoplanet Satellite Survey (TESS) mission, planet LHS 3844b is located 48.6 light-years from Earth and has a radius 1.3 times that of Earth. It orbits...
  • Model offers explanation for universe's most powerful magnets [magnetars]

    10/10/2019 9:31:09 AM PDT · by Red Badger · 22 replies
    UPI ^ | Oct. 10, 2019 / 8:54 AM | By Brooks Hays
    New research suggests magnetars are produced by the deaths of massive stars that were formed by stellar mergers. Photo ESO/L. Calçada Oct. 10 (UPI) -- With the help of computer simulations, scientists have come up with an explanation for the formation of the strongest magnets in the universe, magnetars. Models suggest stellar mergers can produce strong magnetic fields. When the magnetic star produced by a merger dies, a magnetar can form. Magnetars are neutron stars -- collapsed stellar cores -- with extremely powerful magnetic fields. The sun features an outer layer of convective activity that produces strong magnetic fields, but...
  • What If Planet Nine Is a Bowling-Ball-Sized Black Hole?

    10/01/2019 6:44:19 AM PDT · by 2ndDivisionVet · 29 replies
    Gizmodo ^ | September 28, 2019 | Ryan F. Mandelbaum
    Some of the most distant rocks in our solar system act in a way that suggests there’s some massive object out there we haven’t been able to see. A planet? Maybe. But why not a small black hole? That’s a scenario a pair of scientists describe in a new paper. Of course, they recognise that a planet is more likely than an ancient black hole unlike any we’ve directly observed. But they simply want astronomers to think creatively while hunting for whatever this hypothetical object, often called Planet Nine, might be. “By simply focussing on the concept of a planet,...
  • Researchers rediscover fast-acting German insecticide lost in the aftermath of WWII

    10/11/2019 3:24:15 PM PDT · by BenLurkin · 47 replies
    phys.org ^ | 10/11/2019
    In continuing to explore the crystal structure of insecticides, the research team began studying fluorinated forms of DDT, swapping out chlorine atoms for fluorine. They prepared two solid forms of the compound—a monofluoro and a difluoro analog—and tested them on fruit flies and mosquitoes, including mosquito species that carry malaria, yellow fever, Dengue, and Zika. The solid forms of fluorinated DDT killed insects more quickly than did DDT; the difluoro analog, known as DFDT, killed mosquitoes two to four times faster. The researchers also made a detailed analysis of the relative activities of the solid-state forms of fluorinated DDT, noting...
  • When Hospitals Refuse To Allow Time For Brain-Injured Patients To Heal

    10/11/2019 2:48:24 PM PDT · by Tolerance Sucks Rocks · 26 replies
    The Federalist ^ | October 11, 2019 | Bobby Schindler
    On May 31, 2002, 18-year-old Brenden Flynn was involved in an auto accident and suffered a traumatic brain injury. He was med-flighted to a hospital in Syracuse, New York. Shortly thereafter, he was transferred to Park Ridge Hospital near Rochester, where doctors notified his mother, MaryJo Flynn, that Brenden had a zero chance of recovery or having any meaningful “quality of life.” They suggested ending his life. If Brenden were to survive, his doctors said, he would be in a nursing home for the rest of his life. Brenden’s mother, not wanting to make the decision to end her son’s...
  • Navy Pilot Says ‘Dark Mass’ Made Torpedo Disappear

    10/08/2019 11:29:47 AM PDT · by C19fan · 28 replies
    Popular Mechanics ^ | October 8, 2019 | Andrew Daniels
    You might not know the name David Fravor, but you probably know what he saw … even if he’s still not sure what that was. Fravor is the retired U.S. Navy Commander who in 2017 told the New York Times that he spotted a Tic Tac-shaped UFO from the cockpit of his F/A-18F Super Hornet—“around 40 feet long and oval in shape”—100 miles off the coast of San Diego in 2004. There’s video, of course, of Fravor’s now-legendary encounter, originally released for public viewing by The New York Times and To The Stars Academy of Arts & Science, a UFO...
  • The Weird History of Unidentified Submerged Objects

    10/09/2019 4:52:26 PM PDT · by RoosterRedux · 31 replies
    PopularMechanics.com ^ | Kyle Mizokami
    This past weekend, former U.S. Navy Commander David Fravor was a guest on the Joe Rogan Experience podcast. Fravor, who was the subject of a New York Times article about his 2004 UFO sighting, discussed a spooky new sighting a fellow pilot revealed to him after they were both out of the Navy. According to Fravor, the eyewitness was a former pilot of the MH-53E Sea Dragon, the Navy version of the Marine Corps’ CH-53E Sea Stallion, based at Naval Station Roosevelt Roads, on the island of Puerto Rico. Twice while recovering spent practice munitions out of the water, the...
  • Any other fans out there of "Fabric of the Cosmos?"

    01/07/2012 4:45:46 AM PST · by PJ-Comix · 40 replies
    Self | January 6, 2012 | PJ-Comix
    Are there any other fans of FABRIC OF THE COSMOS out there? I found it to be perhaps the most fascinating science show ever produced. The information in the show is nothing less than stunning and definitely changed my view of the universe. Some of the information is so stunning that it is hard to comprehend. But guess what? Even physicists have a hard time getting their minds around it. And an oatmeal cookie to the first person who can post who the major backer of this series is.
  • Dismantling Space and Time [Review of book by Brian Greene]

    07/15/2004 7:52:36 AM PDT · by PatrickHenry · 135 replies · 1,755+ views
    Tech Central Station ^ | 09 March 2004 | Kenneth Silber
    Space and time are pervasive in our everyday experience, and yet it is hard to say exactly what they are. They resist definition in terms other than themselves. Moreover, they have various subtle and elusive properties, with which science continues to grapple. Relativity and quantum mechanics, the physics breakthroughs of the 20th century, revolutionized scientific thinking about these subjects. And this revolution has not played itself out, since cutting-edge physics today involves further radical rethinking of time and space. The Fabric of the Cosmos: Space, Time, and the Texture of Reality, by Brian Greene (Knopf, $28.95), is an excellent guide...
  • Is String Theory About to Unravel?

    12/22/2014 7:40:57 AM PST · by BenLurkin · 52 replies
    smithsonianmag.com ^ | Brian Greene
    The idea underlying string unification is as simple as it is seductive. Since the early 20th century, nature’s fundamental constituents have been modeled as indivisible particles—the most familiar being electrons, quarks and neutrinos—that can be pictured as infinitesimal dots devoid of internal machinery. String theory challenges this by proposing that at the heart of every particle is a tiny, vibrating string-like filament. And, according to the theory, the differences between one particle and another—their masses, electric charges and, more esoterically, their spin and nuclear properties—all arise from differences in how their internal strings vibrate. Much as the sonorous tones of...
  • String Theory 'blog

    08/18/2006 8:55:42 PM PDT · by SunkenCiv · 116 replies · 6,962+ views
    various ^ | before, during, and after 2006 | various
    String Theory site:freerepublic.com Google
  • String Theory Does Not Win a Nobel, and I Win a Bet

    10/09/2019 8:12:24 AM PDT · by C19fan · 19 replies
    Scientific America ^ | October 9, 2019 | John Horgan
    I just won a bet I made in 2002 with physicist Michio Kaku. I bet him $1,000 that “by 2020, no one will have won a Nobel Prize for work on superstring theory, membrane theory, or some other unified theory describing all the forces of nature.” This year’s Nobel Prize in Physics, which recognized solid work in cosmology (yay Jim Peebles!) and astronomy, was Kaku’s last chance to win before 2020. Kaku and I made the bet under the auspices of Long Bets, a “public arena for enjoyably competitive predictions, of interest to society, with philanthropic money at stake.” Long...
  • Astronomers find cyanide gas in interstellar object 2I/Borisov

    10/08/2019 8:22:09 AM PDT · by BenLurkin · 21 replies
    phys.org ^ | 10/07/2019 | Mat Williams
    C/2019 Q4 (Borisov) this summer provided renewed opportunities to study material left by outgassing. Using data gathered by the William Herschel Telescope (WHT), an international team of astronomers found that 2I/Borisov contains cyanide. Since comets and asteroids are essentially material left over from the formation of a planetary system, these studies will allow scientists to place constraints on the physical and chemical processes involved in the formation of extrasolar planets. Basically, it's like being able to study extrasolar planets without having to go there physically. Prof. Fitzsimmons told Universe Today, materials from other planetary systems, delivered to our doorstep—or at...