Strange & Offbeat: Space & Time News -- ScienceDaily //www.koonmotors.com/news/strange_offbeat/space_time/ Quirky stories from ScienceDaily's Space & Time section. en-us Sun, 10 Sep 2023 22:55:49 EDT Sun, 10 Sep 2023 22:55:49 EDT 60 Strange & Offbeat: Space & Time News -- ScienceDaily //www.koonmotors.com/images/scidaily-logo-rss.png//www.koonmotors.com/news/strange_offbeat/space_time/ For more science news, visit ScienceDaily. Study hints at the existence of the closest black holes to Earth in the Hyades star cluster //www.koonmotors.com/releases/2023/09/230908130001.htm A new article hints at the existence of several black holes in the Hyades cluster -- the closest open cluster to our solar system -- which would make them the closest black holes to Earth ever detected. Fri, 08 Sep 2023 13:00:01 EDT //www.koonmotors.com/releases/2023/09/230908130001.htm Ravenous black hole consumes three Earths'-worth of star every time it passes //www.koonmotors.com/releases/2023/09/230907130334.htm Massive burst of X-rays detected by astronomers indicates material three times the mass of Earth burning up in a black hole. They observed a star like our own Sun being eaten away every time it orbits close. First time a Sun-like star being repeatedly disrupted by a low mass black hole has been seen, opening the possibility of a range of star and black hole combinations to be discovered. Thu, 07 Sep 2023 13:03:34 EDT //www.koonmotors.com/releases/2023/09/230907130334.htm Vast bubble of galaxies discovered, given Hawaiian name //www.koonmotors.com/releases/2023/09/230905202510.htm The immense bubble is 820 million light years from Earth and believed to be a fossil-like remnant of the birth of the universe. Tue, 05 Sep 2023 20:25:10 EDT //www.koonmotors.com/releases/2023/09/230905202510.htm Webb reveals new structures within iconic supernova //www.koonmotors.com/releases/2023/08/230831142845.htm NASA's James Webb Space Telescope has begun the study of one of the most renowned supernovae, SN 1987A (Supernova 1987A). Located 168,000 light-years away in the Large Magellanic Cloud, SN 1987A has been a target of intense observations at wavelengths ranging from gamma rays to radio for nearly 40 years, since its discovery in February of 1987. New observations by Webb's NIRCam (Near-Infrared Camera) provide a crucial clue to our understanding of how a supernova develops over time to shape its remnant. Thu, 31 Aug 2023 14:28:45 EDT //www.koonmotors.com/releases/2023/08/230831142845.htm Scientists detect and validate the longest-period exoplanet found with TESS //www.koonmotors.com/releases/2023/08/230831121751.htm Scientists have detected and validated two of the longest-period exoplanets found by TESS to date. These long period large exoplanets orbit a K dwarf star and belong to a class of planets known as warm Jupiters, which have orbital periods of 10-200 days and are at least six times Earth's radius. This recent discovery offers exciting research opportunities for the future of finding long-period planets that resemble those in our own solar system. Thu, 31 Aug 2023 12:17:51 EDT //www.koonmotors.com/releases/2023/08/230831121751.htm New giant planet evidence of possible planetary collisions //www.koonmotors.com/releases/2023/08/230831121723.htm A Neptune-sized planet denser than steel has been discovered by an international team of astronomers, who believe its composition could be the result of a giant planetary clash. Thu, 31 Aug 2023 12:17:23 EDT //www.koonmotors.com/releases/2023/08/230831121723.htm Telescopes help unravel pulsar puzzle //www.koonmotors.com/releases/2023/08/230830131732.htm With a remarkable observational campaign that involved 12 telescopes both on the ground and in space, including three European Southern Observatory (ESO) facilities, astronomers have uncovered the strange behavior of a pulsar, a super-fast-spinning dead star. This mysterious object is known to switch between two brightness modes almost constantly, something that until now has been an enigma. But astronomers have now found that sudden ejections of matter from the pulsar over very short periods are responsible for the peculiar switches. Wed, 30 Aug 2023 13:17:32 EDT //www.koonmotors.com/releases/2023/08/230830131732.htm Quantum discovery offers glimpse into other-worldly realm //www.koonmotors.com/releases/2023/08/230829125922.htm Experiments promote a curious flipside of decaying monopoles: A reality where particle physics is quite literally turned on its head Tue, 29 Aug 2023 12:59:22 EDT //www.koonmotors.com/releases/2023/08/230829125922.htm Mysterious Neptune dark spot detected from Earth for the first time //www.koonmotors.com/releases/2023/08/230824111928.htm Using ESO's Very Large Telescope (VLT), astronomers have observed a large dark spot in Neptune's atmosphere, with an unexpected smaller bright spot adjacent to it. This is the first time a dark spot on the planet has ever been observed with a telescope on Earth. These occasional features in the blue background of Neptune's atmosphere are a mystery to astronomers, and the new results provide further clues as to their nature and origin. Thu, 24 Aug 2023 11:19:28 EDT //www.koonmotors.com/releases/2023/08/230824111928.htm How a cup of water can unlock the secrets of our Universe //www.koonmotors.com/releases/2023/08/230823165413.htm A researcher made a discovery that could change our understanding of the universe. He reveals that there is a range in which fundamental constants can vary, allowing for the viscosity needed for life processes to occur within and between living cells. This is an important piece of the puzzle in determining where these constants come from and how they impact life as we know it. Wed, 23 Aug 2023 16:54:13 EDT //www.koonmotors.com/releases/2023/08/230823165413.htm New type of star gives clues to mysterious origin of magnetars //www.koonmotors.com/releases/2023/08/230817163841.htm Magnetars are the strongest magnets in the Universe. These super-dense dead stars with ultra-strong magnetic fields can be found all over our galaxy but astronomers don't know exactly how they form. Now, using multiple telescopes around the world, researchers have uncovered a living star that is likely to become a magnetar. This finding marks the discovery of a new type of astronomical object -- massive magnetic helium stars -- and sheds light on the origin of magnetars. Thu, 17 Aug 2023 16:38:41 EDT //www.koonmotors.com/releases/2023/08/230817163841.htm Using supernovae to study neutrinos' strange properties //www.koonmotors.com/releases/2023/08/230815151134.htm In a new study, researchers have taken an important step toward understanding how exploding stars can help reveal how neutrinos, mysterious subatomic particles, secretly interact with themselves. Tue, 15 Aug 2023 15:11:34 EDT //www.koonmotors.com/releases/2023/08/230815151134.htm Hundred-year storms? That's how long they last on Saturn //www.koonmotors.com/releases/2023/08/230811172145.htm 超级风暴经常出现在土星、破坏relatively bland surface before disappearing. But radio observations show that the storms have long-lasting effects deeper in the atmosphere, in particular in the distribution of ammonia. Using NRAO's Very Large Array, astronomers see such impacts from storms that happened hundreds of years ago. The findings will help explain the differences between storms on the gas giants Saturn and Jupiter. Fri, 11 Aug 2023 17:21:45 EDT //www.koonmotors.com/releases/2023/08/230811172145.htm Possible seasonal climate patterns on early Mars //www.koonmotors.com/releases/2023/08/230809164721.htm New observations of mud cracks made by the Curiosity Rover show that high-frequency, wet-dry cycling occurred in early Martian surface environments, indicating that the red planet may have once seen seasonal weather patterns or even flash floods. Wed, 09 Aug 2023 16:47:21 EDT //www.koonmotors.com/releases/2023/08/230809164721.htm Physicists demonstrate how sound can be transmitted through vacuum //www.koonmotors.com/releases/2023/08/230809130709.htm A classic movie was once promoted with the punchline: 'In space, no one can hear you scream'. Physicists have now demonstrated, to the contrary, that in certain situations sound can be transmitted strongly across a vacuum region! Wed, 09 Aug 2023 13:07:09 EDT //www.koonmotors.com/releases/2023/08/230809130709.htm Chemical contamination on International Space Station is out of this world //www.koonmotors.com/releases/2023/08/230808202017.htm Concentrations of potentially harmful chemical compounds in dust collected from air filtration systems on the International Space Station (ISS) exceed those found in floor dust from many American homes, a new study reveals. Tue, 08 Aug 2023 20:20:17 EDT //www.koonmotors.com/releases/2023/08/230808202017.htm Gravitational arcs in 'El Gordo' galaxy cluster //www.koonmotors.com/releases/2023/08/230802132033.htm A new image of the galaxy cluster known as 'El Gordo' is revealing distant and dusty objects never seen before, and providing a bounty of fresh science. The infrared image displays a variety of unusual, distorted background galaxies that were only hinted at in previous Hubble Space Telescope images. Wed, 02 Aug 2023 13:20:33 EDT //www.koonmotors.com/releases/2023/08/230802132033.htm Sun 'umbrella' tethered to asteroid might help mitigate climate change //www.koonmotors.com/releases/2023/07/230731151552.htm Earth is rapidly warming and scientists are developing a variety of approaches to reduce the effects of climate change. An astronomer has proposed a novel approach -- a solar shield to reduce the amount of sunlight hitting Earth, combined with a tethered, captured asteroid as a counterweight. Engineering studies using this approach could start now to create a workable design that could mitigate climate change within decades. Mon, 31 Jul 2023 15:15:52 EDT //www.koonmotors.com/releases/2023/07/230731151552.htm 研究人员成功地训练机器学习model in outer space for the first time //www.koonmotors.com/releases/2023/07/230728170641.htm Scientists have trained a machine learning model in outer space, on board a satellite. This achievement could revolutionize the capabilities of remote-sensing satellites by enabling real-time monitoring and decision making for a range of applications. Fri, 28 Jul 2023 17:06:41 EDT //www.koonmotors.com/releases/2023/07/230728170641.htm Astronomers shed new light on formation of mysterious fast radio bursts //www.koonmotors.com/releases/2023/07/230728170617.htm International team reports on a radio pulsar phase of a Galactic magnetar that emitted a fast radio burst in 2020; observations suggest unique origins for 'bursts' and 'pulses,' which adds to FRB formation theory. Fri, 28 Jul 2023 17:06:17 EDT //www.koonmotors.com/releases/2023/07/230728170617.htm Listen to a star 'twinkle' //www.koonmotors.com/releases/2023/07/230727144014.htm Many people know that stars appear to twinkle because our atmosphere bends starlight as it travels to Earth. But stars also have an innate 'twinkle' -- caused by rippling waves of gas on their surfaces -- that is imperceptible to current Earth-bound telescopes. In a new study, researchers developed the first 3D simulations of energy rippling from a massive star's core to its outer surface. Using these new models, the researchers determined, for the first time, how much stars should innately twinkle. Thu, 27 Jul 2023 14:40:14 EDT //www.koonmotors.com/releases/2023/07/230727144014.htm Using cosmic weather to study which worlds could support life //www.koonmotors.com/releases/2023/07/230727143148.htm As the next generation of giant, high-powered observatories begin to come online, a new study suggests that their instruments may offer scientists an unparalleled opportunity to discern what weather may be like on far-away exoplanets. Thu, 27 Jul 2023 14:31:48 EDT //www.koonmotors.com/releases/2023/07/230727143148.htm Webb snaps highly detailed infrared image of actively forming stars //www.koonmotors.com/releases/2023/07/230726171337.htm Young stars are rambunctious! NASA's James Webb Space Telescope has captured the 'antics' of a pair of actively forming young stars, known as Herbig-Haro 46/47, in high-resolution near-infrared light. To find them, trace the bright pink and red diffraction spikes until you hit the center: The stars are within the orange-white splotch. They are buried deeply in a disk of gas and dust that feeds their growth as they continue to gain mass. The disk is not visible, but its shadow can be seen in the two dark, conical regions surrounding the central stars. Wed, 26 Jul 2023 17:13:37 EDT //www.koonmotors.com/releases/2023/07/230726171337.htm Dark energy camera captures galaxies in lopsided tug of war, a prelude to merger //www.koonmotors.com/releases/2023/07/230726113043.htm The spiral galaxy NGC 1532, also known as Haley's Coronet, is caught in a lopsided tug of war with its smaller neighbor, the dwarf galaxy NGC 1531. Wed, 26 Jul 2023 11:30:43 EDT //www.koonmotors.com/releases/2023/07/230726113043.htm New image reveals secrets of planet birth //www.koonmotors.com/releases/2023/07/230725123025.htm Astronomers have gained new clues about how planets as massive as Jupiter could form. Researchers have detected large dusty clumps, close to a young star, that could collapse to create giant planets. Tue, 25 Jul 2023 12:30:25 EDT //www.koonmotors.com/releases/2023/07/230725123025.htm Webb detects water vapor in rocky planet-forming zone //www.koonmotors.com/releases/2023/07/230724122754.htm Water is essential for life as we know it. However, scientists debate how it reached the Earth and whether the same processes could seed rocky exoplanets orbiting distant stars. New insights may come from the planetary system PDS 70, located 370 light-years away. The star hosts both an inner disk and outer disk of gas and dust, separated by a 5 billion-mile-wide (8 billion kilometer) gap, and within that gap are two known gas-giant planets. Mon, 24 Jul 2023 12:27:54 EDT //www.koonmotors.com/releases/2023/07/230724122754.htm Ancient, high-energy impacts could have fueled Venus volcanism //www.koonmotors.com/releases/2023/07/230720124844.htm A team has modeled the early impact history of Venus to explain how Earth's sister planet has maintained a youthful surface despite lacking plate tectonics. The team compared the early collision histories of the two bodies and determined that Venus likely experienced higher-speed, higher-energy impacts creating a super-heated core that promoted extended volcanism and resurfaced the planet. Thu, 20 Jul 2023 12:48:44 EDT //www.koonmotors.com/releases/2023/07/230720124844.htm Galaxy J1135 reveals its water map //www.koonmotors.com/releases/2023/07/230720124717.htm Researchers look at water in galaxies, its distribution and in particular its changes of state from ice to vapor, as important markers indicating areas of increased energy, in which black holes and stars are formed. A new study has now revealed the distribution of water within the J1135 galaxy, which is 12 billion light years away and formed when the Universe was a 'teenager', 1.8 billion years after the Big Bang . This water map, with unprecedented resolution, is the first ever to be obtained for such a remote galaxy. The map can help scientists to understand the physical processes taking place within J1135 and shed light on the dynamics, still partially unclear, surrounding the formation of stars, black holes and galaxies themselves. Thu, 20 Jul 2023 12:47:17 EDT //www.koonmotors.com/releases/2023/07/230720124717.htm Does this exoplanet have a sibling sharing the same orbit? //www.koonmotors.com/releases/2023/07/230719112636.htm Astronomers have found the possible 'sibling' of a planet orbiting a distant star. The team has detected a cloud of debris that might be sharing this planet's orbit and which, they believe, could be the building blocks of a new planet or the remnants of one already formed. If confirmed, this discovery would be the strongest evidence yet that two exoplanets can share one orbit. Wed, 19 Jul 2023 11:26:36 EDT //www.koonmotors.com/releases/2023/07/230719112636.htm The puzzle of the galaxy with no dark matter //www.koonmotors.com/releases/2023/07/230719112630.htm New research has found the first evidence of a massive galaxy with no dark matter. The result is a challenge to the current standard model of cosmology. Wed, 19 Jul 2023 11:26:30 EDT //www.koonmotors.com/releases/2023/07/230719112630.htm Unusual white dwarf star is made of hydrogen on one side and helium on the other //www.koonmotors.com/releases/2023/07/230719112553.htm In a first for white dwarfs, the burnt-out cores of dead stars, astronomers have discovered that at least one member of this cosmic family is two faced. One side of the white dwarf is composed of hydrogen, while the other is made up of helium. Wed, 19 Jul 2023 11:25:53 EDT //www.koonmotors.com/releases/2023/07/230719112553.htm Giant swirling waves at edge of Jupiter's magnetosphere //www.koonmotors.com/releases/2023/07/230717143208.htm A team has found that NASA's Juno spacecraft orbiting Jupiter frequently encounters giant swirling waves at the boundary between the solar wind and Jupiter's magnetosphere. The waves are an important process for transferring energy and mass from the solar wind, a stream of charged particles emitted by the Sun, to planetary space environments. Mon, 17 Jul 2023 14:32:08 EDT //www.koonmotors.com/releases/2023/07/230717143208.htm James Webb Telescope catches glimpse of possible first-ever 'dark stars' //www.koonmotors.com/releases/2023/07/230713192847.htm Three bright objects initially identified as galaxies in observations from the James Webb Space Telescope might actually represent an exotic new form of star. If confirmed, the discovery would also shed light on the nature of dark matter. Thu, 13 Jul 2023 19:28:47 EDT //www.koonmotors.com/releases/2023/07/230713192847.htm Rare, double-lobe nebula resembles overflowing cosmic 'jug' //www.koonmotors.com/releases/2023/07/230713142116.htm A billowing pair of nearly symmetrical loops of dust and gas mark the death throes of an ancient red-giant star. The resulting structure, said to resemble an old style of English jug, is a rarely seen bipolar reflection nebula. Evidence suggests that this object formed by the interactions between the dying red giant and a now-shredded companion star. Thu, 13 Jul 2023 14:21:16 EDT //www.koonmotors.com/releases/2023/07/230713142116.htm When the stars align: Astronomers find answers to mysterious action of ghost stars in our Galaxy //www.koonmotors.com/releases/2023/07/230713142104.htm Scientists have found a source for the mysterious alignment of stars near the Galactic Center. Thu, 13 Jul 2023 14:21:04 EDT //www.koonmotors.com/releases/2023/07/230713142104.htm Search for dark matter //www.koonmotors.com/releases/2023/07/230713142034.htm Scientists have applied a promising new method to search for dark matter particles in a particle accelerator. The method is based on the observation of the spin polarization of a particle beam in a storage ring COSY. Thu, 13 Jul 2023 14:20:34 EDT //www.koonmotors.com/releases/2023/07/230713142034.htm New study reveals evidence of diverse organic material on Mars //www.koonmotors.com/releases/2023/07/230712124609.htm Scientists gain vital insights into Mars' history and potential for supporting life. Wed, 12 Jul 2023 12:46:09 EDT //www.koonmotors.com/releases/2023/07/230712124609.htm Training robots how to learn, make decisions on the fly //www.koonmotors.com/releases/2023/07/230711194434.htm Mars rovers have teams of human experts on Earth telling them what to do. But robots on lander missions to moons orbiting Saturn or Jupiter are too far away to receive timely commands from Earth. Researchers developed a novel learning-based method so robots on extraterrestrial bodies can make decisions on their own about where and how to scoop up terrain samples. Tue, 11 Jul 2023 19:44:34 EDT //www.koonmotors.com/releases/2023/07/230711194434.htm Reinventing cosmology: New research puts age of universe at 26.7 -- not 13.7 -- billion years //www.koonmotors.com/releases/2023/07/230711133118.htm Our universe could be twice as old as current estimates, according to a new study that challenges the dominant cosmological model and sheds new light on the so-called 'impossible early galaxy problem.' Tue, 11 Jul 2023 13:31:18 EDT //www.koonmotors.com/releases/2023/07/230711133118.htm Quasar 'clocks' show Universe was five times slower soon after the Big Bang //www.koonmotors.com/releases/2023/07/230703133103.htm Quasars are the supermassive black holes at the centres of early galaxies. Scientists have unlocked their secrets to use them as 'clocks' to measure time near the beginning of the universe. Mon, 03 Jul 2023 13:31:03 EDT //www.koonmotors.com/releases/2023/07/230703133103.htm First 'ghost particle' image of Milky Way //www.koonmotors.com/releases/2023/06/230629193240.htm Scientists have revealed a uniquely different image of our galaxy by determining the galactic origin of thousands of neutrinos -- invisible 'ghost particles' which exist in great quantities but normally pass straight through Earth undetected. The neutrino-based image of the Milky Way is the first of its kind: a galactic portrait made with particles of matter rather than electromagnetic energy. Thu, 29 Jun 2023 19:32:40 EDT //www.koonmotors.com/releases/2023/06/230629193240.htm Gullies on Mars could have been formed by recent periods of liquid meltwater, study suggests //www.koonmotors.com/releases/2023/06/230629193235.htm A study offers new insights into how water from melting ice could have played a recent role in the formation of ravine-like channels that cut down the sides of impact craters on Mars. Thu, 29 Jun 2023 19:32:35 EDT //www.koonmotors.com/releases/2023/06/230629193235.htm Earliest strands of the cosmic web //www.koonmotors.com/releases/2023/06/230629173611.htm Galaxies are not scattered randomly across the universe. They gather together not only into clusters, but into vast interconnected filamentary structures with gigantic barren voids in between. This 'cosmic web' started out tenuous and became more distinct over time as gravity drew matter together. Thu, 29 Jun 2023 17:36:11 EDT //www.koonmotors.com/releases/2023/06/230629173611.htm Unveiling the origins of merging black holes in galaxies like our own //www.koonmotors.com/releases/2023/06/230629125715.htm Black holes, some of the most captivating entities in the cosmos, possess an immense gravitational pull so strong that not even light can escape. The groundbreaking detection of gravitational waves in 2015, caused by the coalescence of two black holes, opened a new window into the universe. Since then, dozens of such observations have sparked the quest among astrophysicists to understand their astrophysical origins. Thanks to the POSYDON code's recent major advancements in simulating binary-star populations, a team of scientists predicted the existence of merging massive, 30 solar mass black hole binaries in Milky Way-like galaxies, challenging previous theories. Thu, 29 Jun 2023 12:57:15 EDT //www.koonmotors.com/releases/2023/06/230629125715.htm Gravitational waves from colossal black holes found using 'cosmic clocks' //www.koonmotors.com/releases/2023/06/230629125650.htm You can't see or feel it, but everything around you -- including your own body -- is slowly shrinking and expanding. It's the weird, spacetime-warping effect of gravitational waves passing through our galaxy. New results are the first evidence of the gravitational wave background -- a sort of soup of spacetime distortions pervading the entire universe and long predicted to exist by scientists. Thu, 29 Jun 2023 12:56:50 EDT //www.koonmotors.com/releases/2023/06/230629125650.htm Life after death: Astronomers find a planet that shouldn't exist //www.koonmotors.com/releases/2023/06/230628130343.htm The star would have inflated up to 1.5 times the planet's orbital distance -- engulfing the planet in the process -- before shrinking to its current size at only one-tenth of that distance. Wed, 28 Jun 2023 13:03:43 EDT //www.koonmotors.com/releases/2023/06/230628130343.htm Starlight and the first black holes: researchers detect the host galaxies of quasars in the early universe //www.koonmotors.com/releases/2023/06/230628125125.htm For the first time, the James Webb Space Telescope has revealed starlight from two massive galaxies hosting actively growing black holes -- quasars -- seen less than a billion years after the Big Bang. Wed, 28 Jun 2023 12:51:25 EDT //www.koonmotors.com/releases/2023/06/230628125125.htm Magnetic bacteria point the way //www.koonmotors.com/releases/2023/06/230627225215.htm 趋磁细菌,可结合Earth's magnetic field, have been discovered in a new location. Previously observed on land and in shallow water, analysis of a hydrothermal vent has proven that they can also survive deep under the ocean. The bacteria were able to exist in an environment that was not ideal for their typical needs. Magnetotactic bacteria are of interest not only for the role they play in Earth's ecosystem, but also in the search for extraterrestrial life. Evidence of their existence can remain in rocks for billions of years. Their magnetic inclinations can also provide a record of how magnetic poles have shifted over time. This new discovery brings hope to researchers that the magnetic bacteria might be found in yet more unexpected locations, on Earth and perhaps even on Mars or beyond. Tue, 27 Jun 2023 22:52:15 EDT //www.koonmotors.com/releases/2023/06/230627225215.htm Einstein and Euler put to the test at the edge of the Universe //www.koonmotors.com/releases/2023/06/230622120924.htm The cosmos is a unique laboratory for testing the laws of physics, in particular those of Euler and Einstein. Euler described the movements of celestial objects, while Einstein described the way in which celestial objects distort the Universe. Since the discovery of dark matter and the acceleration of the Universe's expansion, the validity of their equations has been put to the test: are they capable of explaining these mysterious phenomena? A team has developed the first method to find out. It considers a never-before-used measure: time distortion. Thu, 22 Jun 2023 12:09:24 EDT //www.koonmotors.com/releases/2023/06/230622120924.htm Molecular filament shielded young solar system from supernova //www.koonmotors.com/releases/2023/06/230622120910.htm 同位素比值在陨石上发现表明supernova exploded nearby while the Sun and Solar System were still forming. But the blast wave from a supernova that close could have potentially destroyed the nascent Solar System. New calculations shows that a filament of molecular gas, which is the birth cocoon of the Solar System, aided the capture of the isotopes found in the meteorites, while acting as a buffer protecting the young Solar System from the nearby supernova blast. Thu, 22 Jun 2023 12:09:10 EDT //www.koonmotors.com/releases/2023/06/230622120910.htm Never-before-seen way to annihilate a star //www.koonmotors.com/releases/2023/06/230622120817.htm Astronomers studying a powerful gamma-ray burst, may have detected a never-before-seen way to destroy a star. Unlike most GRBs, which are caused by exploding massive stars or the chance mergers of neutron stars, astronomers have concluded that this GRB came instead from the collision of stars or stellar remnants in the jam-packed environment surrounding a supermassive black hole at the core of an ancient galaxy. 星期四,2023年6月22日12:08:17美国东部时间 //www.koonmotors.com/releases/2023/06/230622120817.htm Detection of an echo emitted by our Galaxy's black hole 200 years ago //www.koonmotors.com/releases/2023/06/230621121018.htm An international team of scientists has discovered that Sagittarius A* (Sgr A*), the supermassive black hole at the centre of the Milky Way, emerged from a long period of dormancy some 200 years ago. The team, led by Frédéric Marin, a CNRS researcher at the Astronomical Strasbourg Observatory (CNRS/University of Strasbourg), has revealed the past awakening of this gigantic object, which is four million times more massive than the Sun. Their work is published in Nature on 21 June. Wed, 21 Jun 2023 12:10:18 EDT //www.koonmotors.com/releases/2023/06/230621121018.htm Exoplanet may reveal secrets about the edge of habitability //www.koonmotors.com/releases/2023/06/230621105434.htm How close can a rocky planet be to a star, and still sustain water and life? A recently discovered exoplanet may be key to solving that mystery. Wed, 21 Jun 2023 10:54:34 EDT //www.koonmotors.com/releases/2023/06/230621105434.htm Navigating underground with cosmic-ray muons //www.koonmotors.com/releases/2023/06/230615183226.htm Superfast, subatomic-sized particles called muons have been used to wirelessly navigate underground in a reportedly world first. By using muon-detecting ground stations synchronized with an underground muon-detecting receiver, researchers were able to calculate the receiver's position in the basement of a six-story building. As GPS cannot penetrate rock or water, this new technology could be used in future search and rescue efforts, to monitor undersea volcanoes, and guide autonomous vehicles underground and underwater. Thu, 15 Jun 2023 18:32:26 EDT //www.koonmotors.com/releases/2023/06/230615183226.htm Researchers demystify the unusual origin of the Geminids meteor shower //www.koonmotors.com/releases/2023/06/230615183212.htm 普林斯顿大学的研究人员使用观察从美国宇航局的s Parker Solar Probe mission to deduce that it was likely a violent, catastrophic event -- such as a high-speed collision with another body or a gaseous explosion -- that created the Geminids meteoroid stream. Mysteries surrounding the origin of the Geminids have long fascinated scientists because, while most meteor showers are created when a comet emits a tail of ice and dust, the Geminids stem from an asteroid -- a chunk of rock that normally does not produce a tail. Until now, this unusual meteoroid stream had only been studied from Earth. Thu, 15 Jun 2023 18:32:12 EDT //www.koonmotors.com/releases/2023/06/230615183212.htm Discovery of white dwarf pulsar sheds light on star evolution //www.koonmotors.com/releases/2023/06/230615183207.htm The discovery of a rare type of white dwarf star system provides new understanding into stellar evolution. Thu, 15 Jun 2023 18:32:07 EDT //www.koonmotors.com/releases/2023/06/230615183207.htm Scientists report 'benchmarks' for extreme space weather //www.koonmotors.com/releases/2023/06/230615105314.htm Extreme space weather threatens vital satellites orbiting the Earth, including the Global Navigation Satellite Systems (GNSS) which pass through the heart of the outer radiation belt. New research has now determined a series of benchmarks for the likely severity of extreme space weather events in GPS orbit. Thu, 15 Jun 2023 10:53:14 EDT //www.koonmotors.com/releases/2023/06/230615105314.htm Astronomers discover new link between dark matter and clumpiness of the universe //www.koonmotors.com/releases/2023/06/230614220651.htm 研究人员揭示了theoretical breakthrough that may explain both the nature of invisible dark matter and the large-scale structure of the universe known as the cosmic web. The result establishes a new link between these two longstanding problems in astronomy, opening new possibilities for understanding the cosmos. The research suggests that the 'clumpiness problem,' which centres on the unexpectedly even distribution of matter on large scales throughout the cosmos, may be a sign that dark matter is composed of hypothetical, ultra-light particles called axions. The implications of proving the existence of hard-to-detect axions extend beyond understanding dark matter and could address fundamental questions about the nature of the universe itself. Wed, 14 Jun 2023 22:06:51 EDT //www.koonmotors.com/releases/2023/06/230614220651.htm Earth was created much faster than we thought: This makes the chance of finding other habitable planets in the Universe more likely //www.koonmotors.com/releases/2023/06/230614220621.htm Over the past decades, researchers thought Earth was created over a period of more than 100 million years. However, a new study from suggests that the creation of Earth was much more rapid, and that water and other essential ingredients for life were delivered to Earth very early on. Wed, 14 Jun 2023 22:06:21 EDT //www.koonmotors.com/releases/2023/06/230614220621.htm A scorching-hot exoplanet scrutinized by astronomers //www.koonmotors.com/releases/2023/06/230614220619.htm Through the Gemini-North Telescope in Hawai'i, the chemical composition of WASP-76 b is revealed in unprecedented detail, giving new insights also into the composition of giant planets. Wed, 14 Jun 2023 22:06:19 EDT //www.koonmotors.com/releases/2023/06/230614220619.htm