//www.koonmotors.com/news/space_time/astronomy/ Astronomy news. New! Earth-like extrasolar planet found; double helix nebula; supermassive black holes, astronomy articles, astronomy pictures. Updated daily. en-us Thu, 14 Sep 2023 20:49:43 EDT Thu, 14 Sep 2023 20:49:43 EDT 60 //www.koonmotors.com/images/scidaily-logo-rss.png//www.koonmotors.com/news/space_time/astronomy/ For more science news, visit ScienceDaily. //www.koonmotors.com/releases/2023/09/230914175133.htm Herbig-Haro (HH) objects are luminous regions surrounding newborn stars, formed when stellar winds or jets of gas spewing from these newborn stars form shock waves colliding with nearby gas and dust at high speeds. This image of HH 211 from NASA's James Webb Space Telescope reveals an outflow from a Class 0 protostar, an infantile analog of our Sun when it was no more than a few tens of thousands of years old and with a mass only 8% of the present-day Sun (it will eventually grow into a star like the Sun). Thu, 14 Sep 2023 17:51:33 EDT //www.koonmotors.com/releases/2023/09/230914175133.htm //www.koonmotors.com/releases/2023/09/230913122704.htm One of the most interesting and important questions in cosmology is, 'How much matter exists in the universe?' An international team has now succeeded in measuring the total amount of matter for the second time. The team determined that matter makes up 31% of the total amount of matter and energy in the universe, with the remainder consisting of dark energy. Wed, 13 Sep 2023 12:27:04 EDT //www.koonmotors.com/releases/2023/09/230913122704.htm //www.koonmotors.com/releases/2023/09/230913003300.htm These new detections suggest polar ring galaxies might be more common than previously believed. Wed, 13 Sep 2023 00:33:00 EDT //www.koonmotors.com/releases/2023/09/230913003300.htm //www.koonmotors.com/releases/2023/09/230912110158.htm At the center of every galaxy is a supermassive black hole. Beyond a certain size, these become active, emitting huge amounts of radiation, and are then called quasars. It is thought these are activated by the presence of massive dark matter halos (DMH) surrounding the galaxy, directing matter towards the center, feeding the black hole. A team has now surveyed hundreds of ancient quasars and found this behavior is very consistent throughout history. This is surprising, as many large-scale processes show variation throughout the life of the universe, so the mechanism of quasar activation could have implications for the evolution of the entire universe. Tue, 12 Sep 2023 11:01:58 EDT //www.koonmotors.com/releases/2023/09/230912110158.htm //www.koonmotors.com/releases/2023/09/230911141121.htm As the universe evolves, scientists expect large cosmic structures to grow at a certain rate: dense regions such as galaxy clusters would grow denser, while the void of space would grow emptier. Mon, 11 Sep 2023 14:11:21 EDT //www.koonmotors.com/releases/2023/09/230911141121.htm //www.koonmotors.com/releases/2023/09/230911141059.htm A new investigation with NASA's James Webb Space Telescope into K2-18 b, an exoplanet 8.6 times as massive as Earth, has revealed the presence of carbon-bearing molecules including methane and carbon dioxide. Webb's discovery adds to recent studies suggesting that K2-18 b could be a Hycean exoplanet, one which has the potential to possess a hydrogen-rich atmosphere and a water ocean-covered surface. 星期一,2023年9月11日14:10:59美国东部时间 //www.koonmotors.com/releases/2023/09/230911141059.htm //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 //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 //www.koonmotors.com/releases/2023/09/230907105909.htm New research has revealed the distribution of dark matter in never before seen detail, down to a scale of 30,000 light-years. The observed distribution fluctuations provide better constraints on the nature of dark matter. Thu, 07 Sep 2023 10:59:09 EDT //www.koonmotors.com/releases/2023/09/230907105909.htm //www.koonmotors.com/releases/2023/09/230906112346.htm Astronomers have detected the magnetic field of a galaxy so far away that its light has taken more than 11 billion years to reach us: we see it as it was when the Universe was just 2.5 billion years old. The result provides astronomers with vital clues about how the magnetic fields of galaxies like our own Milky Way came to be. Wed, 06 Sep 2023 11:23:46 EDT //www.koonmotors.com/releases/2023/09/230906112346.htm //www.koonmotors.com/releases/2023/09/230901143615.htm The planet HAT-P-32b is losing so much of its atmospheric helium that the trailing gas tails are among the largest structures yet known any planet outside our solar system. Three-dimensional (3D) simulations helped model the flow of the planet's atmosphere. The scientists hope to widen their planet-observing net and survey 20 additional star systems to find more planets losing their atmosphere and learn about their evolution. Fri, 01 Sep 2023 14:36:15 EDT //www.koonmotors.com/releases/2023/09/230901143615.htm //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 //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 //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 //www.koonmotors.com/releases/2023/08/230831121659.htm While astrophysicists previously believed that only supernovae could generate long gamma-ray bursts (GRBs), a 2021 observation uncovered evidence that compact-object mergers also can generate the phenomenon. Now, a new simulation confirms and explains this finding. If the accretion disk around the black hole is massive, it launches a jet that lasts several seconds, matching the description of a long GRB from a merger. Thu, 31 Aug 2023 12:16:59 EDT //www.koonmotors.com/releases/2023/08/230831121659.htm //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 //www.koonmotors.com/releases/2023/08/230829160720.htm Astronomers have uncovered a link between Neptune's shifting cloud abundance and the 11-year solar cycle, in which the waxing and waning of the Sun's entangled magnetic fields drives solar activity. Tue, 29 Aug 2023 16:07:20 EDT //www.koonmotors.com/releases/2023/08/230829160720.htm //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 //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 //www.koonmotors.com/releases/2023/08/230811172145.htm Megastorms regularly appear on Saturn, marring the 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 //www.koonmotors.com/releases/2023/08/230810180120.htm 2023年8月12日,美国航空航天局的STEREO-A飞船pass between the Sun and Earth, marking the first Earth flyby of the nearly 17-year-old mission. The visit home brings a special chance for the spacecraft to collaborate with NASA missions near Earth and reveal new insights into our closest star. Thu, 10 Aug 2023 18:01:20 EDT //www.koonmotors.com/releases/2023/08/230810180120.htm //www.koonmotors.com/releases/2023/08/230809130728.htm NASA's James Webb Space Telescope has followed up on observations by the Hubble Space Telescope of the farthest star ever detected in the very distant universe, within the first billion years after the big bang. Webb's NIRCam (Near-Infrared Camera) instrument reveals the star to be a massive B-type star more than twice as hot as our Sun, and about a million times more luminous. Wed, 09 Aug 2023 13:07:28 EDT //www.koonmotors.com/releases/2023/08/230809130728.htm //www.koonmotors.com/releases/2023/08/230803213824.htm New research details the discovery of the highest-energy light ever observed from the sun. The international team behind the discovery also found that this type of light, known as gamma rays, is surprisingly bright. That is, there's more of it than scientists had previously anticipated. Thu, 03 Aug 2023 21:38:24 EDT //www.koonmotors.com/releases/2023/08/230803213824.htm //www.koonmotors.com/releases/2023/08/230803213810.htm An international team of scientists have discovered an unusual Jupiter-sized planet orbiting a low-mass star called TOI-4860, located in the Corvus constellation. Thu, 03 Aug 2023 21:38:10 EDT //www.koonmotors.com/releases/2023/08/230803213810.htm //www.koonmotors.com/releases/2023/08/230803141714.htm NASA's James Webb Space Telescope has recorded breath-taking new images of the iconic Ring Nebula, also known as Messier 57. Thu, 03 Aug 2023 14:17:14 EDT //www.koonmotors.com/releases/2023/08/230803141714.htm //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 //www.koonmotors.com/releases/2023/07/230731122305.htm Researchers offer insight into the source of cosmic magnetic fields. The research team used models to show that magnetic fields may spontaneously arise in turbulent plasma. Their simulations showed that, in addition to generating new magnetic fields, the turbulence of those plasmas can also amplify magnetic fields once they've been generated, which helps explain how magnetic fields that originate on small scales can sometimes eventually reach to stretch across vast distances. Mon, 31 Jul 2023 12:23:05 EDT //www.koonmotors.com/releases/2023/07/230731122305.htm //www.koonmotors.com/releases/2023/07/230731122259.htm ——旨在unc小行星发现算法over near-Earth asteroids for the Vera C. Rubin Observatory's upcoming 10-year survey of the night sky -- has identified its first 'potentially hazardous' asteroid, a term for space rocks in Earth's vicinity that scientists like to keep an eye on. The roughly 600-foot-long asteroid, designated 2022 SF289, was discovered during a test drive of the algorithm with the ATLAS survey in Hawaii. Finding 2022 SF289, which poses no risk to Earth for the foreseeable future, confirms that the next-generation algorithm, known as HelioLinc3D, can identify near-Earth asteroids with fewer and more dispersed observations than required by today's methods. Mon, 31 Jul 2023 12:22:59 EDT //www.koonmotors.com/releases/2023/07/230731122259.htm //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 //www.koonmotors.com/releases/2023/07/230727144159.htm Last year, JWST made spectral observations of Ganymede and infrared observations of Io. Absorption lines of hydrogen peroxide at Ganymede's poles indicate radiolysis of water ice by charged particles funneled by the moon's magnetic field. Io had two major eruptions, one associated with a forbidden emission line of sulfur monoxide. The latter supports a theory that SO is produced at volcanic vents in a thin atmosphere that allows forbidden emission before collisions destroy the excited state. Thu, 27 Jul 2023 14:41:59 EDT //www.koonmotors.com/releases/2023/07/230727144159.htm //www.koonmotors.com/releases/2023/07/230727144140.htm A young planet whirling around a petulant red dwarf star is changing in unpredictable ways orbit-by-orbit. It is so close to its parent star that it experiences a consistent, torrential blast of energy, which evaporates its hydrogen atmosphere -- causing it to puff off the planet. Thu, 27 Jul 2023 14:41:40 EDT //www.koonmotors.com/releases/2023/07/230727144140.htm //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 //www.koonmotors.com/releases/2023/07/230726171252.htm Astronomers have discovered new evidence of how planets as massive as Jupiter can form. Wed, 26 Jul 2023 17:12:52 EDT //www.koonmotors.com/releases/2023/07/230726171252.htm //www.koonmotors.com/releases/2023/07/230726171243.htm An international team of scientists, including astrophysicists, report on a dedicated observational campaign on the Galactic microquasar dubbed GRS 1915+105. The team revealed features of a microquasar system that have never before been seen. Using the massive Five-hundred-meter Aperture Spherical radio Telescope (FAST) in China, astronomers discovered a quasi-periodic oscillation (QPO) signal in the radio band for the first time from any microquasar systems. Wed, 26 Jul 2023 17:12:43 EDT //www.koonmotors.com/releases/2023/07/230726171243.htm //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 //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 //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. 星期一,2023年7月24日12:27:54 EDT //www.koonmotors.com/releases/2023/07/230724122754.htm //www.koonmotors.com/releases/2023/07/230721113214.htm The material record that currently exists on the moon is rapidly becoming at risk of being destroyed if proper attention isn't paid during the new space era, scientists say. They propose a new scientific subfield: planetary geoarchaeology, the study of how cultural and natural processes on Earth's moon, on Mars and across the solar system may be altering, preserving or destroying the material record of space exploration. Fri, 21 Jul 2023 11:32:14 EDT //www.koonmotors.com/releases/2023/07/230721113214.htm //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 //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 //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 //www.koonmotors.com/releases/2023/07/230718225649.htm Astronomers used the state-of-the-art capability of VERA, a Japanese network of radio telescopes, to uncover valuable clues about how rapidly growing 'young' supermassive black holes form, grow, and possibly evolve into more powerful quasars. Tue, 18 Jul 2023 22:56:49 EDT //www.koonmotors.com/releases/2023/07/230718225649.htm //www.koonmotors.com/releases/2023/07/230717180004.htm Astronomers have found evidence that some stars boast unexpectedly strong surface magnetic fields, a discovery that challenges current models of how they evolve. Mon, 17 Jul 2023 18:00:04 EDT //www.koonmotors.com/releases/2023/07/230717180004.htm //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 //www.koonmotors.com/releases/2023/07/230717115851.htm In the search for extraterrestrial intelligence, alien radio signals would be swamped by interference from radio sources on Earth. To confirm, researchers point away from the source and then back. If it's still there, it may be interesting. Researchers have come up with a new method that looks for evidence the signal has passed through the interstellar medium. The technique will boost confidence in any candidate signal discovered in the future. Mon, 17 Jul 2023 11:58:51 EDT //www.koonmotors.com/releases/2023/07/230717115851.htm //www.koonmotors.com/releases/2023/07/230714114758.htm The NASA/ESA Hubble Space Telescope has captured a monster in the making in this observation of the exceptional galaxy cluster eMACS J1353.7+4329, which lies about eight billion light-years from Earth in the constellation Canes Venatici. This collection of at least two galaxy clusters is in the process of merging together to create a cosmic monster, a single gargantuan cluster acting as a gravitational lens. Fri, 14 Jul 2023 11:47:58 EDT //www.koonmotors.com/releases/2023/07/230714114758.htm //www.koonmotors.com/releases/2023/07/230714114749.htm New observations have distinguished the sites of star formation and a possible site of star death from the surrounding nebula in a galaxy 13.2 billion light-years away. This is the farthest that such structures have been observed. Fri, 14 Jul 2023 11:47:49 EDT //www.koonmotors.com/releases/2023/07/230714114749.htm //www.koonmotors.com/releases/2023/07/230713192849.htm Brown dwarf stars rarely emit radio waves. Here scientists have found the coldest star yet emitting at these long wave lengths. Understanding the science of 'ultracool brown dwarfs' will help deepen our knowledge of how stars evolve. Thu, 13 Jul 2023 19:28:49 EDT //www.koonmotors.com/releases/2023/07/230713192849.htm //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. 星期四,2023年7月13日19:28:47美国东部时间 //www.koonmotors.com/releases/2023/07/230713192847.htm //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 //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 //www.koonmotors.com/releases/2023/07/230712124750.htm From our cosmic backyard in the solar system to distant galaxies near the dawn of time, NASA's James Webb Space Telescope has delivered on its promise of revealing the universe like never before in its first year of science operations. To celebrate the completion of a successful first year, NASA has released Webb's image of a small star-forming region in the Rho Ophiuchi cloud complex. Wed, 12 Jul 2023 12:47:50 EDT //www.koonmotors.com/releases/2023/07/230712124750.htm //www.koonmotors.com/releases/2023/07/230712124607.htm A new radar technique developed by a graduate student allows imaging of the upper few feet of ice sheets on Earth and icy worlds. The technique uses instruments on airplanes or satellites to survey large regions quickly. The upper few feet of ice sheets are important for measuring melt on Earth or looking for habitable environments on icy worlds. Previous airborne or satellite techniques could not image this narrow region in detail. Wed, 12 Jul 2023 12:46:07 EDT //www.koonmotors.com/releases/2023/07/230712124607.htm //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 //www.koonmotors.com/releases/2023/07/230711133116.htm Citizen scientists have set a new record for the SETI Institute and Unistellar, comprising the highest number of observers providing data on a single event. Amateur astronomers conducted a groundbreaking observation of supernova (SN) 2023ixf. The observations, which began just one hour after the supernova's first known appearance, have generated the longest continuous light curve of this supernova gathered by citizen scientists. Tue, 11 Jul 2023 13:31:16 EDT //www.koonmotors.com/releases/2023/07/230711133116.htm //www.koonmotors.com/releases/2023/07/230710180457.htm A new technique allows scientists to see how intensely rivers used to flow on Mars, and how they currently flow on Titan. The method uses satellite observations to estimate the rate at which rivers move fluid and sediment downstream. Mon, 10 Jul 2023 18:04:57 EDT //www.koonmotors.com/releases/2023/07/230710180457.htm //www.koonmotors.com/releases/2023/07/230706124536.htm Researchers have discovered the most distant active supermassive black hole to date with the James Webb Space Telescope (JWST). The galaxy, CEERS 1019, existed about 570 million years after the big bang, and its black hole is less massive than any other yet identified in the early universe. Thu, 06 Jul 2023 12:45:36 EDT //www.koonmotors.com/releases/2023/07/230706124536.htm //www.koonmotors.com/releases/2023/07/230705143017.htm 天体物理学家揭示了缓慢而steady lengthening of Earth's day caused by the tidal pull of the moon was halted for over a billion years. They show that from approximately two billion years ago until 600 million years ago, an atmospheric tide driven by the sun countered the effect of the moon, keeping Earth's rotational rate steady and the length of day at a constant 19.5 hours. Without this billion-year pause in the slowing of our planet's rotation, our current 24-hour day would stretch to over 60 hours. The paper offers a new perspective on how global warming will affect the length of our day and validates global circulation models as a climate modelling tool. Wed, 05 Jul 2023 14:30:17 EDT //www.koonmotors.com/releases/2023/07/230705143017.htm //www.koonmotors.com/releases/2023/07/230705143005.htm Researchers have made major strides in confirming the source of dust in early galaxies. Observations of two Type II supernovae, Supernova 2004et (SN 2004et) and Supernova 2017eaw (SN 2017eaw), have revealed large amounts of dust within the ejecta of each of these objects. The mass found by researchers supports the theory that supernovae played a key role in supplying dust to the early universe. Wed, 05 Jul 2023 14:30:05 EDT //www.koonmotors.com/releases/2023/07/230705143005.htm //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