//www.koonmotors.com/news/space_time/nebulae/ Nebula News. Double helix nebula, cosmic spider, tarantula nebula and more. Fantastic images and full text science articles. Free. en-us Sun, 10 Sep 2023 22:49:50 EDT Sun, 10 Sep 2023 22:49:50 EDT 60 //www.koonmotors.com/images/scidaily-logo-rss.png//www.koonmotors.com/news/space_time/nebulae/ For more science news, visit ScienceDaily. //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/2023/08/230803141714.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/2023/07/230726171337.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 //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/2023/07/230713142116.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/2023/07/230705143005.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/2023/06/230626164214.htm Scientists detect a new carbon compound in space for the first time. Known as methyl cation (pronounced cat-eye-on) (CH3+), the molecule is important because it aids the formation of more complex carbon-based molecules. Methyl cation was detected in a young star system, with a protoplanetary disk, known as d203-506, which is located about 1,350 light-years away in the Orion Nebula. Mon, 26 Jun 2023 16:42:14 EDT //www.koonmotors.com/releases/2023/06/230626164214.htm //www.koonmotors.com/releases/2023/06/230622120910.htm Isotope ratios found in meteorites suggest that a 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 //www.koonmotors.com/releases/2023/06/230622120817.htm 天文学家研究强大的伽马射线,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. Thu, 22 Jun 2023 12:08:17 EDT //www.koonmotors.com/releases/2023/06/230622120817.htm //www.koonmotors.com/releases/2023/06/230613190805.htm The discovery of tiny salt grains in a sample from an asteroid provides strong evidence that liquid water may be more common in the solar system than previously thought. Tue, 13 Jun 2023 19:08:05 EDT //www.koonmotors.com/releases/2023/06/230613190805.htm //www.koonmotors.com/releases/2023/06/230605181210.htm A delicate tracery of dust and bright star clusters threads across this image from the James Webb Space Telescope. The bright tendrils of gas and stars belong to the barred spiral galaxy NGC 5068, whose bright central bar is visible in the upper left of this image -- a composite from two of Webb's instruments. Mon, 05 Jun 2023 18:12:10 EDT //www.koonmotors.com/releases/2023/06/230605181210.htm //www.koonmotors.com/releases/2023/04/230406113931.htm Of the many different kinds of stars, asymptotic giant branch (AGB) stars, usually slightly larger and older than our own sun, are known producers of interstellar dust. Dusty AGBs are particularly prominent producers of dust, and the light they shine happens to vary widely. For the first time, a long-period survey has found the variable intensity of dusty AGBs coincides with variations in the amount of dust these stars produce. As this dust can lead to the creation of planets, its study can shed light on our own origins. Thu, 06 Apr 2023 11:39:31 EDT //www.koonmotors.com/releases/2023/04/230406113931.htm //www.koonmotors.com/releases/2023/03/230314205347.htm The rare sight of a Wolf-Rayet star -- among the most luminous, most massive, and most briefly detectable stars known -- was one of the first observations made by NASA's James Webb Space Telescope in June 2022. Webb shows the star, WR 124, in unprecedented detail with its powerful infrared instruments. The star is 15,000 light-years away in the constellation Sagittarius. Tue, 14 Mar 2023 20:53:47 EDT //www.koonmotors.com/releases/2023/03/230314205347.htm //www.koonmotors.com/releases/2023/02/230228085111.htm Using data from the James Webb Space Telescope's first year of interstellar observation, an international team of researchers was able to serendipitously view an exploding supernova in a faraway spiral galaxy. Tue, 28 Feb 2023 08:51:11 EST //www.koonmotors.com/releases/2023/02/230228085111.htm //www.koonmotors.com/releases/2023/02/230216172158.htm If you want to build a habitable planet, ice is a key ingredient. The ice can be found in enormous clouds in the Universe and it is the main carrier of the necessary elements such as carbon, hydrogen, oxygen, nitrogen and sulphur. These elements are part of the atmosphere around planets and part of molecules like sugar, alcohols and simple amino acids as well. The new James Webb Space Telescope (JWST) has contributed to the discovery of different ices in a molecular cloud, 'Chameleon 1' -- one of the coldest and darkest regions to have ever been explored. Astronomers assume that these types of molecules were also present in the cold cloud of gas and dust forming our own solar system. Thu, 16 Feb 2023 17:21:58 EST //www.koonmotors.com/releases/2023/02/230216172158.htm //www.koonmotors.com/releases/2023/02/230216161926.htm Researchers have released their findings on polycyclic aromatic hydrocarbons in the interstellar medium of nearby galaxies. Thu, 16 Feb 2023 16:19:26 EST //www.koonmotors.com/releases/2023/02/230216161926.htm //www.koonmotors.com/releases/2023/02/230201134112.htm Astronomers using data from the SMARTS 1.5-meter Telescope at the Cerro Tololo Inter-American Observatory (CTIO), have made the first confirmed detection of a star system that will one day form a kilonova -- the ultra-powerful, gold-producing explosion created by merging neutron stars. These systems are so phenomenally rare that only about 10 such systems are thought to exist in the entire Milky Way. Wed, 01 Feb 2023 13:41:12 EST //www.koonmotors.com/releases/2023/02/230201134112.htm //www.koonmotors.com/releases/2023/01/230126161919.htm Earth's potassium arrived by meteoritic delivery service finds new research led by Earth and planetary scientists. Their work shows that some primitive meteorites contain a different mix of potassium isotopes than those found in other, more-chemically processed meteorites. These results can help elucidate the processes that shaped our Solar System and determined the composition of its planets. Thu, 26 Jan 2023 16:19:19 EST //www.koonmotors.com/releases/2023/01/230126161919.htm //www.koonmotors.com/releases/2023/01/230123123245.htm Astronomers used observations from the James Webb Space Telescope (JWST) to achieve the darkest ever view of a dense interstellar cloud. These observations have revealed the composition of a virtual treasure chest of ices from the early universe, providing new insights into the chemical processes of one of the coldest, darkest places in the universe as well as the origins of the molecules that make up planetary atmospheres. Mon, 23 Jan 2023 12:32:45 EST //www.koonmotors.com/releases/2023/01/230123123245.htm //www.koonmotors.com/releases/2023/01/230118195711.htm Astronomers have released a gargantuan survey of the galactic plane of the Milky Way. The new dataset contains a staggering 3.32 billion celestial objects -- arguably the largest such catalog so far. The data for this unprecedented survey were taken with the Dark Energy Camera. Wed, 18 Jan 2023 19:57:11 EST //www.koonmotors.com/releases/2023/01/230118195711.htm //www.koonmotors.com/releases/2023/01/230113145324.htm Understanding how dust grains form in interstellar gas could offer significant insights to astronomers and help materials scientists develop useful nanoparticles. Fri, 13 Jan 2023 14:53:24 EST //www.koonmotors.com/releases/2023/01/230113145324.htm //www.koonmotors.com/releases/2023/01/230112134740.htm Something is amiss in the Butterfly Nebula. When astronomers compared two exposures of this planetary nebula that had been taken by the Hubble Space Telescope in 2009 and 2020, they saw dramatic changes in the material within its 'wings.' Powerful winds are apparently driving complex alterations of material within the Butterfly Nebula, behavior not seen in planetary nebulae to date. The researchers want to understand how such activity is possible from what should be a 'sputtering, largely moribund star with no remaining fuel.' Thu, 12 Jan 2023 13:47:40 EST //www.koonmotors.com/releases/2023/01/230112134740.htm //www.koonmotors.com/releases/2022/11/221110143813.htm A supernova is a stellar explosion, which occurs when the lives of some really massive stars come to an end. In this violent epilogue, the star expels the material from its outer layers by means of a shock wave, allowing us to see the various elements it was composed of. Thu, 10 Nov 2022 14:38:13 EST //www.koonmotors.com/releases/2022/11/221110143813.htm //www.koonmotors.com/releases/2022/11/221103140752.htm The first observations of a mass-accreting black hole from the Imaging X-Ray Polarimetry Explorer (IXPE) mission reveal new details about the configuration of extremely hot matter in the region immediately surrounding it. Researchers are using measurements of the polarization of X-rays to test and refine models that describe how black holes swallow matter, becoming some of the most luminous sources of light -- including X-rays -- in the universe. Thu, 03 Nov 2022 14:07:52 EDT //www.koonmotors.com/releases/2022/11/221103140752.htm //www.koonmotors.com/releases/2022/10/221031091416.htm A beautiful tapestry of colors, showing the ghostly remains of a gigantic star, was captured in incredible detail with the VLT Survey Telescope, hosted at the European Southern Observatory's Paranal site in Chile. Mon, 31 Oct 2022 09:14:16 EDT //www.koonmotors.com/releases/2022/10/221031091416.htm //www.koonmotors.com/releases/2022/10/221019172249.htm NASA's James Webb Space Telescope has captured a lush, highly detailed landscape -- the iconic Pillars of Creation -- where new stars are forming within dense clouds of gas and dust. The three-dimensional pillars look like majestic rock formations, but are far more permeable. These columns are made up of cool interstellar gas and dust that appear -- at times -- semi-transparent in near-infrared light. Wed, 19 Oct 2022 17:22:49 EDT //www.koonmotors.com/releases/2022/10/221019172249.htm //www.koonmotors.com/releases/2022/09/220929133505.htm Astronomers may have discovered the ancient chemical remains of the first stars to light up the Universe. Using an innovative analysis of a distant quasar observed by the 8.1-meter Gemini North telescope on Hawai'i, the scientists found an unusual ratio of elements that, they argue, could only come from the debris produced by the all-consuming explosion of a 300-solar-mass first-generation star. Thu, 29 Sep 2022 13:35:05 EDT //www.koonmotors.com/releases/2022/09/220929133505.htm //www.koonmotors.com/releases/2022/09/220929132325.htm The first map of the 'galactic underworld' -- a chart of the corpses of once massive suns that have since collapsed into black holes and neutron stars -- has revealed a graveyard that stretches three times the height of the Milky Way, and that almost a third of the objects have been flung out from the galaxy altogether. Thu, 29 Sep 2022 13:23:25 EDT //www.koonmotors.com/releases/2022/09/220929132325.htm //www.koonmotors.com/releases/2022/08/220830093247.htm Researchers have observed 'baby stars' in the Small Magellanic Cloud, having an environment similar to the early universe. Toward one of the baby stars, they found molecular outflow, which has similar properties to those seen in the Milky Way galaxy, giving a new perspective on the birth of stars. Tue, 30 Aug 2022 09:32:47 EDT //www.koonmotors.com/releases/2022/08/220830093247.htm //www.koonmotors.com/releases/2022/08/220829112925.htm Astronomers have discovered a rare celestial jewel -- a so-called Planetary Nebula (PN) inside a 500 million-year-old Galactic Open Cluster (OC) called M37 (also known as NGC2099). This is a very rare finding of high astrophysical value. Mon, 29 Aug 2022 11:29:25 EDT //www.koonmotors.com/releases/2022/08/220829112925.htm //www.koonmotors.com/releases/2022/08/220811094920.htm NASA's Fermi Gamma-ray Space Telescope confirms one supernova remnant as a launch site for some of our galaxy's highest-energy protons. Thu, 11 Aug 2022 09:49:20 EDT //www.koonmotors.com/releases/2022/08/220811094920.htm //www.koonmotors.com/releases/2022/07/220718122232.htm A team of international experts, renowned for debunking several black hole discoveries, have found a stellar-mass black hole in the Large Magellanic Cloud, a neighbor galaxy to our own. The researchers found that the star that gave rise to the black hole vanished without any sign of a powerful explosion. Mon, 18 Jul 2022 12:22:32 EDT //www.koonmotors.com/releases/2022/07/220718122232.htm //www.koonmotors.com/releases/2022/07/220712114835.htm NASA has revealed groundbreaking new views of the cosmos from the James Webb Space Telescope. The images include the deepest infrared view of our universe that has ever been taken. Tue, 12 Jul 2022 11:48:35 EDT //www.koonmotors.com/releases/2022/07/220712114835.htm //www.koonmotors.com/releases/2022/06/220616141516.htm A new study of an old meteorite contradicts current thinking about how rocky planets like the Earth and Mars acquire volatile elements such as hydrogen, carbon, oxygen, nitrogen and noble gases as they form. Thu, 16 Jun 2022 14:15:16 EDT //www.koonmotors.com/releases/2022/06/220616141516.htm //www.koonmotors.com/releases/2022/06/220615211334.htm Astronomers using data from the VLA Sky Survey have discovered one of the youngest known neutron stars -- possibly as young as only 14 years. The dense remnant of a supernova explosion was revealed when bright radio emission powered by the pulsar's powerful magnetic field emerged from behind a thick shell of debris from the explosion. Wed, 15 Jun 2022 21:13:34 EDT //www.koonmotors.com/releases/2022/06/220615211334.htm //www.koonmotors.com/releases/2022/06/220615134657.htm Astronomers have unveiled intricate details of the star-forming region 30 Doradus, also known as the Tarantula Nebula, using new observations from the Atacama Large Millimeter/submillimeter Array (ALMA). Now we can see the nebula in a new light, with wispy gas clouds that provide insight into how massive stars shape this region. Wed, 15 Jun 2022 13:46:57 EDT //www.koonmotors.com/releases/2022/06/220615134657.htm //www.koonmotors.com/releases/2022/06/220608091426.htm Astronomers have developed a new code to simulate the formation of a cluster of baby stars. Comparison with the well-known real case of the Orion Nebula shows that its off-center bubble of ionized gas was caused by a massive star that was pushed out of the newborn cluster but is now falling back in. Wed, 08 Jun 2022 09:14:26 EDT //www.koonmotors.com/releases/2022/06/220608091426.htm //www.koonmotors.com/releases/2022/05/220516081719.htm The extraterrestrial Hypatia stone found in Egypt could be the first tangible evidence on Earth of a supernova type Ia explosion. These rare supernovas are some of the most energetic events in the universe. If the hypothesis is correct, Hypatia would be a 'forensic' clue of an epic cosmic story started sometime in the early formation of our solar system. Mon, 16 May 2022 08:17:19 EDT //www.koonmotors.com/releases/2022/05/220516081719.htm //www.koonmotors.com/releases/2022/05/220506113319.htm 科学家们利用电脑模型来展示a hypothesized type of supernova would evolve on the scale of thousands of years, giving researchers a way to look for examples of supernovae of this model, known as 'D6.' Fri, 06 May 2022 11:33:19 EDT //www.koonmotors.com/releases/2022/05/220506113319.htm //www.koonmotors.com/releases/2022/04/220414125109.htm The MAGIC telescopes have observed the nova RS Ophiuchi shining brightly in gamma rays at extremely high energy. The Gamma rays emanate from protons that are accelerated to very high energies in the shock front following the explosion. This suggests that novae are also a source of the ubiquitous cosmic radiation in the universe which consists mainly of protons rich in energy, which race through space at almost the speed of light. Thu, 14 Apr 2022 12:51:09 EDT //www.koonmotors.com/releases/2022/04/220414125109.htm //www.koonmotors.com/releases/2022/04/220412141014.htm 引发了一些外部代理时,冲击波can propagate through molecular clouds of gas and dust to create pockets of dense material. At a certain limit, that dense gas and dust collapses and begins to form new stars. Researchers modeled this interaction using a high-power laser and a foam ball. The foam ball represents a dense area within a molecular cloud. The high-power laser creates a blast wave that propagates through a surrounding chamber of gas and into the ball, where the team observed the compression using X-ray images. Tue, 12 Apr 2022 14:10:14 EDT //www.koonmotors.com/releases/2022/04/220412141014.htm //www.koonmotors.com/releases/2022/03/220328133609.htm Helium-3, a rare isotope of helium gas, is leaking out of Earth's core, a new study reports. Because almost all helium-3 is from the Big Bang, the gas leak adds evidence that Earth formed inside a solar nebula, which has long been debated. Mon, 28 Mar 2022 13:36:09 EDT //www.koonmotors.com/releases/2022/03/220328133609.htm //www.koonmotors.com/releases/2022/03/220328092058.htm Scientists studying V Hydrae (V Hya) have witnessed the star's mysterious death throes in unprecedented detail. The team discovered six slowly-expanding rings and two hourglass-shaped structures caused by the high-speed ejection of matter out into space. Mon, 28 Mar 2022 09:20:58 EDT //www.koonmotors.com/releases/2022/03/220328092058.htm //www.koonmotors.com/releases/2022/03/220323101234.htm White dwarfs were once normal stars similar to the Sun but then collapsed after exhausting all their fuel. These interstellar remnants have historically been difficult to study. However, a recent study reveals new information about the movement patterns of these puzzling stars. Wed, 23 Mar 2022 10:12:34 EDT //www.koonmotors.com/releases/2022/03/220323101234.htm //www.koonmotors.com/releases/2022/02/220223104905.htm A research team has provided an important clue to the origin of the element Ytterbium in the Milky Way, by showing that the element largely originates from supernova explosions. The groundbreaking research also provides new opportunities for studying the evolution of our galaxy. Wed, 23 Feb 2022 10:49:05 EST //www.koonmotors.com/releases/2022/02/220223104905.htm //www.koonmotors.com/releases/2022/02/220210085007.htm The moment that debris from destroyed planets impacts the surface of a white dwarf star has been observed. Astronomers saw X-rays from planetary debris heated to a million degrees as it fell onto the dead core of its host star. Thu, 10 Feb 2022 08:50:07 EST //www.koonmotors.com/releases/2022/02/220210085007.htm //www.koonmotors.com/releases/2021/12/211216145911.htm Unlike our Sun, most stars live with a companion. Sometimes, two come so close that one engulfs the other -- with far-reaching consequences. When astronomers used the telescope Alma to study 15 unusual stars, they were surprised to find that they all recently underwent this phase. The discovery promises new insight on the sky's most dramatic phenomena -- and on life, death and rebirth among the stars. Thu, 16 Dec 2021 14:59:11 EST //www.koonmotors.com/releases/2021/12/211216145911.htm //www.koonmotors.com/releases/2021/12/211210103108.htm 一个宇宙最初归类为气体和对象dust cloud actually consists of three stars and could resolve a controversy among astronomers. Fri, 10 Dec 2021 10:31:08 EST //www.koonmotors.com/releases/2021/12/211210103108.htm //www.koonmotors.com/releases/2021/11/211124153846.htm Mounded, luminous clouds of gas and dust glow in this Hubble image of a Herbig-Haro object known as HH 45. Herbig-Haro objects are a rarely seen type of nebula that occurs when hot gas ejected by a newborn star collides with the gas and dust around it at hundreds of miles per second, creating bright shock waves. In this image, blue indicates ionized oxygen (O II) and purple shows ionized magnesium (Mg II). Researchers were particularly interested in these elements because they can be used to identify shocks and ionization fronts. This object is located in the nebula NGC 1977, which itself is part of a complex of three nebulae called The Running Man. NGC 1977 -- like its companions NGC 1975 and NGC 1973 -- is a reflection nebula, which means that it doesn't emit light on its own, but reflects light from nearby stars, like a streetlight illuminating fog. Hubble observed this region to look for stellar jets and planet-forming disks around young stars, and examine how their environment affects the evolution of such disks. Wed, 24 Nov 2021 15:38:46 EST //www.koonmotors.com/releases/2021/11/211124153846.htm //www.koonmotors.com/releases/2021/09/210916114621.htm Galaxies can receive and exchange matter with their external environment thanks to the galactic winds created by stellar explosions. An international research team has now mapped a galactic wind for the first time. This unique observation helped to reveal where some of the Universe's missing matter is located and to observe the formation of a nebula around a galaxy. Thu, 16 Sep 2021 11:46:21 EDT //www.koonmotors.com/releases/2021/09/210916114621.htm //www.koonmotors.com/releases/2021/09/210915095418.htm A 900-year-old cosmic mystery surrounding the origins of a famous supernova first spotted over China in 1181AD has finally been solved, according to an international team of astronomers. New research says that a faint, fast expanding cloud (or nebula), called Pa30, surrounding one of the hottest stars in the Milky Way, known as Parker's Star, fits the profile, location and age of the historic supernova. Wed, 15 Sep 2021 09:54:18 EDT //www.koonmotors.com/releases/2021/09/210915095418.htm //www.koonmotors.com/releases/2021/09/210902125022.htm Researchers have uncovered the physical and chemical effects of the impact of a protostellar jet in the interior of the Orion Nebula. The observations show evidence of compression and heating produced by the shock front, and the destruction of dust grains, which cause a dramatic increase in the gas phase abundance of the atoms of iron, nickel, and other heavy elements in the Orion Nebula. Thu, 02 Sep 2021 12:50:22 EDT //www.koonmotors.com/releases/2021/09/210902125022.htm //www.koonmotors.com/releases/2021/08/210824121031.htm While moving around within the gas in the interstellar medium, cosmic rays kickstart the background protons, which causes a collective plasma wave movement akin to ripples on a lake. The big question is how cosmic rays deposit their momentum into the background plasma. Plasma astrophysicists review recent developments within the field of studying the streaming instability triggered by cosmic rays, which likely have more impacts on galactic dynamics and the star formation cycle than previously known. Tue, 24 Aug 2021 12:10:31 EDT //www.koonmotors.com/releases/2021/08/210824121031.htm //www.koonmotors.com/releases/2021/08/210823085635.htm 天文学家计算出奥尔特云可能是home to more visiting objects than objects that belong to our solar system. Mon, 23 Aug 2021 08:56:35 EDT //www.koonmotors.com/releases/2021/08/210823085635.htm //www.koonmotors.com/releases/2021/08/210823085632.htm Astronomers have succeeded in quantifying the proton and electron components of cosmic rays in a supernova remnant. At least 70% of the very-high-energy gamma rays emitted from cosmic rays are due to relativistic protons, according to the novel imaging analysis of radio, X-ray, and gamma-ray radiation. The acceleration site of protons, the main components of cosmic rays, has been a 100-year mystery in modern astrophysics. Mon, 23 Aug 2021 08:56:32 EDT //www.koonmotors.com/releases/2021/08/210823085632.htm //www.koonmotors.com/releases/2021/08/210816112047.htm A region of active star formation in the constellation Ophiuchus is giving astronomers new insights into the conditions in which our own solar system was born. In particular, a new study of the Ophiuchus star-forming complex shows how our solar system may have become enriched with short-lived radioactive elements. Mon, 16 Aug 2021 11:20:47 EDT //www.koonmotors.com/releases/2021/08/210816112047.htm //www.koonmotors.com/releases/2021/07/210729095218.htm A new study suggests that previously displaced gases can re-accrete onto galaxies, potentially slowing down the process of galaxy death caused by ram pressure stripping, and creating unique structures more resistant to its effects. Thu, 29 Jul 2021 09:52:18 EDT //www.koonmotors.com/releases/2021/07/210729095218.htm //www.koonmotors.com/releases/2021/07/210722112844.htm A new survey of our home galaxy, the Milky Way, combines the capabilities of the Very Large Array and the Effelsberg telescope in Germany to provide astronomers with valuable new insights into how stars much more massive than the Sun are formed. Thu, 22 Jul 2021 11:28:44 EDT //www.koonmotors.com/releases/2021/07/210722112844.htm //www.koonmotors.com/releases/2021/07/210719110523.htm The final stage of cataclysmic explosions of dying massive stars, called supernovae, could pack an up to six times bigger punch on the surrounding interstellar gas with the help of cosmic rays, according to a new study. Mon, 19 Jul 2021 11:05:23 EDT //www.koonmotors.com/releases/2021/07/210719110523.htm