//www.koonmotors.com/news/space_time/sun/ News about the Sun. Science articles on Sunspots and the Sun's Corona; evidence the Sun has a companion star; images from the far side of the Sun and more. en-us Fri, 08 Sep 2023 17:20:01 EDT Fri, 08 Sep 2023 17:20:01 EDT 60 //www.koonmotors.com/images/scidaily-logo-rss.png//www.koonmotors.com/news/space_time/sun/ For more science news, visit ScienceDaily. //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/2023/08/230829160720.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/2023/08/230811115442.htm With methods of so-called geoengineering, the climate could theoretically be artificially influenced and cooled. Researchers have now investigated whether it would be possible to prevent the melting of the West Antarctic ice sheet by artificially 'dimming the sun'. The results show that artificial influence does not work without decarbonization and entails high risks. Fri, 11 Aug 2023 11:54:42 EDT //www.koonmotors.com/releases/2023/08/230811115442.htm //www.koonmotors.com/releases/2023/08/230810180120.htm On Aug. 12, 2023, NASA's STEREO-A spacecraft will 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/2023/08/230804123749.htm Geophysicists studied the activity of high energy electrons and clarified the unexpected protective role of the geomagnetic field surrounding the Earth. Fri, 04 Aug 2023 12:37:49 EDT //www.koonmotors.com/releases/2023/08/230804123749.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/2023/07/230731151552.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 //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/2023/07/230727144159.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/2023/07/230720124844.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 //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/2023/07/230717180004.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/2023/07/230713192849.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. Thu, 13 Jul 2023 19:28:47 EDT //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/2023/07/230712124750.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/2023/07/230705143017.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/2023/06/230628130343.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 //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/2023/06/230615183212.htm Princeton researchers used observations from NASA'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 //www.koonmotors.com/releases/2023/06/230615105314.htm 极端空间天气的威胁至关重要的卫星啊rbiting 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 //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 //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 //www.koonmotors.com/releases/2023/06/230614220603.htm Researchers have unveiled the discovery of intense wave energy from a relatively cool, dark and strongly magnetized plasma region on the Sun, capable of traversing the solar atmosphere and maintaining temperatures of a million degrees Kelvin inside the corona. Researchers say the finding is the latest key to unraveling a host of related mysteries pertaining to Earth's nearest star. Wed, 14 Jun 2023 22:06:03 EDT //www.koonmotors.com/releases/2023/06/230614220603.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/2023/06/230612114702.htm New simulations offer new explanation for star's 85-year flare. In this scenario, a young giant planet is burning up very close to its star, suggesting solar systems may have hosted many of such planets that have since 'evaporated'. Mon, 12 Jun 2023 11:47:02 EDT //www.koonmotors.com/releases/2023/06/230612114702.htm //www.koonmotors.com/releases/2023/06/230609125639.htm Researchers are working on sustainable technology to harvest solar power in space -- which could supplement life support systems on the Moon and Mars. Fri, 09 Jun 2023 12:56:39 EDT //www.koonmotors.com/releases/2023/06/230609125639.htm //www.koonmotors.com/releases/2023/06/230608195742.htm 天文学家长期以来关于t的信念的挑战he isolation of 'hot Jupiters' and proposes a new mechanism for understanding the exoplanets' evolution. Thu, 08 Jun 2023 19:57:42 EDT //www.koonmotors.com/releases/2023/06/230608195742.htm //www.koonmotors.com/releases/2023/06/230607124055.htm Researchers used data from NASA's Parker Solar Probe to explain how the solar wind is capable of surpassing speeds of 1 million miles per hour. They discovered that the energy released from the magnetic field near the sun's surface is powerful enough to drive the fast solar wind, which is made up of ionized particles -- called plasma -- that flow outward from the sun. Wed, 07 Jun 2023 12:40:55 EDT //www.koonmotors.com/releases/2023/06/230607124055.htm //www.koonmotors.com/releases/2023/06/230606111639.htm When it comes to supplying energy for space exploration and settlements, commonly available solar cells made of silicon or gallium arsenide are still too heavy to be feasibly transported by rocket. To address this challenge, a wide variety of lightweight alternatives are being explored, including solar cells made of a thin layer of molybdenum selenide, which fall into the broader category of 2D transition metal dichalcogenide (2D TMDC) solar cells. Researchers propose a device design that can take the efficiencies of 2D TMDC devices from 5%, as has already been demonstrated, to 12%. Tue, 06 Jun 2023 11:16:39 EDT //www.koonmotors.com/releases/2023/06/230606111639.htm //www.koonmotors.com/releases/2023/06/230601160211.htm The new findings challenge the conventional understanding of solar dynamics and could improve predictions of solar weather in the future. Thu, 01 Jun 2023 16:02:11 EDT //www.koonmotors.com/releases/2023/06/230601160211.htm //www.koonmotors.com/releases/2023/05/230529171755.htm A third of the exoplanets orbiting common M dwarf stars have gentle enough orbits to potentially be in the habitable zone capable of hosting liquid water. Mon, 29 May 2023 17:17:55 EDT //www.koonmotors.com/releases/2023/05/230529171755.htm //www.koonmotors.com/releases/2023/05/230525141511.htm Astronomers are suggesting a new way to expand the search for habitable planets that takes into account a zone not previously considered: the space between the star and what's called soot-line in planet-forming disks. Thu, 25 May 2023 14:15:11 EDT //www.koonmotors.com/releases/2023/05/230525141511.htm //www.koonmotors.com/releases/2023/05/230523123642.htm Astronomers have come up with what they say is some of their best evidence yet for the presence of a rare class of 'intermediate-sized' black hole that may be lurking in the heart of the closest globular star cluster to Earth, located 6,000 light-years away. Tue, 23 May 2023 12:36:42 EDT //www.koonmotors.com/releases/2023/05/230523123642.htm //www.koonmotors.com/releases/2023/05/230519104549.htm Researchers have observed the X-ray emission of the most luminous quasar seen in the last 9 billion years of cosmic history, known as SMSS J114447.77-430859.3, or J1144 for short. The new perspective sheds light on the inner workings of quasars and how they interact with their environment. Fri, 19 May 2023 10:45:49 EDT //www.koonmotors.com/releases/2023/05/230519104549.htm //www.koonmotors.com/releases/2023/05/230515131947.htm Astronomers have described the first radiation belt observed outside our solar system, using a coordinated array of 39 radio dishes from Hawaii to Germany to obtain high-resolution images. The images of persistent, intense radio emissions from an ultracool dwarf reveal the presence of a cloud of high-energy electrons trapped in the object's powerful magnetic field, forming a double-lobed structure analogous to radio images of Jupiter's radiation belts. Mon, 15 May 2023 13:19:47 EDT //www.koonmotors.com/releases/2023/05/230515131947.htm //www.koonmotors.com/releases/2023/05/230511164445.htm Scientists analyzed over a decade's worth of data about 16 young supermassive stars orbiting the supermassive black hole at the center of the Milky Way galaxy. Supermassive stars typically are formed in pairs, but the new study found that all 16 of the stars were singletons. The findings support a scenario in which the supermassive black hole drives nearby stars to either merge or be disrupted, with one of the pair being ejected from the system. Thu, 11 May 2023 16:44:45 EDT //www.koonmotors.com/releases/2023/05/230511164445.htm //www.koonmotors.com/releases/2023/05/230509122026.htm 三年在the height of the COVID-19 pandemic, a group of students spent an estimated 56,000 hours analyzing the behavior of hundreds of solar flares. Their results could help astrophysicists understand how the sun's corona reaches temperatures of millions of degrees Fahrenheit. Tue, 09 May 2023 12:20:26 EDT //www.koonmotors.com/releases/2023/05/230509122026.htm //www.koonmotors.com/releases/2023/05/230508150926.htm Astronomers used NASA's James Webb Space Telescope to image the warm dust around a nearby young star, Fomalhaut, in order to study the first asteroid belt ever seen outside of our solar system in infrared light. But to their surprise, the dusty structures are much more complex than the asteroid and Kuiper dust belts of our solar system. Overall, there are three nested belts extending out to 14 billion miles (23 billion kilometers) from the star; that's 150 times the distance of Earth from the Sun. The scale of the outermost belt is roughly twice the scale of our solar system's Kuiper Belt of small bodies and cold dust beyond Neptune. The inner belts -- which had never been seen before -- were revealed by Webb for the first time. Mon, 08 May 2023 15:09:26 EDT //www.koonmotors.com/releases/2023/05/230508150926.htm //www.koonmotors.com/releases/2023/05/230504111846.htm The young star TW Hydrae is playing 'shadow puppets' with scientists observing it with NASA's Hubble Space Telescope. In 2017, astronomers reported discovering a shadow sweeping across the face of a vast pancake-shaped gas-and-dust disk surrounding the red dwarf star. The shadow isn't from a planet, but from an inner disk slightly inclined relative to the much larger outer disk -- causing it to cast a shadow. One explanation is that an unseen planet's gravity is pulling dust and gas into the planet's inclined orbit. The young star TW Hydrae is playing 'shadow puppets' with scientists observing it with NASA's Hubble Space Telescope. Now, a second shadow -- playing a game of peek-a-boo -- has emerged in just a few years between observations stored in Hubble's MAST archive. This could be from yet another disk nestled inside the system. The two disks are likely evidence of a pair of planets under construction. Thu, 04 May 2023 11:18:46 EDT //www.koonmotors.com/releases/2023/05/230504111846.htm //www.koonmotors.com/releases/2023/05/230503154611.htm This year and next, Americans will have the extraordinary opportunity to witness two solar eclipses as both will be visible throughout the continental U.S. Both occurrences promise to be remarkable events and teachable moments but preparation is essential. Astronomers provide a practical playbook to help teachers, students, and the general public prepare for the eclipse events. Wed, 03 May 2023 15:46:11 EDT //www.koonmotors.com/releases/2023/05/230503154611.htm //www.koonmotors.com/releases/2023/05/230503121315.htm Scientists have observed a star swallowing a planet for the first time. Earth will meet a similar fate in 5 billion years. Wed, 03 May 2023 12:13:15 EDT //www.koonmotors.com/releases/2023/05/230503121315.htm //www.koonmotors.com/releases/2023/05/230502132256.htm The first building blocks of life on Earth may have formed thanks to eruptions from our Sun, a new study finds. A series of chemical experiments show how solar particles, colliding with gases in Earth's early atmosphere, can form amino acids and carboxylic acids, the basic building blocks of proteins and organic life. Tue, 02 May 2023 13:22:56 EDT //www.koonmotors.com/releases/2023/05/230502132256.htm //www.koonmotors.com/releases/2023/04/230427223227.htm A team of Japanese astronomers used simultaneous ground-based and space-based observations to capture a more complete picture of a superflare on a star. The observed flare started with a very massive, high-velocity prominence eruption. These results give us a better idea of how superflares and stellar prominence eruptions occur. Thu, 27 Apr 2023 22:32:27 EDT //www.koonmotors.com/releases/2023/04/230427223227.htm //www.koonmotors.com/releases/2023/04/230425111159.htm We have known for a while that asteroid 3200 Phaethon acts like a comet. It brightens and forms a tail when it's near the Sun, and it is the source of the annual Geminid meteor shower, even though comets are responsible for most meteor showers. Scientists had blamed Phaethon's comet-like behavior on dust escaping from the asteroid as it's scorched by the Sun. However, a new study using two NASA solar observatories reveals that Phaethon's tail is not dusty at all but is actually made of sodium gas. Tue, 25 Apr 2023 11:11:59 EDT //www.koonmotors.com/releases/2023/04/230425111159.htm //www.koonmotors.com/releases/2023/04/230418142335.htm A star's chemical composition strongly influences the ultraviolet radiation it emits into space and thus the conditions for the emergence of life in its neighborhood. Tue, 18 Apr 2023 14:23:35 EDT //www.koonmotors.com/releases/2023/04/230418142335.htm //www.koonmotors.com/releases/2023/04/230413154452.htm Astronomers report the first exoplanet jointly discovered through direct imaging and precision astrometry, a new indirect method that identifies a planet by measuring the position of the star it orbits. Data from the Subaru Telescope in Hawai`i and space telescopes from the European Space Agency (ESA) were integral to the team's discovery. Thu, 13 Apr 2023 15:44:52 EDT //www.koonmotors.com/releases/2023/04/230413154452.htm //www.koonmotors.com/releases/2023/04/230413154326.htm From Earth, giant elliptical galaxies resemble highly symmetric blobs, but what's their real 3D structure? Astronomers have assembled one of the first 3D views of a giant elliptical galaxy, M87, whose central supermassive black hole has already been imaged by the Event Horizon Telescope. M87 turns out to be triaxial, like a potato. The revised view provides a more precise measure of the mass of the central black hole: 5.37 billion solar masses. Thu, 13 Apr 2023 15:43:26 EDT //www.koonmotors.com/releases/2023/04/230413154326.htm //www.koonmotors.com/releases/2023/04/230412131102.htm Can humans endure long-term living in deep space? The answer is a lukewarm maybe, according to a new theory describing the complexity of maintaining gravity and oxygen, obtaining water, developing agriculture and handling waste far from Earth. Wed, 12 Apr 2023 13:11:02 EDT //www.koonmotors.com/releases/2023/04/230412131102.htm //www.koonmotors.com/releases/2023/04/230406114006.htm Following in the footsteps of the Neptune image released in 2022, NASA's James Webb Space Telescope has taken a stunning image of the solar system's other ice giant, the planet Uranus. The new image features dramatic rings as well as bright features in the planet's atmosphere. The Webb data demonstrates the observatory's unprecedented sensitivity for the faintest dusty rings, which have only ever been imaged by two other facilities: the Voyager 2 spacecraft as it flew past the planet in 1986, and the Keck Observatory with advanced adaptive optics. Thu, 06 Apr 2023 11:40:06 EDT //www.koonmotors.com/releases/2023/04/230406114006.htm //www.koonmotors.com/releases/2023/04/230405090430.htm The amino acid abundances of two Ryugu particles were measured and compared with their rocky components. The results demonstrate the important role that water plays in the formation of amino acids on the giant precursors of asteroids like Ryugu. Our solar system formed from a molecular cloud, which was composed of gas and dust that was emitted into the interstellar medium (ISM), a vast space between stars. On collapse of the molecular cloud, the early sun was formed, with a large disk of gas and dust orbiting it. The dusty material collided to produce rocky material that would eventually grow in size to give large bodies called planetesimals. Wed, 05 Apr 2023 09:04:30 EDT //www.koonmotors.com/releases/2023/04/230405090430.htm //www.koonmotors.com/releases/2023/04/230404133318.htm Earth's magnetic field does more than keep everyone's compass needles pointed in the same direction. It also helps preserve Earth's sliver of life-sustaining atmosphere by deflecting high energy particles and plasma regularly blasted out of the sun. Researchers have now identified a prospective Earth-sized planet in another solar system as a prime candidate for also having a magnetic field -- YZ Ceti b, a rocky planet orbiting a star about 12 light-years away from Earth. Tue, 04 Apr 2023 13:33:18 EDT //www.koonmotors.com/releases/2023/04/230404133318.htm //www.koonmotors.com/releases/2023/03/230328145329.htm Asteroids sharing their orbits with the planet Neptune have been observed to exist in a broad spectrum of red color, implying the existence of two populations of asteroids in the region, according to a new study by an international team of researchers. Tue, 28 Mar 2023 14:53:29 EDT //www.koonmotors.com/releases/2023/03/230328145329.htm //www.koonmotors.com/releases/2023/03/230327163230.htm Astronomers have found the atmospheric compositions of giant planets out in the galaxy do not fit our own solar system trend. Mon, 27 Mar 2023 16:32:30 EDT //www.koonmotors.com/releases/2023/03/230327163230.htm //www.koonmotors.com/releases/2023/03/230327163227.htm 一个国际研究小组的研究人员利用美国国家航空航天局's James Webb Space Telescope to measure the temperature of the rocky exoplanet TRAPPIST-1 b. The measurement is based on the planet's thermal emission: heat energy given off in the form of infrared light detected by Webb's Mid-Infrared Instrument (MIRI). The result indicates that the planet's dayside has a temperature of about 500 kelvins (roughly 450 degrees Fahrenheit) and suggests that it has no significant atmosphere. Mon, 27 Mar 2023 16:32:27 EDT //www.koonmotors.com/releases/2023/03/230327163227.htm //www.koonmotors.com/releases/2023/03/230323103350.htm Machine learning and state-of-the-art supernova nucleosynthesis has helped researchers find that the majority of observed second-generation stars in the universe were enriched by multiple supernovae. 星期四,2023年3月23日10:33:50美国东部时间 //www.koonmotors.com/releases/2023/03/230323103350.htm //www.koonmotors.com/releases/2023/03/230322140338.htm When the first interstellar comet ever seen in our solar system was discovered in 2017, one characteristic -- an unexplained acceleration away from the sun -- sparked wild speculation, including that it was an alien spacecraft. An astrochemist found a simpler explanation and tested it with an astronomer: in interstellar space, cosmic rays converted water to hydrogen in the comet's outer layers. Nearing the sun, outgassed hydrogen gave the tiny comet a kick. Wed, 22 Mar 2023 14:03:38 EDT //www.koonmotors.com/releases/2023/03/230322140338.htm