Showing 20 articles starting at article 321
< Previous 20 articles Next 20 articles >
Categories: Geoscience: Volcanoes, Offbeat: Space
Published Groundbreaking research shows that the limits of nuclear stability change in stellar environments where temperatures reach billions of degrees Celsius
(via sciencedaily.com) Original source New research is challenging the scientific status quo on the limits of the nuclear chart in hot stellar environments where temperatures reach billions of degrees Celsius.
Published Snaps supersonic outflow of young star
(via sciencedaily.com) 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).
Published Electrons from Earth may be forming water on the Moon
(via sciencedaily.com) Planetary scientists have discovered that high energy electrons in Earth's plasma sheet are contributing to weathering processes on the Moon's surface and, importantly, the electrons may have aided the formation of water on the lunar surface.
Published Discovery of two potential Polar Ring galaxies suggests these stunning rare clusters might be more common than previously believed
(via sciencedaily.com) These new detections suggest polar ring galaxies might be more common than previously believed.
Published Water world? Methane, carbon dioxide in atmosphere of massive exoplanet
(via sciencedaily.com) 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.
Published Study hints at the existence of the closest black holes to Earth in the Hyades star cluster
(via sciencedaily.com) 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.
Published Ravenous black hole consumes three Earths'-worth of star every time it passes
(via sciencedaily.com) 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.
Published Vast bubble of galaxies discovered, given Hawaiian name
(via sciencedaily.com) Original source The immense bubble is 820 million light years from Earth and believed to be a fossil-like remnant of the birth of the universe.
Published Webb reveals new structures within iconic supernova
(via sciencedaily.com) 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.
Published Scientists detect and validate the longest-period exoplanet found with TESS
(via sciencedaily.com) 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.
Published Two out of three volcanoes are little-known. How to predict their eruptions?
(via sciencedaily.com) Original source What is the risk of a volcano erupting? To answer this question, scientists need information about its underlying internal structure. However, gathering this data can take several years of fieldwork, analyses and monitoring, which explains why only 30% of active volcanoes are currently well documented. A team has developed a method for rapidly obtaining valuable information. It is based on three parameters: the height of the volcano, the thickness of the layer of rock separating the volcano's reservoir from the surface, and the average chemical composition of the magma.
Published New giant planet evidence of possible planetary collisions
(via sciencedaily.com) 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.
Published Telescopes help unravel pulsar puzzle
(via sciencedaily.com) 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.
Published Quantum discovery offers glimpse into other-worldly realm
(via sciencedaily.com) Original source Experiments promote a curious flipside of decaying monopoles: A reality where particle physics is quite literally turned on its head
Published Mysterious Neptune dark spot detected from Earth for the first time
(via sciencedaily.com) 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.
Published How a cup of water can unlock the secrets of our Universe
(via sciencedaily.com) Original source 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.
Published Atmospheric circulation weakens following volcanic eruptions
(via sciencedaily.com) Original source An international team of scientists found that volcanic eruptions can cause the Pacific Walker Circulation to temporarily weaken, inducing El Niño-like conditions. The results provide important insights into how El Niño and La Niña events may change in the future.
Published New type of star gives clues to mysterious origin of magnetars
(via sciencedaily.com) Original source 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.
Published Using supernovae to study neutrinos' strange properties
(via sciencedaily.com) 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.
Published Hundred-year storms? That's how long they last on Saturn
(via sciencedaily.com) 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.