Showing 20 articles starting at article 601
< Previous 20 articles Next 20 articles >
Categories: Geoscience: Volcanoes, Space: Structures and Features
Published How does radiation travel through dense plasma?


Researchers provide experimental data about how radiation travels through dense plasmas. Their data will improve plasma models, which allow scientists to better understand the evolution of stars and may aid in the realization of controlled nuclear fusion as an alternative energy source.
Published WALLABY builds an intergalactic map in the outback


A radio telescope in remote Western Australia is helping to build a 3-dimensional map of the night sky, mapping nearby galaxies up to a billion light years away.
Published Cosmic chocolate pralines: General neutron star structure revealed


Through extensive model calculations, physicistshave reached general conclusions about the internal structure of neutron stars, where matter reaches enormous densities: depending on their mass, the stars can have a core that is either very stiff or very soft.
Published Astronomers capitalize on early access to James Webb Space Telescope data


First in line to receive data transmissions from the James Webb Space Telescope, a team of astronomers is using the unprecedentedly clear observations to reveal the secret inner workings of galaxies.
Published Safety in space: Synthetic hibernation could provide protection from cosmic radiation


It is still a glimpse into the future: Astronauts could be put into artificial hibernation and in this state be better protected from cosmic radiation. At present, there are already promising approaches to follow up such considerations. An international research team now has found decisive indications of the possible benefits of artificial hibernation for radiation resistance.
Published Study of 'polluted' white dwarfs finds that stars and planets grow together


A team of astronomers have found that planet formation in our young Solar System started much earlier than previously thought, with the building blocks of planets growing at the same time as their parent star.
Published 2400 new eyes on the sky to see cosmic rainbows


The Subaru Telescope successfully demonstrated engineering first light with a new instrument that will use about 2400 fiberoptic cables to capture the light from heavenly objects. Full operation is scheduled to start around 2024. The ability to observe thousands of objects simultaneously will provide unprecedented amounts of data to fuel Big Data Astronomy in the coming decade.
Published Searching for traces of dark matter with neutron spin clocks


An international research team has succeeded in significantly narrowing the scope for the existence of dark matter. The experiment makes an important contribution to the search for these particles.
Published Black holes don't always power gamma-ray bursts, new research shows


Space scientists may need to rethink how gamma-ray bursts are formed after new research shows new-born supramassive stars, not black holes, are sometimes responsible for these huge extragalactic bursts of energy.
Published Hubble captures three faces of evolving supernova in early universe


Three different moments in a far-off supernova explosion were captured in a single snapshot by NASA's Hubble Space Telescope. The star exploded more than 11 billion years ago, when the universe was less than a fifth of its current age of 13.8 billion years.
Published A supernova in distant space allows us to understand the origin of the elements in the universe


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.
Published NASA's MAVEN observes Martian light show caused by major solar storm


For the first time in its eight years orbiting Mars, NASA's MAVEN mission witnessed two different types of ultraviolet aurorae simultaneously, the result of solar storms that began on Aug. 27.
Published Death of a star reveals midsize black hole lurking in a dwarf galaxy


An intermediate-mass black hole lurking undetected in a dwarf galaxy revealed itself to astronomers when it gobbled up an unlucky star that strayed too close. The shredding of the star, known as a 'tidal disruption event' or TDE, produced a flare of radiation that briefly outshone the combined stellar light of the host dwarf galaxy and could help scientists better understand the relationships between black holes and galaxies.
Published Red-supergiant supernova: Secrets of an earlier Universe



An international research team has measured the size of a star dating back more than 11 billion years ago using images that show the evolution of the star exploding and cooling. The research could help scientists learn more about the early Universe.
Published Ultrathin solar cells promise improved satellite performance


As low Earth orbit becomes more cluttered, it becomes increasingly necessary to use middle Earth orbits, and radiation-tolerant cell designs will be needed. Making photovoltaics thinner should increase their longevity because the charge carriers have less far to go during their shortened lifetimes. Scientists propose a radiation-tolerant photovoltaic cell design that features an ultrathin layer of light-absorbing material. Compared to thicker cells, nearly 3.5 times less cover glass is needed for the ultra-thin cells to deliver the same amount of power after 20 years of operation.
Published Early planetary migration can explain missing planets


Computer simulations by Rice University scientists and their collaborators are the first to integrate a model of planet formation and evolution that explains two puzzling observations of exoplanets orbiting distant stars: the rarity of worlds about 1.8 times larger than Earth and the near-identical size of adjacent planets in hundreds of planetary systems.
Published Oldest planetary debris in our galaxy found from new study



Astronomers have identified the oldest star in our galaxy that is accreting debris from orbiting planetesimals, making it one of the oldest rocky and icy planetary systems discovered in the Milky Way.
Published Astronomers discover closest black hole to Earth


Astronomers have discovered the closest-known black hole to Earth. This is the first unambiguous detection of a dormant stellar-mass black hole in the Milky Way. Its close proximity to Earth, a mere 1600 light-years away, offers an intriguing target of study to advance our understanding of the evolution of binary systems.
Published Magnetized dead star likely has solid surface


A signature in the X-ray light emitted by a highly magnetized dead star known as a magnetar suggests the star has a solid surface with no atmosphere.
Published Tonga volcano had highest plume ever recorded


Using images captured by satellites, researchers have confirmed that the January 2022 eruption of the Hunga Tonga-Hunga Ha'apai volcano produced the highest-ever recorded plume. The colossal eruption is also the first to have been directly observed to have broken through to the mesosphere layer of the atmosphere.