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Categories: Space: Cosmology, Space: Exploration
Published Earth's oldest stromatolites and the search for life on Mars
(via sciencedaily.com) The earliest morphological traces of life on Earth are often highly controversial, both because non-biological processes can produce relatively similar structures and because such fossils have often been subjected to advanced alteration and metamorphism. Stromatolites, layered organo-sedimentary structures reflecting complex interplays between microbial communities and their environment, have long been considered key macrofossils for life detection in ancient sedimentary rocks; however, the biological origin of ancient stromatolites has frequently been criticized.
Published Oldest planetary debris in our galaxy found from new study
(via sciencedaily.com) Original source 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 First glimpse of what gravity looks like on cosmological scales
(via sciencedaily.com) Scientists have reconstructed gravity to find a more robust way of understanding the cosmos.
Published Mars's crust more complex, evolved than previously thought
(via sciencedaily.com) A new study finds the original crust on Mars is more complex, and evolved, than previously thought. Researchers have determined the Martian crust has greater concentrations of the chemical element silicon, which may mean Mars' original surface may have been similar to Earth's first crust.
Published IceCube neutrinos give us first glimpse into the inner depths of an active galaxy
(via sciencedaily.com) Scientists have found evidence of high-energy neutrino emission from NGC 1068, also known as Messier 77, an active galaxy in the constellation Cetus and one of the most familiar and well-studied galaxies to date.
Published Space probe's collision with asteroid: Study assesses ejecta momentum enhancement
(via sciencedaily.com) On September 26, NASA's Double Asteroid Redirection Test (DART) spacecraft crashed into Dimorphos, a moonlet of the near-Earth asteroid Didymos, at 14,000 miles per hour. Prior to the impact, engineers and scientists performed an experiment to study the cratering process that produces the mass of ejected materials and measures the subsequent momentum enhancement of the impact.
Published Uncovering the massive quantum mysteries of black holes
(via sciencedaily.com) Bizarre quantum properties of black holes -- including their mind-bending ability to have different masses simultaneously -- have been confirmed by physicists.
Published NASA laser project benefits animal researchers
(via sciencedaily.com) NASA's Global Ecosystem Dynamics Investigation (GEDI) mission can provide valuable information about the world's forests for wildlife scientists.
Published NASA's InSight lander detects stunning meteoroid impact on Mars
(via sciencedaily.com) NASA's InSight lander recorded a magnitude 4 marsquake last Dec. 24, but scientists learned only later the cause of that quake: a meteoroid strike estimated to be one of the biggest seen on Mars since NASA began exploring the cosmos. What's more, the meteoroid excavated boulder-size chunks of ice buried closer to the Martian equator than ever found before -- a discovery with implications for NASA's future plans to send astronauts to the Red Planet.
Published Scientists use deep planetary scan to confirm Martian core
(via sciencedaily.com) Seismologists have developed a new method to scan the deep interior of planets in our solar system to confirm whether they have a core at the heart of their existence.
Published Magma on Mars likely
(via sciencedaily.com) Until now, Mars has been generally considered a geologically dead planet. An international team of researchers now reports that seismic signals indicate vulcanism still plays an active role in shaping the Martian surface.
Published Traces of ancient ocean discovered on Mars
(via sciencedaily.com) Original source A recently released set of topography maps provides new evidence for an ancient northern ocean on Mars. The maps offer the strongest case yet that the planet once experienced sea-level rise consistent with an extended warm and wet climate, not the harsh, frozen landscape that exists today.
Published Rare Earth elements synthesis confirmed in neutron star mergers
(via sciencedaily.com) When two neutron stars merge, the resultant explosion forms heavy elements -- many of which make up our Universe. A new study has identified the specific rare-earth elements produced in a neutron star merger.
Published Astronomy: Observation puzzles researchers
(via sciencedaily.com) An international team of astrophysicists has made a puzzling discovery while analyzing certain star clusters. The finding challenges Newton's laws of gravity, the researchers write in their publication. Instead, the observations are consistent with the predictions of an alternative theory of gravity. However, this is controversial among experts.
Published Cosmic rays drive galaxy's winds
(via sciencedaily.com) VLA observations revealed that cosmic rays can play an important role in driving winds that rob galaxies of the gas needed to form new stars. This mechanism may be an important factor in galactic evolution, particularly at earlier times in the history of the universe.
Published Researchers create lunar regolith bricks that could be used to construct Artemis base camp
(via sciencedaily.com) As part of NASA's Artemis program to establish a long-term presence on the moon, it aims to build an Artemis base camp that includes a modern lunar cabin, rover and mobile home. This fixed habitat could potentially be constructed with bricks made of lunar regolith and saltwater, thanks to a recent discovery.
Published Balancing risk and reward in planetary exploration
(via sciencedaily.com) Original source Researchers have developed a new approach to balancing the risks and scientific value of sending planetary rovers into dangerous situations.
Published Ancient bacteria might lurk beneath Mars' surface
(via sciencedaily.com) Scientists found that ancient bacteria could survive close to the surface on Mars much longer than previously assumed. So, if life did, in fact, evolve when the last waters flowed on Mars, it would likely still be there today -- billions of years later.
Published Using carbon-carbon clumping to detect the signature of biotic hydrocarbons
(via sciencedaily.com) The mystery of the origin of hydrocarbons found in extraterrestrial environment may finally be resolved, thanks to a technique based on a 13C-13C abundance analysis. By measuring the abundance of clumped 13C-13C isotope in the hydrocarbons, it can be inferred if a hydrocarbon was produced via biological processes. This could open doors to distinguishing such hydrocarbons from abiotic ones, aiding our search for extra-terrestrial life.
Published Unprecedented glimpse of merging galaxies
(via sciencedaily.com) Original source Using the James Webb Space Telescope to look back in time at the early universe, astronomers discovered a surprise: a cluster of galaxies merging together around a rare red quasar within a massive black hole. The findings offer an unprecedented opportunity to observe how billions of years ago galaxies coalesced into the modern universe.