A team of scientists has developed a new X-ray measurement method that can analyze the chemical properties of warm dense matter, a state found in planetary interiors. The method uses the strongest X-ray laser to probe carbon's bonding states, providing new insights into planetary formation and potential applications in materials science.
Clouds have been detected on the distant exoplanet WASP-127b, and their altitude has been measured for the first time. The observations reveal that water vapor is present at lower levels but screened by clouds opaque to visible light, while sodium is found in an unexpected place.
HKU astrophysicists identify historical supernova of AD 1181 with recent discovery of 'Parker's star' and its surrounding nebula Pa30. The team found the event matches ancient Chinese reports within 3.5 degrees, providing a firm historical basis for the rare Type Iax designation.
Researchers have solved the 900-year-old mystery of the Chinese supernova of 1181AD by identifying a matching nebula and star in the Milky Way. The Pa30 nebula, surrounding Parker's Star, matches the profile, location, and age of the historic supernova.
Scientists recreated Titan's conditions, studying properties of organic molecules ACN and PCN on the moon's surface. The findings could provide insights into Titan's surface cracking and confirm its mineral composition.
The Dragonfly mission will investigate Titan's surface and atmosphere, searching for chemical biosignatures and exploring the moon's active methane cycle. By analyzing the prebiotic chemistry currently taking place in Titan's atmosphere and on its surface, scientists hope to gain insights into the potential for life on the moon.
A study suggests that known geochemical processes cannot explain the high concentration of methane detected by Cassini spacecraft on Enceladus. Mathematical models suggest that microbial hydrothermal vent activity or abiotic processes could be responsible for the methane production.
Researchers have calculated that exomoons orbiting free-floating planets could harbor sufficient water to make life possible and sustain it. The study found that the presence of cosmic radiation and tidal forces could keep water in a liquid state, making these systems promising for the detection of life beyond Earth.
Researchers have discovered a persistent signature of plasma waves in the interstellar medium using Voyager 1's Plasma Wave System. The detection allows scientists to understand how the solar wind interacts with the interstellar environment.
Researchers simulate conditions necessary for Saturn's unique magnetic field, indicating higher temperatures at the equatorial region and lower temperatures at high latitudes. The findings advance the effort to map Saturn's hidden regions and provide insights into the planet's formation and evolution.
Researchers found a nanoscale aqueous fluid inclusion containing at least 15% carbon dioxide in the Sutter's Mill meteorite, confirming calcite crystals can contain liquid water and CO2. The discovery provides insights into the origins of the meteorite's parent asteroid and the solar system's early history.
Researchers at University of Würzburg are developing AI technology to analyze images from Mars and other planets, detecting previously unknown anomalies such as circular holes and geysers. The project aims to train AI on board a small satellite in space to learn independently and report discoveries back to Earth.
Scientists predict ocean currents on Enceladus, driven by salinity variations like those in Earth's Southern Ocean. The research suggests a pole-to-equator circulation influencing heat and nutrient distribution.
Researchers at North Carolina State University conducted a pilot study to model ferrovolcanism, the predicted manifestation of planetary volcanism on metallic worlds. They found that metallic lava flows travel 10 times faster and spread more thinly than rocky flows, creating braided channels with smooth, thin layers.
The SIIOS team successfully tested its technology on Greenland's surface, detecting seismic waves comparable to those from ground-based seismometers. The findings could aid NASA's future missions to Europa and Enceladus, where subsurface liquid oceans are believed to exist.
Researchers detect HCCP and CH2=C=PH, unusual phosphorus-containing molecules in interstellar clouds. The discovery paves the way for studying their properties and potential extraterrestrial detections, advancing our knowledge of astrochemistry.
Researchers found that weathering rates and atmospheric composition are crucial for a planet's habitability. Geochemistry plays a key role in determining the balance between radiation and liquid water, with extreme temperatures potentially altering this balance.
Researchers have found that subglacial lakes in Antarctica may be more hospitable to life than thought, thanks to geothermal heat. This heat can stimulate convection currents, allowing for dynamic flow and potentially supporting microbial life. The discovery opens up new avenues for exploring similar environments on icy moons and planets.
Recent research by CNRS scientists suggests Saturn's current tilt is due to the migration of its largest moon Titan and other satellites, causing it to interact with Neptune's orbit, leading to gradual tilting. The planet's axis could more than double in inclination over the next few billion years.
Cornell University researchers estimated the depth of Kraken Mare on Saturn's moon Titan to be at least 1,000 feet, using data from the Cassini mission. The sea is also massive, covering an area nearly as large as all five Great Lakes combined.
Researchers found that WASP-107b's massive gas envelope could form easily with a less massive core than previously thought, contradicting classical models of gas-giant planet formation. The discovery has significant implications for our understanding of exoplanet formation and the variety of planets in the universe.
Scientists at Southwest Research Institute modeled chemical processes in Enceladus' subsurface ocean, indicating the possibility of a diverse microbial community. The study found that oxidant production and oxidation chemistry could contribute to supporting possible life on Enceladus.
A team of researchers, led by Northern Arizona University and Lowell Observatory, will investigate the behavior of chemical elements in Titan's lakes and seas. They aim to understand how molecules interact and change under extreme conditions, which could inform NASA's Dragonfly mission and our understanding of early Earth.
A team of scientists, led by Matt Clement, used simulations to study the formation of Jupiter and Saturn. The findings suggest that these two planets were originally closer together than previously thought, with a ratio of two Jupiter orbits to one Saturnian orbit being more consistent with the current configuration.
Researchers measured the spectrum of a rare hot Neptune exoplanet, revealing evidence of molecular absorption in its atmosphere. This detection provides clues on the origin of the planet and how it managed to hold onto its atmosphere.
The Spitzer Space Telescope made significant discoveries in the solar system during its 16-year mission, providing a never-before-possible look at the universe. New papers catalog these findings and offer guidance for future scientists studying exoplanets and planet formation.
Researchers Jeremy Bloxham and Rakesh K. Yadav use a 3D simulation model to understand the formation of Saturn's massive hexagon storm, which has remained relatively unchanged for nearly 40 years. The study suggests that deep thermal convection plays a key role in creating the unique shape and persistence of the storm.
A Purdue University team has created a mobile docking system for AUVs, enabling them to perform longer tasks without human intervention. The system uses algorithms to optimize trajectories, allowing robots to autonomously dock mid-mission to recharge and transfer data.
NASA's Hubble Space Telescope has captured a crisp new image of Jupiter's storms, revealing a bright white plume traveling around the planet at 350 miles per hour. The Great Red Spot, currently an exceptionally rich red color, is shrinking in size and appears to be interacting with surrounding clouds.
Researchers used AI and quantum mechanics to study dense metallic hydrogen, finding a smooth and gradual transformation from molecular to atomic phases. The discovery resolves long-standing debates on the nature of dense hydrogen and has implications for understanding giant gas planets.
Researchers used artificial neural networks to simulate hydrogen's phase transitions at high pressures and temperatures, challenging previous assumptions. The study suggests a smooth transition between insulating and metallic layers in giant gas planets, reconciling existing discrepancies between lab and modeling experiments.
A numerical model recreates Jupiter's polygonal vortex patterns, revealing the importance of shielding and vortex depths. The study suggests that further research is needed to understand why these patterns persist on Jupiter but not on other large gas giants.
Researchers at the University of Bern have developed a new mass spectrometer, ORIGIN, capable of detecting and identifying the smallest amounts of extraterrestrial life traces. The instrument outperforms previous space instruments in terms of measurement sensitivity.
Scientists developed a theoretical method to model the interior of ice giants Uranus and Neptune, allowing analysis of thermal and electrical processes. The study provides insights into the planets' geometry and evolution, including the existence of frozen cores and magnetic field generation.
Astronomers have discovered a Saturn-sized planet orbiting a small, cool star 35 light-years from Earth using the astrometric technique. The planet has a mass comparable to Saturn and orbits its star every 221 days. This discovery is significant as it reveals that smaller planets can exist around cooler stars.
The latest Hubble image of Saturn reveals small atmospheric storms in the planet's northern hemisphere, with pronounced banding visible. The ringed planet's atmosphere is mostly hydrogen and helium, with seasonal changes due to increased sunlight also producing a reddish haze.
A new study suggests that mammalian immune cells may be less effective at detecting and responding to microorganisms from other planets, potentially posing a threat to space missions. The researchers tested the immune response of mice to peptides containing amino acids rare on Earth but common on meteorites.
Astronomers have discovered a lost planet, NGTS-11b, which orbits a star 620 light years away and is located five times closer to its sun than Earth. The discovery brings astronomers closer to finding cooler planets in the habitable 'Goldilocks zone' that can support liquid water.
Researchers successfully measured the spin-orbit alignment for the first time in a directly-imaged planetary system. The study reveals that the Beta Pictoris system is as well-aligned as our own solar system, favoring planet-planet scattering as the cause of orbit obliquities.
The Hubble Space Telescope captured an image of a young star surrounded by a disk that casts a huge, 200-light-year-long shadow. The shadow's movement was initially thought to be caused by planet warping the disk, but further observation revealed it was actually flapping like wings.
More than a quarter of exoplanets could be ocean worlds, harboring subsurface oceans and releasing energy similar to Europa and Enceladus. Scientists predict that these planets may be geologically active enough to support life, with some releasing more heat than others.
Researchers used model simulations to study Saturn's polar hexagon, discovering a potential mechanism for its formation. The simulations produced latitudinal flow jets and vortices that resembled those observed on Saturn, suggesting a possible explanation for the stable pattern.
A new model predicts the most common type of cloud on hot Jupiters, which should consist of liquid or solid silicate droplets. The study also finds that clouds can block observations of gases beneath them, hindering research on exoplanet formation and life.
The Cassini spacecraft captured high-resolution images of Saturn's Hexagon, revealing a multilayered haze system with particles as small as 1 micron. The team discovered that the hazes are organized by gravity waves and may be responsible for the hexagon's formation.
Researchers have successfully measured wind speed on a brown dwarf, an object intermediate in mass between a planet and a star. The study found that the brown dwarf's atmosphere is rotating faster than its interior, with a calculated wind speed of about 1425 miles per hour.
New analysis of data from NASA's Cassini spacecraft reveals that auroral electric currents are likely responsible for heating Saturn's upper atmosphere. The study provides the most complete mapping yet of temperature and density in a gas giant's upper atmosphere, shedding light on how heat circulates in the region.
A team led by Professor Shigeru Ida from Tokyo Institute of Technology suggests that Uranus was struck by a small icy planet, which tipped the young planet over and left behind its unique moon system. This model reproduces the current configuration of Uranus' satellites and may help explain other icy planets' configurations.
Researchers have devised a new three-dimensional model of the heliosphere, breaking down charged particles into two groups to understand its shape. The 'croissant' with a long tail and the beach ball models are now reconciled, revealing a unique shape that splits the difference between them.
Numerical simulations reveal a 'safety zone' where warmer gas pushes satellites away from their parent planets, explaining the presence of single large moons like Titan. The findings support the idea that many large moons formed along with their parent planets.
Computational simulations show that azotosomes, a proposed alternative to cell membranes, cannot form under Titan's extreme conditions. This challenges the possibility of life on Saturn's largest moon, which has liquid methane and ethane lakes and seas.
New research suggests that some 'cotton candy' exoplanets could have rings, challenging current ideas about their low densities. The discovery proposal, led by Anthony Piro and Shreyas Vissapragada, simulates how ringed exoplanets would appear to astronomers using high-precision instruments.
Scientists using ALMA detected chemical signatures of acetonitrile and its rare isotopomer in Titan's stratosphere, indicating the presence of galactic cosmic rays. The findings suggest a universal process that could influence atmospheres on other solar system bodies.
A new geochemical model suggests that Enceladus' subsurface ocean may be habitable due to chemical reactions at its seafloor, which could provide energy sources for life. The study reveals a complex core structure with diverse environments, including hydrothermal vents and carbonated rocks.
A new study suggests that Mars' ancient waters were characterized by high salinity and a neutral pH, creating an environment potentially suitable for microbial life. The research found evidence of hyposaline lakes on early Mars, which could have supported life forms similar to those found on Earth.
Researchers analyze Cassini data to study Saturn's ultraviolet auroras and their dynamic processes. The new observations provide unique views of the small-scale structures behind these auroras, revealing similarities with Jupiter's magnetosphere.
Researchers suggest a ring-like structure in the early solar system may have created a compositional dichotomy between terrestrial and jovian planets. This division may have led to the presence of organic molecules on Earth, supporting life.
Dusan Odstrcil and his team are developing a high-quality heliospheric model using Python to accelerate visualization and increase output availability. ENLIL--a time-dependent MHD model--is the only code that can simulate coronal mass ejections up to Jupiter or Saturn orbit.
NASA's Transiting Exoplanet Survey Satellite (TESS) has discovered the first planet to orbit two stars, TOI 1338 b. The exoplanet orbits a binary system consisting of a larger and smaller star, with the latter being only one-third the mass of our Sun.
The study investigates the physical forces acting on Enceladus that allow the tiger stripe fissures to form and remain in place. The researchers found that the fissures could have formed on either pole, but the south pole's unique deformation led to their formation.
Scientists have discovered that the unique tiger stripes on Enceladus are caused by tidal forces from Saturn's gravity, which release pressure and prevent the cracks from freezing shut. This allows water to erupt from the fissures, creating a regular spacing pattern.