Articles tagged with Planetary Systems
The NASA TESS-Keck Survey catalog features 126 exotic planets with detailed measurements allowing for comparisons with our solar system. Several planets stand out as touchstones for deepening astronomers' understanding of planetary formation and evolution.
The SPECULOOS project has discovered an Earth-sized exoplanet around SPECULOOS-3, a nearby ultra-cool dwarf star. The planet, named SPECULOOS-3 b, is similar in size to our own planet and orbits the star in just 17 hours, resulting in constant day and night conditions.
A team of astronomers and citizen scientists has discovered a planet in the habitable zone of an unusual star system, including two stars and potentially another exoplanet. The newly discovered planet, TOI 4633 c, boasts the second-longest orbit of any planet discovered with TESS data.
Researchers have found that plants help regulate the planet's atmosphere by trapping carbon and emitting oxygen, acting as a buffer against rapid climate changes. However, when climate shifts too fast for vegetation to adapt, it can lead to mass extinctions and extreme environmental changes.
Researchers introduce a new model that suggests dense stellar clusters can eject pairs of giant planets, which remain gravitationally bound to each other as they float through space. This discovery fills a critical gap in our understanding of planetary evolution and challenges prevailing theories of planet formation.
Astronomers have discovered a new black hole behavior where a smaller black hole repeatedly punches through the disk of a larger black hole, releasing plumes of gas. The findings challenge conventional views on black hole accretion disks and suggest they may be more varied in their contents.
A team of astronomers has shed new light on the process of planet formation through a groundbreaking survey of over 80 young stars. The research provides a wealth of data and unique insights into how planets arise in different regions of our galaxy, revealing diverse patterns of planet-forming discs.
Astronomers have discovered a significant amount of water vapor in the disc around a young star, located exactly where planets are thought to be forming. This finding provides new insights into the distribution of water in planet-forming discs and its potential impact on planetary formation.
Researchers at UTSA's Department of Physics and Astronomy have used deconvolution algorithms to enhance images of galaxy NGC 5728 obtained by the James Webb Space Telescope. The study reveals a faint extended feature that could be part of an outflow from a supermassive black hole interacting with the host galaxy.
The samples from Wild 2 comet have revealed a record of the solar system's dynamic formative years, shedding light on the events that shaped its history. Researchers have found unusual carbon-iron assemblages and precursors to igneous spherules in the comet material.
Experts recommend breaking with the past to develop a new international mechanism for sharing benefits from digital sequence information. The current system is threatened by the emergence of fast genome sequencing technologies and open access infrastructures.
Researchers propose that ancient planet Theia collided with Earth billions of years ago, forming two continent-sized blobs of unusual material and the Moon. The blobs, known as large low-velocity provinces (LLVPs), are rich in iron and likely composed of different proportions of elements than the mantle surrounding them.
Chinese researchers are exploring advanced porous nanomaterials and technologies to reduce radionuclide discharge into the environment. These materials possess high specific surface area, abundant pore structures, exceptional stability, and design flexibility, making them promising candidates for radionuclide removal.
A team of scientists and philosophers identifies a new law of nature that governs the evolution of complex systems, including plants, animals, stars, and minerals. The law states that complex systems evolve to states of greater patterning, diversity, and complexity, regardless of whether they are living or nonliving.
A new global study assesses the scale of metal mining contamination in river systems worldwide, impacting human populations and ecosystem services. The research estimates 23 million people affected by toxic waste, highlighting the need for new safeguards to address growing demand for 'green' minerals.
Researchers at West Virginia University have developed a technology that can capture carbon dioxide from the air of buildings and use it to produce methanol, a common chemical with numerous applications. The process is expected to increase the sustainable supply of methanol while removing greenhouse gases from the atmosphere.
A global food system model suggests that consumer choices and climate-smart technologies can help achieve net negative emissions by 2050. The study estimates that a complete transformation could remove up to 33 gigatons of carbon dioxide each year.
A new global biodiversity observing system (GBIOS) is proposed to combine technology, data, and knowledge from around the world to monitor biodiversity change and target conservation action. The system can provide the information needed at the pace required to support countries in achieving their biodiversity goals.
A new study has captured the early stages of planetary evolution, observing a young gas planet's violent and erratic atmospheric shedding. The research, led by Dartmouth researchers, provides insights into the most common experiences of planets beyond our solar system.
Researchers from Norway and France have found a way to coordinate and recalibrate two conflicting systems of dating the Moon's surface. This new evaluation shows that large parts of the crust are around 200 million years older than previously thought, clarifying the sequence of events in the evolution of the Moon's surface.
Researchers have found high levels of phosphates in the water on Saturn's moon Enceladus, a key component of DNA and cell membranes. The discovery increases the chances of finding habitable worlds across the galaxy, as Enceladus can support life over a wider range of distances from its star.
A team of astrophysicists and citizen scientists have identified three potentially habitable exoplanets discovered during NASA's Kepler space telescope's final days of operation. The planets, including K2-416 b and K2-417 b, are between the size of Earth and Neptune and orbit their stars closely.
The newly discovered planet, LP 791-18d, is almost the same size as Earth and has a chaotic environment with intense temperatures and possible volcanic activity. The planet's proximity to its neighbor LP 791-18c could create hazardous gravitational forces, but also potentially seed its atmosphere with gases and water.
Astronomers have discovered an Earth-sized planet, LP 791-18d, with active volcanoes that could sustain an atmosphere, potentially allowing for liquid water and life. The planet's unique tidal locking creates a permanent day and night side, with the night side possibly experiencing condensation of water vapor.
Researchers propose that early interactions between the magma ocean and a molecular hydrogen proto-atmosphere could have given rise to Earth's signature features, including its abundant water. The study suggests that even dry rocky material collisions would generate large quantities of water through these atmospheric-magma interactions.
A team of astronomers discovered a population of reddish Neptunian asteroids, which are thought to have formed beyond the transition boundary between neutral-colored and redder objects. The red coloration suggests these asteroids contain more volatile ices, providing insight into the early Solar System's conditions.
The study identifies five exoplanets that resemble Venus in terms of radii, masses, and atmospheric conditions. By observing these 'exo-Venus' planets using the James Webb Space Telescope, scientists hope to uncover valuable insights into Earth's future and the possibility of a runaway greenhouse climate.
A recent experiment by UC Riverside astrophysicist Stephen Kane demonstrates that a terrestrial planet in this location would have disastrous effects on the solar system. The simulation found that such a planet could destabilize Earth's orbit, making it far less habitable and potentially ejecting Mercury and Venus from the solar system.
The DART mission successfully demonstrates the feasibility of redirecting near-Earth objects like asteroids to prevent large-scale destruction. The spacecraft's impact on Dimorphos, a small asteroid moon, resulted in an orbital change that confirms the viability of asteroid deflection as a planetary defense strategy.
Astronomers have discovered a companion galaxy to z~4 starburst galaxy, rich in metals and dust. The galaxy, labeled SPT0418-SE, is remarkably mature considering its young age of 1.4 billion years.
The discovery of TOI-5205b, a Jupiter-sized gas giant, contradicts the current understanding of planet formation. The planet's existence raises questions about the role of rocky material in forming massive cores and its potential to form gas giants despite these guardrails.
Researchers used computational simulations to model Charon's internal ocean freeze and its effects on the moon's surface. The study found that the freezing of an internal ocean may have formed deep depressions along Charon's girth but was unlikely to lead to cryovolcanoes erupting with ice and water in its northern hemisphere.
Researchers are using AI to assess soil datasets and measurements, aiming to build an automated data-driven decision support system for European soils. The goal is to create an effective soil health certification system that can be used by farmers, landowners, and policy makers.
Astronomers have discovered barium in the upper layers of ultra-hot Jupiters WASP-76 b and WASP-121 b, raising questions about these planets' atmospheres. The detection challenges scientists' understanding of heavy elements' behavior in exoplanet environments.
The 2022 Europlanet Science Congress will bring together planetary scientists to discuss life beyond Earth. Over 60 scientific sessions cover topics such as current and upcoming missions, astrobiology, and space weather.
Astronomers using ALMA have imaged the debris disk of HD 53143, revealing its highly eccentric structure. The discovery provides valuable insights into planetary formation and evolution, suggesting that gravitational perturbations from planets may shape disk morphology.
A massive volcanic eruption at the end of the Triassic period caused a global cooling effect, leading to the mass extinction. The event paved the way for the rise of dinosaurs as their natural predators went extinct.
A new study finds that European diets must change to reduce climate impact, with feeding livestock low-opportunity-cost biomass offering a 31% reduction in greenhouse gas emissions. The EAT-Lancet diet, which recommends reducing animal-source foods like red meat, is at odds with circular food systems that prioritize land use efficiency.
A recent study led by the University of Texas at Austin has found that liquid water detected under Mars' ice-covered south pole is likely a dusty mirage. However, the researchers suggest that ancient lakes and riverbeds may still be present on the planet, offering clues about its wetter past.
Researchers have discovered a giant gas planet, TOI-2180 b, with a diameter comparable to Jupiter's and a mass nearly three times that of Earth. The planet is also believed to contain 105 times the mass of elements heavier than helium and hydrogen.
Scientists have made new discoveries about the early solar system using meteorite glass beads. By analyzing the isotopic compositions of elements in these beads, researchers were able to determine that massive shockwaves passing through the nebula caused the extreme heating and cooling necessary for chondrule formation.
Researchers used TRAPPIST-1's harmonious orbits to determine the impact history of its seven Earth-sized planets. The study found that these planets could have withstood only limited late bombardment, implying a relatively small amount of water arrived on time for potential life.
A new technique developed by University of Hawaii astronomer Nader Haghighipour has successfully detected a transiting circumbinary planet in TESS data. The discovery validates the method, which reduces the time to detect such planets from over a year to just five days.
Scientists study potential for life around M-dwarf planets with new telescope, finding atmospheres may be dried out due to intense radiation. The James Webb Space Telescope can detect gases in heavy carbon dioxide or oxygen-dominated atmospheres.
Researchers have discovered a uniquely shaped hot spot on a baby star 450 million light-years away, providing new clues about the formation of our solar system. The discovery confirms accretion models and sheds light on how young stars grow.
The Dartmouth Engineering team will conduct research on planetary science relating to icy planets' geophysics and astrobiology, aiming to understand the nature of these worlds and their habitability. The project will provide valuable tools for interpreting measurements taken by future missions.
Researchers analyzed images of Mercury's surface and found only 14 boulders, compared to the Moon's 30 times more frequent presence. Factors such as micrometeorite bombardment, thicker regolith, and extreme temperature fluctuations contribute to the rarity of boulders on Mercury.
The IFSS portal offers over 100 innovative solutions to improve nutrition, restore the environment, and promote social equity. It provides a platform for collaboration and access to information about game-changing solutions.
The UN Decade of Ocean Science for Sustainable Development has an ambitious agenda to transform ocean health. The initiative provides a non-prescriptive framework for transformational action across geographies, sectors, disciplines, and generations.
Research reveals physical connectivity between southern Red Sea and Indian Ocean, highlighting need for regional marine conservation approach. Genetic patterns suggest clearer separation between northern and southern parts of sea.
A new AI-powered system, Neural Lander, uses a deep neural network to help autonomous drones land more safely and quickly, while gobbling up less power. The system has been tested and achieved significant improvements in landing accuracy, with reductions of up to 100% in vertical error and 90% in lateral drift.
Researchers at Yale and the Flatiron Institute found that compact, multiple-planet systems are more likely to form around stars with lower amounts of heavy elements. This discovery suggests new insights into the formation of smaller planets and their potential for supporting life.
A University of Texas at Arlington astrophysicist has created a new online tool called BinHab that can calculate the regions of binary systems favorable for life. The tool uses a comprehensive mathematical approach to consider both stellar radiation and gravitational influence, directly relevant to NASA's Kepler mission.
A $600,000 grant will study the effects of climate change on water quality in the Chesapeake Bay. The research team aims to clarify the implications of continued threats from agricultural lands, urban sprawl, and climate change.
A recent study by Caltech researchers found that fruit flies use their antennae to quickly sense changes in wind speed, helping them maintain a steady groundspeed. The findings suggest the antennae are responsible for initial deceleration in headwinds and provide critical information to help the fly regain its original speed.
The researchers created artificial nanoassemblies inspired by plant photosystems, which may collect and convert energy. They successfully joined individual units into larger arrays, enabling complex functional nanosystems with applications in Raman spectroscopy and catalytic processes.
A team of astronomers found that butterfly-shaped planetary nebulae are mysteriously aligned in the sky, with their long axes aligned along the plane of our galaxy. This surprising result hints at a more mysterious factor influencing the formation of these objects, possibly due to strong magnetic fields as the bulge formed.
Researchers are collecting high-tech sensing data from various sources to create a reliable early-warning system for train operators. The goal is to predict natural disasters and possible terror attacks on rail lines.
A miniscule detector developed by Merlijn Hajenius at Delft University of Technology has shown promising results for studying cosmic radiation and its impact on the universe. The detector, which uses a superconductor to detect terahertz frequencies, offers new insights into star systems and planetary birth.
The Antarctic ozone hole has broken records for area and depth, with an average area of 10.6 million square miles and a record low ozone value of 85 Dobson Units. The large ozone hole is caused by human-produced compounds releasing chlorine and bromine gases in the stratosphere.