Articles tagged with Planets
A new class of molten planet has been discovered, with a permanent ocean of magma and a unique composition of heavy sulphur molecules. This exoplanet, L 98-59 d, is unlike any known planet in our Solar System and may be the first of its kind in the galaxy.
Researchers analyzed Ryugu asteroid samples to understand magnetic field evolution in early solar system. The study found that 23 of 28 samples exhibited stable NRM components, providing critical information on the spatiotemporal evolution of magnetic fields.
Astronomers at UCLA and UCSD have discovered hydrogen sulfide in the atmospheres of four distant gas giant planets orbiting HR 8799, confirming their planetary status. The detection uses a new data analysis technique that will improve the search for life on other planets.
A team of researchers used spectral data from the James Webb Space Telescope to study the HR 8799 star system, finding clear evidence of sulfur on three gas giant planets. This discovery suggests that these massive planets likely formed through core accretion, contradicting older models.
A team from the University of Trento has identified an empty subsurface lava tube beneath Venus' surface, estimated to be approximately one kilometer in diameter and 375 meters deep. The discovery was made possible by analyzing Magellan's radar images and provides new insights into Venus' volcanic processes and geology.
A new study from Tohoku University and other international researchers has found that an anomalous dust storm on Mars can drive the transport of water to the upper layers of the atmosphere, leading to significant water loss. This discovery opens a new path for understanding how Mars lost much of its water over time.
Researchers created the highest resolution map of dark matter, showing its interaction with normal matter through gravity. The new data from NASA's James Webb Space Telescope confirms previous research and provides new details about dark matter's influence on the Universe.
Scientists found that a planet's interior composition, specifically the 'softness' of its vortex base, determines the formation of polar vortices. The study suggests that Saturn may have a harder interior than Jupiter, leading to a single massive polar vortex, while Jupiter's softer interior gives rise to multiple smaller vortices.
Researchers from the University of Copenhagen have explained the mysterious 'red dots' seen in James Webb Space Telescope images as young black holes. The discovery provides insight into how the universe's first black holes were born and sheds light on their early development.
Mars plays a measurable role in shaping Earth's long-term climate patterns, including ice ages, through its gravitational influence and orbital cycles. The study suggests that Mars' presence is necessary for the existence of major climate cycles, which have driven evolutionary changes on Earth.
Astronomers have created a naturally occurring space weather station around complex periodic variable M dwarf stars to study the environment of planets. This discovery sheds new light on how stars affect their planets' makeup and might provide clues about the habitability of distant worlds.
An international team of astrophysicists observed four baby planets in the V1298 Tau system forming into super-Earths and sub-Neptunes. The planets' low densities, comparable to Styrofoam, were measured for the first time, providing observational proof.
A team of astronomers used NASA's JWST to reveal an alien atmosphere in the ancient, ultra-hot super-Earth TOI-561 b. The planet's thick atmosphere is upending conventional wisdom about ultra-short-period planets, and its composition could be representative of planets that formed when the universe was relatively young.
Researchers detect strong evidence for an atmosphere on ultra-hot super-Earth TOI-561 b, challenging the idea that small planets can't sustain atmospheres. The planet's unusually low density is explained by a thick volatile-rich atmosphere that circulates heat and cools the nightside.
A new study by the University of Zurich suggests that Uranus and Neptune may be more rocky than icy, challenging their classification as ice giants. The researchers developed a unique simulation process to model the planets' interiors, which found that the two planets could have either water-rich or rock-rich compositions.
Recent observations of TRAPPIST-1e, an Earth-sized exoplanet in the habitable zone, reveal hints of methane but raise questions about its atmosphere's existence. Researchers caution that more rigorous studies are needed to determine if the methane is a sign of an atmosphere or stellar contamination.
Astronomers have discovered a stellar companion near a star with hot dust, offering a complex laboratory to understand the origin and composition of this phenomenon. This breakthrough builds on decades of technological leadership in interferometry, enabling scientists to study the interaction between the companion and the dust.
Experts reach consensus on using the Global One Health Index to address complex global challenges and achieve Sustainable Development Goal 3. The index enables policy coordination across human, animal, and environmental health through globally standardized metrics.
Astronomers have confirmed the first sighting of a giant explosion on a nearby star using XMM-Newton and LOFAR telescopes. The coronal mass ejection (CME) was detected in a star with a magnetic field 300 times more powerful than our Sun, capable of stripping away the atmospheres of planets in its path.
Experimental tests demonstrate that interactions between magma oceans and primitive atmospheres during early years can produce significant amounts of water. This process has major implications for the physical and chemical properties of planets' interiors, with potential effects on core development and atmospheric composition.
A young rogue planet has displayed a record-breaking 'growth spurt', consuming 6 billion tons of gas and dust every second over several months. The observations provide insight into the turbulent infancy of such celestial bodies, revealing a tumultuous growth process similar to that of stars like our Sun.
A team of scientists from Princeton University and PPPL successfully recreated the star formation mechanism in a laboratory setting, validating astrophysical theory. The achievement marks over two decades of persistent effort and combines experimental ingenuity, theoretical insight, and advanced computational modeling.
Researchers have discovered a new type of tektite exclusively found in South Australia, recording an ancient asteroid impact event approximately 11 million years ago. The unique glasses provide valuable insights into the destructive power of past impacts and their importance for planetary defense.
Xinting Yu, an assistant professor at UT San Antonio, has been awarded the 2025 Harold C. Urey Prize for her contributions to planetary science. Her research focuses on understanding how planetary surfaces and atmospheres interact and evolve, with applications in exoplanet characterization and habitability studies.
A new study has revealed chemical signatures of ancient Martian microbial life in the Bright Angel formation, a region of Jezero Crater known for its fine-grained mudstones rich in oxidized iron and organic carbon. The findings suggest that early microorganisms may have played a role in shaping these rocks through redox reactions.
Astronomers have detected a growing planet outside our solar system in a cleared gap of a multi-ringed disk of dust and gas. The discovery provides the first direct evidence that protoplanets can create these gaps, resolving a long-standing debate in the scientific community.
Researchers at Nagoya University and the Italian National Institute for Astrophysics have determined how molten rock droplets formed in Jupiter's early days. Their study shows that chondrule characteristics are influenced by the water content of impacting planetesimals, providing a clearer picture of solar system formation.
Astronomers have devised a method to map the spottiness of distant stars using observations from NASA missions, improving understanding of planetary atmospheres and potential habitability. The new model, called StarryStarryProcess, can help discover more about exoplanet properties.
Researchers propose that Jupiter-sized exoplanets may accumulate and collapse into detectable black holes due to dark matter. This process could potentially generate multiple black holes in a single exoplanet's lifetime, making exoplanet surveys a promising method for hunting superheavy dark matter particles.
Astronomers have identified an extremely rare hierarchical quadruple star system consisting of a pair of cold brown dwarfs orbiting two young red dwarf stars. The discovery provides a unique cosmic laboratory for studying these mysterious objects, which are too big to be considered planets but also lack the mass to be full-fledged stars.
A study by researchers at UC Santa Barbara, Yale University and others found that a third of young stars have misaligned rotational axes with their protoplanetary disks. This challenges centuries-old assumptions about the alignment of stars and planets in our solar system and suggests that some stars may be born tilted.
A new study from NYU Abu Dhabi found that high-energy particles from space, known as cosmic rays, could create energy needed to support life underground on planets and moons. This process, called radiolysis, can power life even in dark, cold environments with no sunlight.
Researchers found that brines can develop for brief periods during late winter and early spring from melting frost, suggesting transient water activity is most likely during specific seasons. The study highlights the importance of targeting seasonal windows to detect brine formation with future astrobiological investigations.
A team of astronomers detected a large gas giant between three and ten times the size of Jupiter hiding in the swirling disc of gas and dust surrounding a young star called MP Mus. The discovery was made using a combination of results from the Atacama Large Millimeter/submillimeter Array (ALMA) and the European Space Agency’s Gaia miss...
New research predicts the existence of 80-100 additional satellite galaxies surrounding the Milky Way, orbiting at close distances. These 'orphan' galaxies are lost in most simulations but should have survived in the real Universe.
The DART mission's successful asteroid deflection has revealed a complex issue: massive boulders carrying three times the momentum of the spacecraft itself. This unexpected blast complicates future asteroid deflection efforts, as researchers now need to consider the physics of these chaotic and filamentary structures.
Researchers have detected planet-forming 'pebbles' around two young stars, DG Tau and HL Tau, revealing large reservoirs of pebbles out to at least Neptune-like orbits. This discovery offers an early glimpse into the formation of planetary systems and may help understand how planets are formed.
A recent study suggests that Mars' surface features were shaped by short periods of liquid water, followed by 100-million-year-long periods of desert. The research, led by University of Chicago scientist Edwin Kite, proposes a new explanation for why Mars became a barren desert planet.
The James Webb Space Telescope has captured the direct image of a previously unknown exoplanet, TWA 7 b, located within a disk of rocky debris and dust. The exoplanet is ten times lighter than previously captured ones and more similar to Earth than gas giants.
A recent paper by SwRI-led researchers summarizes the scientific community's notable progress in advancing the understanding of the formation and evolution of the inner rocky planets. The study focuses on late accretion's role in controlling the long-term evolution of these planets, with implications for their habitability.
An international team of astronomers has found a giant planet, TOI-6894b, orbiting a tiny star, TOI-6894, which is smaller than expected to host such a massive planet. The discovery challenges the core accretion theory on planet formation.
Astronomers discover a super-Earth in the habitable zone of Kepler-725, 10 times Earth's mass, using Transit Timing Variation (TTV) technique. The exoplanet receives 1.4 times solar radiation as Earth and has potential for habitability.
Researchers analyzing the atmosphere of WASP-121b using the James Webb Space Telescope detected water, carbon monoxide and silicon monoxide in both the dayside and nightside hemispheres. This is the first conclusive identification of SiO in any planetary atmosphere.
Researchers suggest wide-orbit planets are natural by-products of a chaotic early phase in planetary system development. Simulations show that internal instabilities and gravitational influence can trap planets in extreme orbits.
Politecnico di Milano will contribute to the RAMSES mission, studying Apophis' physical and dynamic properties through imagery and data gathered during its flyby. The university's team developed autonomous navigation algorithms that will serve as a test platform for new technologies.
Dr. Robin Canup, a leading expert in planetary science, has received the 2025 AAS DDA Dirk Brouwer Career Award for her groundbreaking research on planet and satellite formation, including the Earth-Moon system's origins.
Researchers use NASA's James Webb Space Telescope to investigate a protoplanetary disk around a young star in the Lobster Nebula. They found sufficient solid material to potentially form at least 10 rocky planets and detected various molecules that contribute to planetary atmospheres.
A new study from geologists at the University of Colorado Boulder found that ancient Mars was likely warm and wet, with valleys and channels formed by heavy precipitation. The team's findings add new evidence to a long-running debate in planetary science and suggest that water played a key role in shaping the Martian surface.
The discovery of large carbon deposits in Gale Crater suggests that ancient Mars had a CO2-rich atmosphere, which supported liquid water and potentially life. Scientists are now trying to determine how much of this CO2 was sequestered, and whether it impacted Mars' ability to stay warm.
A new study from the University of Texas Institute for Geophysics suggests that Mars' molten core could explain its unusual magnetic field. Researchers used computer simulations to model a fully liquid core and found that it could produce a one-sided magnetic field, matching the imprint seen today.
Researchers used TESS data to identify close-in sub-Neptunes and found that their frequency changes over time, suggesting a combination of processes shaping their formation and evolution. The study provides clues about the properties of these planets and addresses long-standing questions about their origins.
The James Webb Space Telescope has captured its first direct images of carbon dioxide in a planet outside the solar system. The observations suggest that four giant planets formed like Jupiter and Saturn by slowly building solid cores, providing strong evidence for core accretion as their formation model.
A recent PNAS study suggested Mars has a significant amount of liquid water in its mid-crust, but LASP Senior Research Scientist Bruce Jakosky challenges this conclusion. Using InSight mission data, the team found that the presence of water is not required by the data.
The Magellan Adaptive Optics Xtreme (MagAO-X) instrument observed two young planets orbiting PDS 70, revealing compact rings of dust and startling changes in brightness. The team believes these features are telltale signs of the planet's turbulent youth.
A team of researchers used JWST to study the exotic atmosphere of LTT 9779 b, revealing reflective clouds on its cooler western hemisphere. The planet's asymmetrical dayside reflectivity is driven by powerful winds that transport heat and cloud formation.
A team of researchers from Kyushu University discovered that about 60% of molecular clouds in the Small Magellanic Cloud had a filamentary structure, while 40% were 'fluffy' with higher temperatures. This finding provides new insights into star formation in early-universe-like environments.
The study analyzed material from asteroid Bennu, finding evidence of building blocks of life, water, and energy. The team also discovered evaporites, which have been found on Earth in dried-out salt lakes, providing insights into the asteroid's formation.
The completion of NASA's Pandora spacecraft bus brings the exoplanet mission one step closer to launch, set to study at least 20 planets' atmospheres for hazes, clouds, and water. The mission will utilize a novel telescope design to capture stellar surfaces and cleanly separate star and planetary signals.
A new study by University of Arizona researchers reveals a 'kiss and capture' mechanism for the formation of Pluto and its largest moon Charon. The discovery challenges decades of scientific assumptions about how planetary bodies form and evolve.
Amateur astronomers, led by Dr. Steven Hill, used a simple analytical method to map ammonia and cloud heights in Jupiter's atmosphere. They found that the primary clouds are likely composed of ammonium hydrosulphide, not ammonia ice, due to photochemical reactions.