Articles tagged with Planets
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.
Scientists have discovered birth sites of gigantic elliptical galaxies, suggesting large gas flows and galaxy collisions created these ancient systems. The research, published in Nature, may finally unravel the enigma of how these giant galaxies formed.
Researchers have discovered preserved biosignatures in volcanic caves, including calcium and sodium sulfates, indicating past microbial activity. This finding highlights lava tubes as potential refuges for microbial life, shedding light on the search for extraterrestrial life on Mars.
A team of scientists has determined that a meteorite from Mars, the Lafayette Meteorite, was exposed to liquid water 742 million years ago. The minerals in the meteorite formed when there was liquid water present on the Martian surface, providing insight into the planet's past.
Astronomers have reduced concerns about a potentially hazardous asteroid swarm near Earth after discovering fewer large space rocks than previously thought. The study found only a handful of asteroids, likely less than 14, that fit the large size class, suggesting a smaller parent object and reducing the risk of extinction-level events.
A team of astronomers discovered new insights into the forces that shape protoplanetary disks using the James Webb Space Telescope. They traced disk winds in unprecedented detail, revealing an intricate structure and a pronounced central hole inside each cone-shaped envelope of winds.
The European Southern Observatory's VISTA telescope has created the largest infrared map of the Milky Way, comprising over 200,000 images and covering an area equivalent to 8600 full moons. The dataset contains about 10 times more objects than a previous map released in 2012, including newborn stars, globular clusters, and brown dwarfs.
The James Webb Space Telescope has identified six likely rogue worlds, including the lightest ever found with a dusty disk around it. These objects offer insights into how stars and planets form, suggesting that gas giants can form in disks around young stars.
The 2024 Europlanet Science Congress (EPSC2024) will be held in Berlin from September 8-13, covering a wide range of planetary research topics. Over 1,200 scientists from Europe and worldwide are expected to attend the fully hybrid meeting.
Researchers have discovered that far-ultraviolet radiation from stellar flares on red dwarf stars can be three times more energetic than previously thought. This finding challenges existing models of exoplanet habitability and suggests that many stars may pose a risk to the potential for life on planets around them.
A new definition of a planet is proposed to replace the outdated IAU definition, which requires orbiting our sun. The new definition includes being unrestrained by the bounds of our solar system and provides quantitative criteria for defining planets.
Researchers detected hydrogen sulfide in HD 189733 b's atmosphere using the James Webb Space Telescope, shedding light on sulfur's role in planetary formation. The study also measured oxygen and carbon levels, providing insights into how planets form and evolve.
The Great Red Spot on Jupiter has persisted for at least 190 years, with its formation likely occurring after the 17th-century astronomer Giovanni Domenico Cassini's observation. The spot's longevity is due to an instability in Jupiter's intense atmospheric winds, producing a long-lasting atmospheric cell.
Researchers witness the formation of three of the universe's earliest galaxies, 13.3-13.4 billion years ago, using the James Webb Space Telescope. The discovery contributes to understanding the universe's origins and provides insight into galaxy formation, shedding light on humanity's most basic questions.
The newly discovered SPECULOOS-3b is an Earth-sized, likely airless planet orbiting a nearby ultracool dwarf star. The planet's extremely close proximity to its star has likely vaporized any atmosphere, allowing scientists to study its surface composition and history in unprecedented detail.
The study highlights the impact of volatile elements, convective mechanisms, liquid water, and carbon cycles on planetary habitability. Volatile elements affect atmospheric composition, while convection mechanisms shape surface conditions and regulate nutrient cycles.
Researchers at University of Colorado Boulder discovered that hydrogen atoms in Venus' atmosphere go into space, causing the planet to lose roughly twice as much water every day. The team found that a molecule called HCO+ is responsible for this process, which may have driven Venus to its dry state.
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.
Megan Reiter, assistant professor of physics and astronomy at Rice University, has received a $951,446 NSF grant to study the influence of neighboring stars on planet formation. Her research aims to clarify key forces shaping planet formation by exploring interplay between stars, planets, and environments.
Researchers at the University of Arizona used computer simulations and spacecraft data to study the moon's geology, finding that a dense layer of titanium-rich material sank into the interior and rose on the near side. The findings suggest that the moon 'turned itself inside out' during its formation.
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.
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.
Researchers used data from Hubble Space Telescope to determine the true colors of Neptune and Uranus, revealing they are a similar shade of greenish blue. The main difference is that Neptune has a slight hint of additional blue due to a thinner haze layer on that planet.
Researchers have observed the atmospheres of seven hot Jupiters using NASA's CUTE spacecraft, revealing that some planets lose significant gas while others remain unchanged. The findings suggest a combination of planetary size and stellar activity plays a role in atmospheric escape. CUTE's precise measurements provide valuable insights...
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.
Researchers used seismic data to locate and identify a thin layer of molten silicates overlying Mars' metallic core. The discovery reveals a denser and smaller Martian core, aligning with other geophysical data and analysis of Martian meteorites. This finding provides new insights into how Mars formed, evolved, and became a barren planet.
A team of space physicists used NASA's Parker Solar Probe to analyze whistler waves, finding they originated from disturbances in Venus' weak magnetic fields. The results support a previous study that failed to detect radio waves generated by lightning strikes on the planet.
Scientists have discovered a simple test for signs of past or present life on other planets, using artificial intelligence to distinguish between biological and abiotic samples with high accuracy. The method has the potential to revolutionize the search for extraterrestrial life and deepen our understanding of Earth's earliest life.
Researchers have discovered an unusual Jupiter-sized exoplanet, TOI-4860 b, orbiting a low-mass star in the Corvus constellation. The planet is enriched with heavy elements and takes about 1.52 days to complete its orbit, making it a 'Warm Jupiter'.
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.
A new study by NASA and Japan's Osaka University suggests that rogue planets, drifting through space without a star, may outnumber stars with orbiting worlds. The Roman Space Telescope could discover up to 400 Earth-mass rogue planets, according to the findings.
Researchers have discovered a large gas giant orbiting two stars using the radial velocities method for the first time. The newly found system, TOI-1338/BEBOP-1, is only the second binary star system known to host multiple planets ever confirmed.
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.
Saturn's rings are estimated to be 400 million years old, much younger than the planet itself, according to a new study. The researchers used dust analysis to determine the age of the rings, which are composed of ice and rocky material.
A team of scientists at MIT and elsewhere have observed a star engulfing a nearby planet, a phenomenon that will also befall Earth in 5 billion years. The star's outburst was followed by a colder, longer-lasting signal, indicating the presence of gas from the star condensing into dust.
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 new study led by University of Maryland researchers found that melted meteorites have extremely low water content, ruling them out as the primary source of Earth's water. The team suggests that unmelted, or chondritic, meteorites may be responsible for delivering water to our planet.
University of Arizona engineers create autonomous vehicle system that allows robots to scout out underground habitats on other planets. The 'Breadcrumb-Style Dynamically Deployed Communication Network' paradigm enables robots to work together without human input, addressing NASA's space technology grand challenges.