Articles tagged with Solar System Evolution
Researchers have discovered that primitive meteorites contain a different mix of potassium isotopes than those found in other, more-chemically processed meteorites. This suggests that the Solar System was formed from a 'poorly mixed cake batter' of materials, with some planets receiving a unique blend of elements from distant sources.
An international team of scientists suggests that an outward, fast migration of Jupiter can distort the configuration of Trojan swarms, resulting in more stable orbits in one swarm than the other. This new mechanism provides a natural explanation for the observed asymmetry in the number of asteroids in the L4 and L5 swarms.
Researchers at Hokkaido University have discovered a new pathway to forming presolar grains, which could help scientists better understand the interstellar environment and develop more efficient nanoparticles. The study suggests that these grains formed through a non-classical nucleation pathway, involving three distinct steps.
A new study of 25 comets has found strong evidence that comet outgassing could be the source of the chemical composition of the early solar system. The research, led by Olga Harrington Pinto, measured the ratio of water, carbon dioxide, and carbon monoxide gases from comets to test predictions of solar system formation and evolution.
The analysis of particles from asteroid Ryugu has revealed a high carbon content, similar to the Sun, and the presence of rare earth metals in concentrations 100 times higher than elsewhere in the solar system. The findings suggest that Ryugu originated from a parent asteroid formed in the outer solar nebula.
Julie Castillo-Rogez and Martin Jutzi have made significant contributions to understanding asteroids, including their origins and dynamical evolution. Their work has advanced our knowledge of asteroids, from small bodies to planetary scales, with implications for ongoing space missions.
Researchers at the University of Sheffield have proposed a novel origin for Jupiter-like planets around massive stars. Massive stars can capture or steal planets from other stars in densely populated stellar nurseries, a process known as a 'planetary heist'.
Asteroids like Bennu and Ryugu appear rough due to the loss of fine-grained regolith caused by tiny space dust grains hopping around on their surfaces. This process may help small asteroids migrate faster through space, affecting their orbits.
A new theory offers an explanation for the formation and evolution of gas giants in our solar system, proposing that a 'rebound' effect triggered their current paths. Researchers found that the primordial gas disk dissipated from the inside out, providing a natural trigger for the instability.
Researchers used NASA's Planetary Spectrum Generator to analyze light from Venus, Mars, and Jupiter, shedding new light on the presence of biosignatures and chemical compounds. The study helps clarify the association between methane on Mars and life, as well as the fate of Martian water.
Researchers suggest that asteroid Ryugu could be a relic of an ancient comet due to its high organic content and spinning top shape. The study proposes a simple physical model that fits the observed data, suggesting that comets can leave behind rocky debris in the inner solar system.
Researchers found that passing stars, misaligned binary stars, and passing gas clouds can warp protoplanetary discs, disrupting spiral structures. This warping heats up the disc, making it harder for planets to form via gravitational instability.
Researchers use ALMA and VLA to detect chaotic dust and gas streams caused by an intruder object interacting with the binary protostar. The study provides evidence of flyby events in nature, which can dramatically perturb circumstellar disks and impact planet formation.
A new study by Rice University astrophysicist André Izidoro suggests that the sun had rings before planets formed, explaining many solar system features. The model simulates the solar system's formation hundreds of times and reproduces several features missed by previous models, including pressure bumps and rings.
Researchers have uncovered the truth behind the missing volatiles in meteorites, revealing a massive shockwave phenomenon that stripped elements from planetary building blocks. This finding has significant implications for our understanding of Earth's geochemical evolution and the Solar System's youth.
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.
A new analysis suggests that a gap existed within the protoplanetary disk around 4.567 billion years ago, near the asteroid belt, affecting the composition of infant planets. The team found that meteorites from the outer region had stronger magnetic fields than those from the inner region.
A doctoral student is launching a project to quadruple the number of known active asteroids by engaging volunteers in the search. The Active Asteroids project, supported by NASA and NSF grants, aims to classify over 10 million asteroid images in the Southern Hemisphere.
Scientists have developed a novel technique to analyze magnetites in meteorites, providing a historical record of the early Solar System's dynamics. By studying the Tagish Lake meteorite, researchers infer that the parent body formed in the Kuiper Belt and moved to the asteroid belt after Jupiter's formation.
A new three-year project funded by the Heising-Simons Foundation is integrating science from paleoclimatology, geophysics, and astronomy to study the evolution of the Solar System and Earth-Moon dynamics. The CycloAstro Project will also investigate the Earth's paleoclimate system and improve cyclostratigraphy and astrochronology.
A lunar sample from the Apollo 17 mission has been analysed to determine its age, source crater and geological trajectory. The study suggests the sample is around 4.2 billion years old, providing a valuable reference point for understanding the Moon's early evolution and Earth's origins.
A Southwest Research Institute scientist has updated Mars chronology models to suggest that terrains shaped by ancient water activity on the planet's surface may be hundreds of millions of years older than previously thought. The new model also provides a revised age for Isidis Basin, now estimated to be 4-4.2 billion years old.
Astronomers have detected fast-moving carbon monoxide gas flowing away from a young, low-mass star, which may provide insight into how our own solar system evolved. The gas is thought to be produced from icy comets being vaporised in the star's asteroid belt.
Researchers at Hiroshima University have challenged a long-held timeline for cataclysmic events in the early solar system. The study suggests that the late heavy bombardment period started earlier and decreased in intensity over time.
Researchers mapped aluminum monoxide around a distant young star, clarifying details about our solar system's formation. The findings suggest that AlO gas rapidly condenses into solid grains, similar to calcium and aluminum-rich inclusions found in asteroids.
Astronomer Jason Nordhaus develops a system of complex algorithms to pinpoint existence of previously undiscovered planets and celestial bodies in dying star systems. The technique helps understand the fate of our solar system, other star systems, and stellar interactions.
Astrophysicists estimate that Centaurs will have close encounters and impacts with terrestrial planets, potentially producing catastrophic events. The researchers found that half of the Centaurs can enter the terrestrial planet region, and about 7% can interact with them.
Researchers at Far Eastern Federal University are working on a new method to determine the ratio of dust and gas in comets' tails and heads. This will help scientists better understand the Solar System's evolution and formation.
Meteorite chondrules reveal that oxygen and volatile elements increased in the inner Solar System until around 4.567 billion years ago. Volatile element delivery continued to increase after this point, supporting a model of Mars' early formation under oxidizing conditions and Earth's accretion under reducing conditions.
A University of Oklahoma astrophysics team discovered that the growth of Mars was halted by an orbital instability among the outer solar system's giant planets. The study used computer simulations to show how this instability, linked to the Nice Model, prevented Mars from becoming a larger, habitable planet like Earth.
A study by Brown University researchers maps the mineralogy of the South Pole-Aitken basin, a giant impact crater on the Moon's far side. The research identified four distinct mineralogical regions within and around the basin, providing insights for future lunar exploration and landing site selection.
Researchers aim to understand the evolution of our solar system by studying 'hot Jupiters', gas giants orbiting close to their parent stars. They will measure escaping gases and look for evidence of magnetic fields on these planets.
Researchers found organics on Ceres are likely native, contradicting earlier theories of delivery via comets or asteroids. The discovery suggests a complex chemical evolution and important astrobiological implications for the solar system.
A team led by Dr. Bill Bottke from Southwest Research Institute discovered a 400-million-year lull in Mars' giant impact history, closely paralleling the bombardment histories of the Moon, asteroid belt, and Mercury. This finding supports the Late Heavy Bombardment theory and highlights an important period in Martian evolution.
Researchers observed L2 Puppis, a star similar to the Sun 5 billion years ago, to understand its evolution and potential impact on planets. A planet orbiting the giant star may offer clues about Earth's ultimate fate.
A new simulation study suggests that Jupiter's most important role in fostering life on Earth was delivering volatile materials from the outer Solar System. The study also proposes that a Solar System with one or more planets similar to Jupiter located beyond the region of potential terrestrial planets is beneficial for life development.
Researchers at the University of York have revealed a new understanding of nucleosynthesis in stars, providing insight into massive star evolution and the origins of the Solar System. By studying radioactive aluminium production, scientists can now better understand gamma radiation maps of the galaxy and simulate star behavior.
Researchers from CSIC have determined the orbit of Annama, a new characterized meteorite, and found similarities with a potentially dangerous asteroid. The study suggests that Annama may be linked to an asteroid of about 400 meters in diameter, posing a potential threat to Earth.
A team of scientists found that collisions helped transform initially porous materials into solid asteroids and meteorites by absorbing energy in the porous matrix. This process likely occurred due to electrostatics and shock waves generated by high-velocity collisions, resulting in a cosmic speed limit for colliding objects.
A University of New Hampshire and NASA study suggests that high-energy particles from solar storms can charge the moon's polar soil, creating sparking and potentially altering its composition. This process could have significant implications for our understanding of planetary surfaces in extremely cold regions.
Researchers propose that high-energy particles from solar storms can create sparking, altering the moon's polar soil and potentially reactivating permanently shadowed regions. This 'breakdown weathering' process could change our understanding of planetary evolution in extremely cold regions.
Researchers have created a new spectrum for 'hot' methane that can be used to detect the molecule at temperatures above Earth's, potentially identifying signs of extraterrestrial life. The model has been tested and verified by reproducing the way in which methane absorbs light on failed stars.
Scientists have developed a new numerical method for simulating the evolution of the solar system, which is ten times faster and more accurate than previous methods. The collaboration between mathematicians, computer scientists, physicists, and astronomers has led to a significant improvement in the simulation's reliability over time.
A UH Mānoa team led by Ralf Kaiser discovered triacetylene formation in Titan's atmosphere through simulation experiments and theoretical calculations. This finding sheds light on the origin and chemical evolution of Saturn's moon, which may serve as a building block for more complex polyynes.
Nikolai Pogorelov, a UC Riverside researcher, has been awarded 850,000 processor hours on the seventh fastest computer in the world to study the outer heliosphere and its interaction with interstellar medium. The research will help plan future space missions and analyze fluxes of galactic cosmic rays.
Researchers have identified two distinct formation times for chondrules in the Gujba and Hammadah al Hamra meteorites, contradicting the linear process of solar system evolution. The discovery suggests that giant plumes of vapor produced by planetary collisions may have formed these chondrules much later than previously thought.
A new study finds that NASA's Space Interferometry Mission (SIM) can detect habitable planets near significantly more massive stars than the sun. The satellite will use interferometry to measure the position of stars and detect tiny wobbles caused by orbiting planets.
New Hubble images show gas shells produced by novae that may revolutionize our understanding of galactic evolution. The findings imply that novae play a significant role in the distribution of heavier elements and planetary system development, contradicting previous predictions.
Astronomers have found similarities between the composition of Comet Hale-Bopp and what appear to be similar-sized comets in other solar systems. The team used infrared observations of evolving solar systems to identify patterns in star-grazing comets, suggesting a common origin for planets.
Astrophysicists at MIT propose that newly discovered planets in Jupiter-sized systems underwent violent instability upon formation. This instability can lead to the ejection of one planet and a smaller, eccentric orbit for another, with potential consequences for planetary system evolution and intelligent life.