Missing chromium is clue to planet formation
Early Earth's core may have formed from lighter chromium isotopes, which are mostly missing from the planet's mantle and crust. This finding provides new insights into the planet formation process.
Solar System Formation
Articles tagged with Solar System Formation
Back to the roots of the solar system
Two new observations reveal detailed structures in protoplanetary disks of two young stars, including a large gap similar to our solar system's. The images suggest the presence of one or more massive planets sweeping up material from the disk, potentially forming an entire planetary system.
Stardust NExT set to meet its second comet
The Stardust NExT spacecraft will visit comet Tempel 1, taking photos of the crater formed during the Deep Impact mission. It will also measure particle size and distribution, and analyze their composition.
CU-Boulder student dust counter breaks distance record on New Horizons mission to Pluto
The CU-Boulder student-built dust counter on NASA's New Horizons mission has reached a distance of 1.67 billion miles from Earth, breaking the record for the most distant working space dust detector. The instrument collected data in agreement with earlier measurements made by NASA's Galileo and Ulysses missions to Jupiter.
Planet Neptune not guilty of harassment
Researchers found binary systems in the Kuiper Belt would be destroyed by Neptune's interaction, contradicting previous assumptions. The study suggests the region formed near its present location and remained undisturbed over the age of the solar system.
'Coreshine' sheds light on the birth of stars
Astronomers have discovered a new phenomenon called coreshine, which scatters mid-infrared light by large dust grains in cosmic clouds. This discovery promises to reveal crucial information about the earliest phase of star formation.
NASA grant supports center for astrobiology in search for conditions of life in the universe
The New York Center for Astrobiology will expand its research with a new NASA grant, searching for the building blocks of life beyond Earth. Researchers study the chemical and physical conditions on Earth that gave birth to life and apply this information to search for similar conditions elsewhere in our solar system.
Exoplanet caught on the move
The discovery of exoplanet Beta Pictoris b, located 60 light-years from Earth, confirms that giant planets can form in time-spans as short as a few million years. The planet has a massive nine-Jupiter-mass orbit, challenging previous theories on planetary formation.
Silver tells a volatile story of Earth's origin
Researchers found that water and key volatiles may have been present in Earth's original building blocks, contradicting previous theories. The study suggests a complex accretion process for the planet, with volatile-rich material added in late stages of formation.
Water was present during birth of Earth
Scientists have found that volatile elements, including water, were present during the violent process of Earth's birth. The discovery, made using high precision equipment to measure Silver isotopes in rocks, suggests that comets and asteroids may not have brought significant amounts of volatile elements to Earth.
Rock of ages: Clues about Mars evolution revealed
A new study reveals that a Martian meteorite, ALH84001, is approximately 4.091 billion years old, significantly younger than previously estimated ages. This finding suggests that volcanic activity was ongoing in Mars for much of its history and has implications for understanding the planet's evolution.
'Ultra-primitive' particles found in comet dust
Researchers found ultra-primitive material with higher abundances of presolar grains, indicating a diverse processing of materials in different comets. This discovery allows for comparison of cosmic processes on a microscopic scale four-and-a-half billion years ago.
Study of first high-resolution images of Pallas confirms asteroid is actually a protoplanet
A UCLA-led study confirms Pallas, the second-largest asteroid, is a protoplanet due to its unique shape and color variation. The research reveals a dynamic surface with areas of dark and light, indicating internal changes, similar to those found on planets.
Researchers make rare meteorite find using new camera network in Australian desert
A team of researchers has found a rare meteorite in the Western Australian desert and tracked its orbit using a new camera network. The meteorite is composed of basaltic igneous rock and is believed to have formed deep in the inner Solar System, providing clues about the origins of the Solar System.
James Webb Space Telescope begins to take shape at Goddard
The James Webb Space Telescope's Integrated Science Instrument Module (ISIM) has arrived at NASA Goddard for testing, featuring four scientific instruments and a critical cryogenic structure. The ISIM will undergo rigorous qualification testing to ensure its ability to survive space and extreme cold.
Evidence of liquid water in comets reveals possible origin of life
A new study published in the International Journal of Astrobiology claims that comets contained vast oceans of liquid water during their formation, providing ideal conditions for primitive bacteria to grow and multiply. The study's findings support the theory of cometary panspermia, which suggests that life was introduced to Earth by c...
New findings on the birth of the solar system
Researchers at Monash University discovered that early meteorites' radioactive nuclei could have originated from a nearby giant star. The presence of these nuclei affects the evolution of planetary systems and the origin of Earth's water.
Primitive asteroids in the main asteroid belt may have formed far from the sun
Numerical simulations show that comet-like objects in a disk outside the solar system were scattered into the outer asteroid belt during a violent phase of planetary evolution. The models suggest that dramatic upheaval occurred in the solar system around 3.9 billion years ago, affecting nearly every nook and cranny.
Keeping a 'trained eye' on the James Webb Space Telescope
Engineers at NASA Goddard and Northrop Grumman are simulating the handling of the telescope's mirror segments, which will be assembled into the Primary Mirror Assembly. The mock-up has already been beneficial in preparing for integration and test operations.
Meteorite grains divulge Earth's cosmic roots
New research using meteorite grains reveals that the material incorporated into Earth's planets and life has younger cosmic roots than previously thought. The study found that most of these grains spent less time in interstellar space than estimated, with some as young as 3 million years old.
Radio telescope images reveal planet-forming disk orbiting twin suns
The study uses radio telescope images to confirm the presence of a rotating molecular disk orbiting the young binary star system V4046 Sagittarii. The discovery expands the number of places to look for extrasolar planets, suggesting that planet formation may occur around double stars as easily as single stars.
MESSENGER discovers an unusual impact basin on Mercury
Scientists have discovered a previously unknown, massive impact basin named Rembrandt on Mercury's surface. The 700-kilometer-wide basin is younger than most other known impact basins and features unique tectonic landforms that formed after volcanic flows filled it.
Astronomers unveiling life's cosmic origins
Researchers have discovered complex organic molecules in interstellar space using powerful radio telescopes. Detailed images of protoclusters reveal a complex mix of stars in different stages of formation.
James Webb space telescope's actual 'spine' now being built
The James Webb Space Telescope's Backplane, a critical component supporting the 21-foot primary mirror, is being assembled with unprecedented thermal stability performance. This structure will maintain motionlessness to enable precise focusing of telescope optics and instruments, crucial for discovering the first stars and galaxies.
SwRI-led Center for Lunar Origin and Evolution selected to be part of NASA Lunar Science Institute
A team led by Southwest Research Institute (SwRI) has been selected by NASA to focus on expanding knowledge of the Moon's formation and bombardment history. The four-year project will unravel the origin of the Earth-Moon system and the early evolution of the solar system through a multidisciplinary approach.
Scientists publish first ever evidence of asteroids with Earth-like crust
Two rare meteorites from Antarctica reveal the presence of an ancient asteroid with a crust similar to Earth's continents. The discovery provides new insights into the formation of andesite crust in our Solar System, challenging traditional plate tectonics theories.
Comet particles provide glimpse of solar system's birth spasms
Comet particles from Wild 2 provide a glimpse of the solar system's early convulsions, flinging primordial material out into the cold regions. The particles contain minerals formed at high temperatures, suggesting transport from the inner to outer solar system.
MIT researchers find clues to planets' birth
Meteorites containing ancient magnetic records have provided new insights into the early history of planets. The study suggests that small bodies in the solar system were large enough to melt and form magnetic dynamos, overturning previous ideas about planet formation.
'Little bang' triggered solar system formation
Researchers at Carnegie Institution resolve solar system formation with detailed model of supernova triggering collapse. The 'Little Bang' theory suggests a supernova shock wave triggered the Sun and planets.
Comet dust reveals unexpected mixing of solar system
Researchers analyzed oxygen isotope compositions of comet Wild 2's halo crystals, finding signatures similar to asteroids and the sun. This suggests heat-processed particles were transported outward in the young solar system, complicating theories on its early history.
Immigrant Sun: Our star could be far from where it started in Milky Way
New simulations suggest that stars like our sun can migrate great distances in galaxies similar to the Milky Way, potentially altering our view of habitable zones. This finding could change scientists' understanding of where and how life could evolve in a galaxy.
New computer simulations show how special the solar system is
The study reveals that the formation of planetary systems was full of violence and drama, but our solar system required conditions to be just right. The researchers ran over 100 simulations, showing that an average planetary system's origin was dramatic, with planets being flung into space or crowded together.
Study puts solar spin on asteroid moon formation
Scientists propose that sunlight increases or decreases the spin rate of asteroids, leading to moon formation through material slung off at the equator. This process exposes fresh material at the poles and coalesces into a satellite orbiting its parent.
Chemical clues point to dusty origin for Earth-like planets
Researchers analyze sodium content of grains from the Semarkona meteorite, finding higher-than-expected levels that contradict previous models. The discovery suggests dust clouds were denser than thought, leading to a new understanding of the solar system's formation.
Refining the date of the K/T boundary and the dinosaur extinction
Researchers at the University of California, Berkeley, have improved the argon-argon dating method to provide more precise absolute dates for geologic events, including the Cretaceous-Tertiary boundary and dinosaur extinction. The new date is 65.95 million years ago, with an uncertainty of 40,000 years.
New theory sheds light on space enigma
Scientists have shed light on Enceladus' space enigma by explaining the dynamics of its erupting plume. The new theory suggests that dust particles and water vapor form below the moon's surface, with temperature and pressure conditions allowing for rapid water vapor eruption and slower dust particle ejection.
Many, perhaps most, nearby sun-like stars may form rocky planets
Astronomers have discovered that many nearby sun-like stars may form rocky planets, with potential for life being more common than thought. The study suggests that at least 20 percent to 60 percent of stars similar to the sun are candidates for forming terrestrial worlds.
Stardust comet dust resembles asteroid materials
New research reveals that comet Wild 2's sample is missing ingredients expected in cometary IDPs and resembles chondritic meteorites from the asteroid belt. The high-speed capture of Stardust particles may have altered the material.
Red dust in planet-forming disk may harbor precursors to life
Researchers found tholins in the disk of red dust around HR 4796A, a eight-million-year-old star with planets forming. The presence of these complex molecules suggests that basic building blocks of life may be common in planetary systems.
Earliest stage of planet formation dated
Researchers at UC Davis have determined the earliest stage of planet formation occurred approximately 4,568 million years ago. This finding provides new insights into the timing and physics of this critical process, shedding light on how mountain-sized chunks of rock coalesced from interstellar dust.
James Webb Space Telescope marks successful completion
The James Webb Space Telescope has successfully completed its preliminary design review, verifying the integrated performance of its Optical Telescope Element. The telescope, set to be the premier space observatory of the next decade, will study various phases in the universe's history.
Youngest solar systems detected by U-M astronomers
Researchers at the University of Michigan have found two young stars with gaps in their protoplanetary disks, suggesting infant planets cleared debris. The study provides new insights into solar system formation and history.
Washington University scientists analyze solar wind samples from Genesis mission
Scientists analyzed neon and argon samples from NASA's Genesis mission to determine the isotopic composition of noble gases in the sun. The results show that the isotopic composition is consistent across different regimes of solar wind, indicating that measuring solar wind samples can represent the solar corona.
Circumstellar space: Where stars are born
In the circumstellar environment, newly formed elements make compounds and life takes off for the first time. The shells around dying stars enable a chemistry that produced grains older than our sun itself.
University of Colorado instruments to launch on NASA cloud mission April 25
A satellite carrying CU-Boulder instruments will probe noctilucent clouds forming 50 miles above Earth's polar regions every year. The mission aims to determine why these clouds form and how they change, potentially linked to human activity.
James Webb Space Telescope's 'spine' passes health tests
The James Webb Space Telescope's backplane has passed health tests, withstanding freezing temperatures and operating accurately. The successful test ensures the telescope can handle its space trip and work in space, paving the way for future scientific discoveries.
Dust around nearby star has fluffiness of new-fallen 'powder' snow
The researchers found that the dust grains have a porosity of over 90%, similar to powder snow, allowing them to measure the agglomeration process of interstellar grains. This discovery provides valuable insights into the early days of our planetary system and how dust grains grow from interstellar sizes to macroscopic objects.
ESRF helps reveal the origin of the Solar System
Researchers analyze cometary material from Stardust spacecraft, improving understanding of early solar system chemistry and mixing. ESRF's X-ray beams help determine element distribution without damaging particles.
Stardust findings override some commonly held astronomy beliefs
Scientists have discovered material in comets that originated from the sun's inner solar system, defying a popular notion. The Stardust mission found particles with extreme properties, including one made of calcium-aluminum inclusion and another composed of magnesium olivine.
UC Berkeley researchers developed techniques to pluck comet dust from Stardust collectors
Researchers at UC Berkeley have developed techniques to pluck comet dust from the aerogel collectors used by NASA's Stardust spacecraft. The extracted samples reveal a diverse and unexpected composition of materials, including calcium/aluminum-rich inclusions similar to those found in meteorites.
'Cosmic freezer' yields unique discovery
Researchers at Washington University in St. Louis analyze comet samples and discover a unique result: the presence of 'real' stardust particles older than the sun. This finding provides key insights into the composition and origin of comets, shedding light on their role in the solar system's formation.
Far-out findings -- New analysis suggests planets were formed from a giant mix
Researchers analyzed dust fragments from Comet Wild-2 to gain insights into the early Solar System's formation. The study found diverse mineral compositions in the comet dust, indicating extensive mixing before planet formation, and evidence of surprising variety in cometary composition.
Stardust particles tell story about birth of solar system
The analysis of Stardust particles from comet Wild 2 has revealed clues about the birth of our solar system, challenging some basic theories. The particles contain osbornite, a mineral that forms at high temperatures, indicating a volatile and dynamic environment during the solar system's infancy.
Supernova radioisotopes show sun was born in star cluster, scientists say
Astronomers discover sun was born in a massive star cluster, challenging current theories on planetary formation. The researchers used radioactive isotopes from meteorites to calculate the distance and time of a nearby supernova, suggesting that hundreds or thousands of solar siblings may exist.
Pre-life molecules present in comets
Researchers from the University of Michigan and Harvard-Smithsonian Center for Astrophysics discovered atomic nitrogen in interstellar gas clouds, suggesting pre-life molecules may be present in comets. This finding sheds new light on the early conditions that led to life on Earth.
Forming super-Earths by ultraviolet stripping
Astronomers propose that super-Earths can form around red dwarf stars via ultraviolet stripping, a process previously thought to only create gas giant planets. The new theory suggests that the mass of the central star determines whether a planet forms as a gas giant or a super-Earth.
Floating pile of rubble a pristine record of solar system's history
Asteroid Itokawa is found to be a rubble pile, providing valuable clues on how the planets were formed. The confirmation has significant implications for theories of asteroid evolution and will lead to a better understanding of the early solar system.
Astronomers discover evidence of moonlets in Saturn's rings
Scientists have discovered evidence of moonlets in Saturn's rings, bridging the gap between larger moons and smaller ice particles. This finding supports the theory that Saturn's rings were formed when another object fragmented close to the planet, with the discovery providing insight into the origin of planets.
Comet from coldest spot in solar system has material from hottest places
Astronomers discover high-temperature minerals in comet Wild 2, challenging the formation of crystalline materials. The Stardust mission brings back samples from the coldest spot in the solar system, providing clues about the origin of these materials.
Comet dust from NASA mission under analysis
Comet dust samples collected by the Stardust mission are being studied to determine their mineral composition, providing valuable insights into the formation of the solar system. The samples, which consist of ice, dust, and rock, were analyzed using electron microscopes and other techniques.