Current Meteorites News and Events

Current Meteorites News and Events, Meteorites News Articles.
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An innovative and non-destructive strategy to analyse material from Mars
The UPV/EHU's IBeA research group, which includes experts in Raman spectroscopy, is currently analysing meteorites with the aim of developing non-destructive analytical strategies for upcoming explorations of Mars materials by the Perseverance rover, shortly due to arrive at the red planet. The strategies will also be used to examine materials collected by the Rosalind Franklin rover and returned to Earth following the Mars Sample Return mission, scheduled to commence in 2026. (2021-02-03)

Much of Earth's nitrogen was locally sourced
Scientists show evidence that nitrogen acquired during Earth's formation came from both the inner and outer regions of the protoplanetary disk. The study has implications for signs of potential habitability of exoplanets. (2021-01-21)

Remote sensing data sheds light on when and how asteroid Ryugu lost its water
Rocks on Ryugu, a 'rubble pile' near-Earth asteroid recently visited by Japan's Hayabusa2 spacecraft, appear to have lost much of their water before they came together to form the asteroid, new research suggests. (2021-01-05)

SwRI-led team finds meteoric evidence for a previously unknown asteroid
A Southwest Research Institute-led team of scientists has identified a potentially new meteorite parent asteroid by studying a small shard of a meteorite that arrived on Earth a dozen years ago. The composition of a piece of the meteorite Almahata Sitta (AhS) indicates that its parent body was an asteroid roughly the size of Ceres, the largest object in the main asteroid belt, and formed in the presence of water under intermediate temperatures and pressures. (2020-12-21)

Key building block for organic molecules discovered in meteorites
Scientists from Japan and the USA have confirmed the presence in meteorites of a key organic molecule which may have been used to build other organic molecules, including some used by life. The discovery validates theories of the formation of organic compounds in extraterrestrial environments. (2020-12-07)

Rochester researchers uncover key clues about the solar system's history
Researchers have used magnetism to determine, for the first time, when asteroids that are rich in water and amino acids first arrived in the inner solar system. (2020-12-04)

Chaotic early solar system collisions resembled 'asteroids' arcade game
One Friday evening in 1992, a meteorite ended a more than 150 million-mile journey by smashing into the trunk of a red Chevrolet Malibu in Peekskill, New York. Nearly 30 years later, a new analysis of that same Peekskill meteorite and 17 others by researchers at The University of Texas at Austin and the University of Tennessee, Knoxville, has led to a new hypothesis about how asteroids formed during the early years of the solar system. (2020-12-02)

Ancient zircon minerals from Mars reveal the elusive internal structure of the red planet
Analysis of an ancient meteorite from Mars suggests that the mineral zircon may be abundant on the surface of the red planet. By determining the age and hafnium isotope composition of these zircons, researchers from the University of Copenhagen have shown that a population of these crystals were sourced from the deep interior of Mars. If the researchers are correct, it means that the young zircons contain information about the deep, inaccessible interior of Mars, which provides insights into the internal structure of the planet. (2020-11-17)

SwRI scientist studies tiny craters on Bennu boulders to understand asteroid's age
Last week NASA snagged a sample from the surface of asteroid Bennu, an Empire State Building-sized body that Southwest Research Institute scientists have helped map with nearly unprecedented precision. Using orbital data from the OSIRIS-REx spacecraft, researchers measured centimeter- to meter-sized craters on the boulders scattered around its rugged surface to shed light on the age of the asteroid. (2020-11-10)

New mineral discovered in moon meteorite
The high-pressure mineral Donwilhelmsite, recently discovered in the lunar meteorite Oued Awlitis 001 from Apollo missions, is important for understanding the inner structure of the earth. (2020-11-03)

Water on ancient Mars
A meteorite that originated on Mars billions of years ago reveals details of ancient impact events on the red planet. Certain minerals from the Martian crust in the meteorite are oxidized, suggesting the presence of water during the impact that created the meteorite. The finding helps to fill some gaps in knowledge about the role of water in planet formation. (2020-10-30)

"Fireball" meteorite contains pristine extraterrestrial organic compounds
A fireball meteorite fell onto a frozen lake in Michigan, and since it was quickly collected before getting exposed to liquid water, it gives scientists a glimpse of what space rocks are like when they're still in space. Researchers found that it contains pristine organic compounds that could tell us about the origins of life on Earth. (2020-10-27)

SwRI study offers more complete view of massive asteroid Psyche
A new study authored by Southwest Research Institute planetary scientist Dr. Tracy Becker discusses several new views of the asteroid 16 Psyche, including the first ultra-violet observations. The study, which was published today in The Planetary Science Journal and presented at the virtual meeting of the American Astronomical Society's Division for Planetary Sciences, paints a clearer view of the asteroid than was previous-ly available. (2020-10-26)

A new way of looking at the Earth's interior
Current understanding is that the chemical composition of the Earth's mantle is relatively homogeneous. But experiments conducted by ETH researchers now show that this view is too simplistic. Their results solve a key problem facing the geosciences - and raise some new questions. (2020-10-21)

Ultraviolet shines light on origins of the solar system
In the search to discover the origins of our solar system, an international team of researchers, including planetary scientist and cosmochemist James Lyons of Arizona State University, has compared the composition of the sun to the composition of the most ancient materials that formed in our solar system: refractory inclusions in unmetamorphosed meteorites. (2020-10-19)

Sustainable space management at risk under US-centric policies
''Other nations need to speak up, now,'' argue Aaron Boley and Michael Byers in this Policy Forum, in response to U.S. policymakers' attempts to dominate commercial space mining based on a strategic interpretation of international space law. (2020-10-08)

Planetary astronomer co-authors studies of asteroid as member of NASA's OSIRIS-REx mission
NASA's OSIRIS-REx spacecraft mission's first attempt to pick up the sample is scheduled for Oct. 20, 2020, and the spacecraft is scheduled to return the sample back to Earth on Sept. 24, 2023. In advance of the sample collection, the science team published a set of six papers in Science and Science Advances to share its scientific findings to date while building interest in the upcoming event. (2020-10-08)

SwRI scientists study the rugged surface of near-Earth asteroid Bennu
As the days count down to NASA's OSIRIS-REx spacecraft's Touch-And-Go asteroid sample collection attempt, Southwest Research Institute scientists have helped determine what the spacecraft can expect to return from the near-Earth asteroid Bennu's surface. Three papers published online by Science on Oct. 8 discuss the color, reflectivity, age, composition, origin and distribution of materials that make up the asteroid's rough surface. (2020-10-08)

Moon's magnetic crust research sees scientists debunk long-held theory
New international research into the Moon provides scientists with insights as to how and why its crust is magnetised, essentially 'debunking' one of the previous longstanding theories. (2020-10-07)

Stellar explosion in Earth's proximity
When the brightness of the star Betelgeuse dropped dramatically a few months ago, some observers suspected an impending supernova - a stellar explosion that could also cause damage on Earth. While Betelgeuse has returned to normal, physicists from the Technical University of Munich (TUM) have found evidence of a supernova that exploded near the Earth around 2.5 million years ago. (2020-09-30)

Geoscience: Cosmic diamonds formed during gigantic planetary collisions
Geoscientists from Goethe University have found the largest extraterrestrial diamonds ever discovered - a few tenths of a millimetre in size nevertheless - inside meteorites. Together with an international team of researchers, they have now been able to prove that these diamonds formed in the early period of our solar system when minor planets collided together or with large asteroids. These new data disprove the theory that they originated deep inside planets - similar to diamonds formed on Earth - at least the size of Mercury (PNAS). (2020-09-29)

Phosphine on Venus
An international team of astronomers detected phosphine (PH3) in the atmosphere of Venus. They studied the origin of phosphine, but no inorganic processes, including supply from volcanos and atmospheric photochemistry can explain the detected amount of phosphine. The phosphine is believed to originate from unknown photochemistry or geochemistry, but the team does not completely reject the possibility of biological origin. This discovery is crucial to examine the validity of phosphine as a biomarker. (2020-09-15)

Modern theory from ancient impacts
It is generally accepted that the inner region of the early solar system was subject to an intense period of meteoric bombardment referred to as the late heavy bombardment. However, researchers have found evidence that suggests this period occurred slightly earlier than thought and was less intense but also more prolonged. Such details about this period could impact theories about the early Earth and the dawn of life. (2020-09-15)

Meteorites show transport of material in early solar system
New studies of a rare type of meteorite show that material from close to the Sun reached the outer solar system even as the planet Jupiter cleared a gap in the disk of dust and gas from which the planets formed. The results, published this week in Proceedings of the National Academy of Sciences, add to an emerging understanding of how our Solar System formed and how planets form around other stars. (2020-09-08)

Unexpected abundance of hydrogen in meteorites reveals the origin of Earth's water
Meteorite material presumed to be devoid of water because it formed in the dry inner Solar System appears to have contained sufficient hydrogen to have delivered to Earth at least three times the mass of water in its oceans, a new study shows. (2020-08-27)

Meteorite study suggests Earth may have been wet since it formed
A new study finds that Earth's water may have come from materials that were present in the inner solar system at the time the planet formed -- instead of far-reaching comets or asteroids delivering such water. The findings published Aug. 28 in Science suggest that Earth may have always been wet. (2020-08-27)

Earth may always have been wet
The Earth is the only planet known to have liquid water on its surface, a fundamental characteristic when it comes to explaining the emergence of life. However, its origin is still debated. In the journal Science dated 28 August 2020, scientists from the CNRS and Université de Lorraine contribute to this debate by showing that most of the water present on the Earth today has probably been there right from the very beginning. (2020-08-27)

Surrey academics develop a new method to determine the origin of stardust in meteorites
Scientists have made a key discovery thanks to stardust found in meteorites, shedding light on the origin of crucial chemical elements. (2020-08-11)

Explosive nuclear astrophysics
An international team has made a key discovery related to 'presolar grains' found in some meteorites. This discovery has shed light on stellar explosions and the origin of chemical elements. It has also provided a new method for astronomical research. (2020-08-10)

Iron-rich meteorites show record of core crystallization in system's oldest planetesimals
New work uncovers new details about our Solar System's oldest planetary objects, which broke apart in long-ago collisions to form iron-rich meteorites. Their findings reveal that the distinct chemical signatures of these meteorites can be explained by the process of core crystallization in their parent bodies, deepening our understanding of the geochemistry occurring in the Solar System's youth. (2020-08-03)

How stony-iron meteorites form
Meteorites give us insight into the early development of the solar system. Using the SAPHiR instrument at the Research Neutron Source Heinz Maier-Leibnitz (FRM II) at the Technical University of Munich (TUM), a scientific team has for the first time simulated the formation of a class of stony-iron meteorites, so-called pallasites, on a purely experimental basis. (2020-07-29)

X-rays recount origin of oddball meteorites
X-ray experiments at Berkeley Lab played a key role in resolving the origin of rare, odd meteorites that have puzzled scientists since their discovery a half-century ago. Known as type IIE iron meteorites, they appear to have originated from a parent body that had a composition featuring both fully melted and unmelted parts - other meteorite types display only one composition. (2020-07-27)

An origin story for a family of oddball meteorites
Study suggests a family of rare meteorites likely came from an early planetesimal with a magnetic core. (2020-07-24)

Mammal cells could struggle to fight space germs
The immune systems of mammals - including humans - might struggle to detect and respond to germs from other planets, new research suggests. (2020-07-23)

New insight into the origin of water on the earth
Scientists have found the interstellar organic matter could produce an abundant supply of water by heating, suggesting that organic matter could be the source of terrestrial water. (2020-07-17)

Ancient micrometeoroids carried specks of stardust, water to asteroid 4 Vesta
Researchers at Washington University in St. Louis are the first to study presolar materials that landed on a planet-like body. Their findings may help solve the mystery: where did all the water on Earth come from? (2020-06-09)

Ancient asteroid impacts created the ingredients of life on Earth and Mars
A new study reveals that asteroid impact sites in the ocean may possess a crucial link in explaining the formation of the essential molecules for life. The study discovered the emergence of amino acids that serve as the building blocks for proteins - demonstrating the role of meteorites in bringing life's molecules to earth, and potentially Mars. (2020-06-08)

Class of stellar explosions found to be galactic producers of lithium
A team of researchers, led by astrophysicist Sumner Starrfield of Arizona State University (ASU), has combined theory with both observations and laboratory studies and determined that a class of stellar explosions, called classical novae, are responsible for most of the lithium in our galaxy and solar system. (2020-06-01)

Terrestrial bacteria can grow on nutrients from space
As inevitable fellow travellers on the bodies of astronauts, spaceships, or equipment, terrestrial microorganisms will undoubtedly come into contact with extraterrestrial environments. Researchers from the Radboudumc describe in an article in Astrobiology that bacteria can survive on an 'extraterrestrial diet', which affected their pathogenic potential. (2020-05-26)

Heavy iron isotopes leaking from Earth's core
Earth's molten core may be leaking iron, according to researchers who analyzed how iron behaves inside our planet. (2020-04-13)

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