Current Meteorite News and Events

Current Meteorite News and Events, Meteorite News Articles.
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Life of a pure Martian design
Experimental microbially assisted chemolithotrophy provides an opportunity to trace the putative bioalteration processes of the Martian crust. A study on the Noachian Martian breccia Northwest Africa (NWA) 7034 composed of ancient crustal materials from Mars, led by ERC grantee Tetyana Milojevic from the Faculty of Chemistry of the University of Vienna, now delivered a unique prototype of microbial life experimentally designed on a real Martian material. (2021-02-19)

First humans in Tasmania must have seen spectacular auroras
A small sub-alpine lake in western Tasmania has helped establish that 41,000 years ago Australia experienced the Laschamp geomagnetic excursion and that Tasmanian, Aboriginals, would've seen it. (2021-02-15)

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)

Oldest carbonates in the solar system
A meteorite that fell in northern Germany in 2019 contains carbonates which are among the oldest in the solar system; it also evidences the earliest presence of liquid water on a minute planet. The high-resolution Ion Probe - a research instrument at the Institute of Earth Sciences at Heidelberg University - provided the measurements. (2021-01-20)

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)

When dinosaurs disappeared, forests thrived
To understand how specific ecosystems were affected by the meteorite impact that led to the mass extinction of dinosaurs, a team of McGill scientists has analyzed the microscopic remains of plants from this period. They found that local plant communities and ecosystems experienced a long-term shift towards fewer aquatic plants and an increase in terrestrial plants, including trees such as birches and elms. Changes in rainfall patterns during the extinction event were relatively minor and short-lived. (2020-12-16)

Researchers discover a new superhighway system in the Solar System
Researchers have discovered a new superhighway network to travel through the Solar System much faster than was previously possible. Such routes can drive comets and asteroids near Jupiter to Neptune's distance in under a decade and to 100 astronomical units in less than a century. They could be used to send spacecraft to the far reaches of our planetary system relatively fast, and to monitor and understand near-Earth objects that might collide with our planet. (2020-12-09)

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)

Researchers present wild theory: Water may be naturally occurring on all rocky planets
Life is deeply dependent on water, but where does water come from? Based on new research, researchers from the University of Copenhagen believe it may emerge in connection with the formation of planets. (2020-11-09)

The craters on Earth
A two-volume atlas presents and explains the impact sites of meteorites and asteroids worldwide (2020-11-03)

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)

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 strikes may create unexpected form of silica
When a meteorite hurtles through the atmosphere and crashes to Earth, how does its violent impact alter the minerals found at the landing site? What can the short-lived chemical phases created by these extreme impacts teach scientists about the minerals existing at the high-temperature and pressure conditions found deep inside the planet? New work examining the crystal structure of the silica mineral quartz under shock compression is challenging longstanding assumptions about this ubiquitous material. (2020-08-26)

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)

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)

Research team builds better rock models
Once you crush, cut or fracture a rock, there are no do-overs. It's a fact that means geoscientists have to be particularly careful about which rock samples they can sacrifice to physics experiments versus which ones should stay on the shelf. A team of geoscience researchers from The University of Texas at Austin is working to change that with a new method for creating digital replicas of rock samples that is more accurate and simpler to use than other techniques. (2020-06-08)

Scientist captures new images of Martian moon Phobos to help determine its origins
Christopher Edwards, assistant professor in Northern Arizona University's Department of Astronomy and Planetary Science, just processed new images of the Martian moon Phobos that give scientists insight into the physical properties of the moon and its composition. (2020-06-02)

New evidence shows giant meteorite impacts formed parts of the Moon's crust
New research on a rock collected by the Apollo 17 astronauts has revealed evidence for a mineral phase that can only form above 2300 °C. Such temperatures are uniquely achieved in melt sheets following a meteorite impact, allowing the researchers to link the 4.33-billion-year-old crystal to an ancient collision on the Moon. The study opens the door for many of the more complex rocks on the Moon to have formed in these destructive environments. (2020-05-11)

4-billion-year-old nitrogen-containing organic molecules discovered in Martian meteorites
Scientists exploring Mars and analysing Martian meteorite samples have found organic compounds essential for life: nitrogen-bearing organics in a 4-billion-year-old Martian meteorite. With a new high-spatial resolution in-situ N-chemical speciation technique, they found organic materials--either synthesised locally or delivered during the Noachian--preserved intact in carbonate minerals over a long geological period. Their presence requires abiotic or biotic N-fixation and ammonia storage, suggesting early Mars had a less oxidising environment than today. (2020-04-29)

A Martian mash up: Meteorites tell story of Mars' water history
University of Arizona researchers probed Martian meteorites to reconstruct Mars' chaotic history. Their findings suggest that Mars might not have had a global magma ocean. (2020-03-30)

Astronaut urine to build moon bases
The modules that the major space agencies plan to erect on the Moon could incorporate an element contributed by the human colonizers themselves: the urea in their pee. European researchers have found that it could be used as a plasticizer in the concrete of the structures. (2020-03-27)

The Earth formed much faster than previously thought
By measuring iron isotopes, researchers from the University of Copenhagen have shown that our planet originally formed much faster than previously thought. This finding provides new insights on both planetary formation and the likelihood of water and life elsewhere in the universe. (2020-02-20)

New mathematical model reveals how major groups arise in evolution
Researchers at Uppsala University and the University of Leeds presents a new mathematical model of patterns of diversity in the fossil record, which offers a solution to Darwin's ''abominable mystery'' and strengthens our understanding of how modern groups originate. The research is published in the journal Science Advances. (2020-02-19)

First research results on the 'spectacular meteorite fall' of Flensburg
A fireball in the sky, accompanied by a bang, amazed hundreds of eyewitnesses in northern Germany in mid-September last year. The reason for the spectacle was a meteoroid entering the Earth's atmosphere and partially burning up. Planetologists at Münster University have been studying a part of the meteorite. They found out that the meteorite contains minerals that formed under the presence of water on small planetesimals in the early history of our solar system. (2020-02-17)

Solar wind samples suggest new physics of massive solar ejections
A new study led by the University of Hawai'i (UH) at Mānoa has helped refine understanding of the amount of hydrogen, helium and other elements present in violent outbursts from the Sun, and other types of solar 'wind,' a stream of ionized atoms ejected from the Sun. (2020-02-14)

'Curious and curiouser!'
An unusual chunk in a meteorite may contain a surprising bit of space history, based on new research from Washington University in St. Louis. Presolar grains -- tiny bits of solid interstellar material formed before the sun was born -- are sometimes found in primitive meteorites. But a new analysis reveals evidence of presolar grains in part of a meteorite where they are not expected to be found. (2020-01-28)

New research finds Earth's oldest asteroid strike linked to 'big thaw'
Curtin University scientists have discovered Earth's oldest asteroid strike occurred at Yarrabubba, in outback Western Australia, and coincided with the end of a global deep freeze known as a Snowball Earth. The research, published in the leading journal Nature Communications, used isotopic analysis of minerals to calculate the precise age of the Yarrabubba crater for the first time, putting it at 2.229 billion years old -- making it 200 million years older than the next oldest impact. (2020-01-22)

Meteorite contains the oldest material on Earth: 7-billion-year-old stardust
Scientists have discovered the oldest solid material on Earth: 7-billion-year-old stardust trapped inside a meteorite. (For comparison, the sun is 4.6 billion years old, and the Earth is 4.5.) This stardust provides evidence for a 'baby boom' of new stars that formed 7 billion years ago, contrary to thinking that star formation happens at a steady, constant rate. (2020-01-13)

Shocked meteorites provide clues to Earth's lower mantle
An international team of scientists have completed a complex analysis of a ''shocked meteorite'' and gained new insight into Earth's lower mantle. (2020-01-10)

OSIRIS-REx cameras capture particle ejection from asteroid Bennu
Cameras aboard NASA's OSIRIS-REx spacecraft captured close-up shots of material being ejected from the surface of the near-Earth asteroid Bennu. The images offer a detailed look at small-scale mass loss events on an active asteroid, whereas before, observations have been limited to only the largest phenomena. (2019-12-05)

Meteorite-loving microorganism
The archaeon Metallosphaera sedula can uptake and process extraterrestrial material. This is shown by an international team led by astrobiologist Tetyana Milojevic, who examines microbial fingerprints on meteorite materials. The researchers also conclude that M. sedula colonizes meteorite minerals faster than those of terrestrial origin. The results appear in Scientific Reports. (2019-12-03)

Wolfe Creek Crater younger than previously thought
Wolfe Creek Crater, one of the world's largest meteorite craters, is much younger than previously thought. (2019-11-21)

A new, unified pathway for prebiotic RNA synthesis
Adding to support for the RNA world hypothesis, Sidney Becker and colleagues have presented what's not been shown before -- a single chemical pathway that could generate both the purine and pyrimidine nucleosides, the key building blocks of RNA. (2019-10-03)

African evidence support Younger Dryas Impact Hypothesis
A team of scientists from South Africa has discovered evidence partially supporting a hypothesis that Earth was struck by a meteorite or asteroid 12,800 years ago, leading to global consequences including climate change, and contributing to the extinction of many species of large animals at the time of an episode called the Younger Dryas. (2019-10-02)

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