Articles tagged with Iron Meteorites
Researchers at Göttingen University developed a method to reconstruct the early Earth's atmosphere using fossilized micrometeorites. The study found that intact micrometeorites can preserve reliable traces of oxygen isotopes over millions of years.
A 2.35-billion-year-old meteorite offers fresh insights into the Moon's volcanic history and suggests ongoing internal heat generation processes. The rock's distinct composition provides new constraints on when and how volcanic activity occurred on the Moon.
A new study reveals that first-generation planetesimals in the inner solar system were rich in moderately volatile elements, which were later lost during violent cosmic collisions. This discovery reshapes our understanding of how planets acquired their ingredients.
A new study reveals that a giant meteorite impact, equivalent to four Mount Everests, triggered a tsunami that mixed ocean debris and heated the atmosphere. This led to a rapid recovery of bacterial life, with iron-metabolizing bacteria flourishing in its wake.
Researchers propose that lunar swirls are caused by subsurface magma, which creates a magnetic anomaly. The team's experiments show that ilmenite can react and form iron metal under the right conditions, producing a magnetizing effect.
New research suggests that our infant solar system resembled a doughnut-shaped protoplanetary disk, where asteroids with metal grains rich in iridium and platinum migrated to the outer disk as it rapidly expanded. This explanation contradicts previous findings of concentric ring structures around other stars.
Researchers found that iron meteorites from the inner and outer solar systems had similar amounts of missing iron metal, suggesting that water was present in planetesimals right from the start. This challenges current models, which predict cooler temperatures for the inner solar system or formation further out.
A study of Ryugu samples suggests that micrometeorites from icy celestial bodies in the outer Solar System transported nitrogen compounds to near-Earth regions. This discovery could provide clues about the origins of nitrogen on our planet, potentially serving as a building block for life.
Researchers used the Advanced Photon Source to study asteroid fragments from Ryugu, finding they were made of water and carbon dioxide ice. The analysis suggests the asteroid formed over 4 billion years ago in the outer solar system, with a hydrated interior and dryer surface.
A study of metal-rich asteroids has found that they have surfaces with 85% metal such as iron and nickel, similar to stony-iron meteorites. The research also identified four possible asteroid families in the main asteroid belt, which may hold clues about their origins.
Researchers at UIUC discovered that meteorites become porous when heated, affecting their strength and likelihood to break apart. This discovery will help NASA's Asteroid Threat Assessment Program predict potential damage from larger meteorite impacts.
A team of scientists found that iron pseudocarbynes combine with carbon molecules to form molecular chains. These chains have identical spectra to common carbon molecules, explaining the elusive iron detection.
The newly discovered room in the Pyramid of Cheops contains a mysterious void, leading researchers to speculate about its function and content. The
Recent research reveals that all Bronze Age iron artifacts were made from meteoric iron, a rare and valuable source of the metal. This finding challenges previous theories on the origins of bronze and provides new insights into ancient metalworking practices.
New research suggests that pure iron grains are extremely rare in the universe, contrary to previously thought, and may be forming invisible metal particles. A study published in Science Advances used a rocket-based experiment to simulate the formation of pure iron grains in space, revealing grain formation is highly unlikely.
Researchers capture asteroid magnetic field moments, revealing extended lifetimes and creating mechanisms similar to the Earth's own magnetic field. Ancient meteorites provide a cosmic archaeological mission, shedding light on the magnetic history of asteroids and their impact on the Earth's core future.
Researchers have discovered that ancient Egyptian iron beads were hammered from pieces of meteorites, not iron ore. The findings indicate that metalworkers mastered the smithing of meteoritic iron over 5,000 years ago, enabling the development of iron smelting and replacing copper and bronze as primary metals.
Researchers have found conclusive proof that Ancient Egyptians used meteorites to create symbolic accessories. The evidence comes from a prehistoric iron bead discovered in Egypt, which was dated to around 3350-3600BC. Analysis of the bead's composition confirms its meteorite origins.
Researchers found iron 60, a radioactive sign of an exploding star, in low abundance and uniformly distributed in solar system material. The findings suggest the low levels of iron 60 likely came from long-term accumulation of iron 60 in interstellar medium rather than a nearby cataclysmic event.
A rare ataxite class of meteorite was found to be the material of a 1,000 year-old Buddhist statue, known as the Iron Man, discovered by a Nazi expedition in 1938. The statue is valued at $20,000 due to its rarity and age.
Cyclone Lua brought intense winds and heavy rainfall to northern Australia, with NASA satellites tracking rainfall totals. The storm generated up to 20 inches of rain just off the coast before making landfall, with amounts dropping drastically after the cyclone hit.
Researchers have discovered that a meteorite traveling at a slower velocity than previously thought formed Meteor Crater. The study reveals that atmospheric drag slowed down the fragments, causing them to crumble and slow more, resulting in little to no melting of the surrounding rocks.
Researchers found that meteorites, especially iron meteorites, can provide more phosphorus than naturally occurs on Earth. Phosphorus is essential for biomolecules and energy production in living organisms. The discovery suggests that meteorites may have played a critical role in the evolution of life on Earth.
Polar mesospheric clouds have been found to remove nearly all meteoric iron, a process similar to the depletion of the ozone layer. Laboratory experiments and computer modeling revealed that ice particles on the surfaces of these clouds efficiently uptake iron atoms, causing a local depletion in the metal layer.
Geologists analyzed rare rock samples from California and Oregon, which contain large amounts of osmium, a key element in the Earth's core. The findings suggest that these rocks came from hotspots at the core-mantle boundary, providing valuable clues to the Earth's core composition.
Researchers found a spherical object in the Khohar chondrite containing fine-grained metal aggregate and graphite. The graphite exhibits large D and 15N excesses, suggesting an interstellar origin, and is abundant with coexisting metal particles. These findings provide evidence of interstellar graphite in meteorites.
Scientists from the National Science Foundation and IRIS have ruled out cult activities and nuclear detonations as causes of a 1993 Australian seismic event. They now believe that an iron meteorite of about two meters in diameter could have created the tremors, but no crater has been found.
Researchers analyzed seismic data to determine cause of 1993 event in Australian outback. An iron meteorite over 3 meters in diameter is suggested as possible cause.
Penn State researchers are searching coal mines for fossil meteorites that fell over two million years ago. They use tramp-iron magnets to find ancient iron meteorites, which could provide valuable information about the solar system in the distant past.
Researchers at Penn State University have developed a method to recover fossil iron meteorites from coal using tramp iron magnets. The method involves examining magnetic materials pulled out of coal by these electromagnets, which could potentially yield up to 5 pounds of iron meteorites per year.