Rare metallic asteroids might have erupted molten iron

The metallic asteroid Psyche has mystified scientists because it is less dense than it should be, given its iron-nickel composition. Now, a new theory could explain Psyche’s low density and metallic surface. Unlike most asteroids, Psyche appears to be composed largely of iron and nickel instead of rocky rubble. Metal-rich asteroids are thought to have … Read more

Meteorite strikes made life on Earth possible

geoMeteorites from the far reaches of the Solar System delivered large amounts of water, carbon and volatile substances to the Earth. Only then could the Earth host life. Dr. María Isabel Varas-Reus, Dr. Stephan König, Aierken Yierpan and Professor Dr. Ronny Schönberg from Tübingen University’s Isotope Geochemistry Group, and Dr. Jean-Pierre Lorand from the Université … Read more

What gives meteorites their shape? New research uncovers a ‘Goldilocks’ answer

Meteoroids coming from outer space are randomly shaped, but many of these, which land on earth as meteorites, are found to be carved into cones. Scientists have now figured out how the physics of flight in the atmosphere leads to this transformation. The progression, discovered through a series of replication experiments in New York University’s … Read more

Laboratory analysis of meteorites have shown evidence that asteroids migrated towards the asteroid belt from the outer solar system

The international research team including W. Fujiya (Faculty of Science, Ibaraki University), P. Hoppe (Max Planck Institute for Chemistry in Germany), T. Ushikubo (Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology: JAMSTEC), and Y. Sano (Atmosphere and Ocean Research Institute, The University of Tokyo) estimated the amounts of dry ice … Read more

Meteors help Martian clouds form

Astronomers have long observed clouds in Mars’ middle atmosphere, which begins about 18 miles (30 kilometers) above the surface, but have struggled to explain how they formed. Now, a new study, which will be published on June 17 in the journal Nature Geoscience, examines those wispy accumulations and suggests that they owe their existence to a … Read more