Search results for magnetite grains

Space Exploration Oct 14, 2023

Osiris-Rex: NASA reveals evidence of water and carbon in sample delivered to Earth from an asteroid

On September 24 this year, a NASA capsule parachuted down to Earth carrying a precious cache of material grabbed from an asteroid. The space agency has now revealed images and a preliminary analysis of the space rocks it ...

Planetary Sciences Dec 5, 2022

Impact-induced formation of microscopic magnetite first confirmed in Chang'E-5 lunar soil

A research team led by Prof. Li Yang and Dr. Guo Zhuang from the Institute of Geochemistry of the Chinese Academy of Sciences (IGCAS) conducted in-situ electron microanalysis of spherical iron-sulfide grains in the finest ...

Planetary Sciences Jun 9, 2022

What happened before, during and after solar system formation? Asteroid Ryugu study holds the answers

The Japan Aerospace Exploration Agency's (JAXA) Hayabusa2 mission returned uncontaminated primitive asteroid samples to Earth. A comprehensive analysis of 16 particles from the asteroid Ryugu revealed many insights into the ...

Earth Sciences May 19, 2022

New experiments suggest that nonbiological processes alone may not account for decreased magnetization at oil spill site

In August 1979, an oil pipeline burst near Bemidji, Minn., spraying 1.7 million liters of crude oil onto the ground. Following cleanup, 400,000 liters that had seeped into sediments still remained. Recognizing a unique opportunity, ...

Earth Sciences Nov 22, 2021

Scientist reveals cause of lost magnetism at meteorite site

A University of Alaska Fairbanks scientist has discovered a method for detecting and better defining meteorite impact sites that have long lost their telltale craters. The discovery could further the study of not only Earth's ...

Earth Sciences Jan 19, 2021

Research finds tiny bubbles tell tales of big volcanic eruptions

Microscopic bubbles can tell stories about Earth's biggest volcanic eruptions and geoscientists from Rice University and the University of Texas at Austin have discovered some of those stories are written in nanoparticles.

Earth Sciences May 11, 2020

Scientists reveal solar system's oldest molecular fluids could hold the key to early life

The oldest molecular fluids in the solar system could have supported the rapid formation and evolution of the building blocks of life, new research in the journal Proceedings of the National Academy of Sciences reveals.

Earth Sciences Apr 8, 2020

The existence of a magnetic field beyond 3.5 billion years ago is still up for debate

Microscopic minerals excavated from an ancient outcrop of Jack Hills, in Western Australia, have been the subject of intense geological study, as they seem to bear traces of the Earth's magnetic field reaching as far back ...

Nanomaterials Jul 16, 2019

Magnetite nanowires with sharp insulating transition

Magnetite (Fe3O4) is best known as a magnetic iron ore, and is the source of lodestone. It also has potential as a high-temperature resistor in electronics. In new research led by Osaka University, published in Nano Letters, ...

Nanomaterials Aug 13, 2018

Five ways that natural nanotechnology could inspire human design

Though nanotechnology is portrayed as a fairly recent human invention, nature is actually full of nanoscopic architectures. They underpin the essential functions of a variety of life forms, from bacteria to berries, wasps ...

page 1 from 3