Menu
Modern science
Soil Microbes Accelerate Global Warming

Bold New Approach to Wind 'Farm' Design May Provide Efficiency Gains

Soft Memory Device Opens Door to New Biocompatible Electronics

Most Elliptical Galaxies Are 'Like Spirals'

New Planets Feature Young Star and Twin Neptunes

Editing the Genome: Scientists Unveil New Tools for Rewriting the Code of Life

High Social Rank Comes at a Price, Wild Baboon Study Finds

Fossil Forensics Reveals How Wasps Populated Rotting Dinosaur Eggs

Monitoring Cellular Interactions at Nano-Scale in More Detail Than Ever Before

Non-Africans Are Part Neanderthal, Genetic Research Shows

Making Blood Sucking Deadly for Mosquitoes

Rising Oceans: Too Late to Turn the Tide?

Newly Developed Fluorescent Protein Makes Internal Organs Visible

NASA's Dawn Spacecraft Returns Close-Up Image of Giant Asteroid Vesta

Bacteria Use Batman-Like Grappling Hooks to 'Slingshot' On Surfaces, Study Shows

Mysterious Fossils Provide New Clues to Insect Evolution

Twisted Tale of Our Galaxy's Ring: Strange Kink in Milky Way

Engineering Excitable Cells for Studies of Bioelectricity and Cell Therapy

Ancient Footprints Show Human-Like Walking Began Nearly 4 Million Years Ago

Memories May Skew Visual Perception

Movement of Black Holes Powers Quasars, the Universe's Brightest Lights

First Artificial Neural Network Created out of DNA: Molecular Soup Exhibits Brainlike Behavior

Dolphins' 'Remarkable' Recovery from Injury Offers Important Insights for Human Healing

Cosmological Evolution of Dark Matter Is Similar to That of Visible Matter

Exoplanet Aurora: An Out-Of-This-World Sight

First Opal-Like Crystals Discovered in Meteorite
Scientists have found opal-like crystals in the Tagish Lake meteorite, which fell to Earth in Canada in 2000. This is the first extraterrestrial discovery of these unusual crystals, which may have formed in the primordial cloud of dust that produced the sun and planets of our solar system 4.6 billion years ago, according to a report in the Journal of the American Chemical Society.

Katsuo Tsukamoto and colleagues say that colloidal crystals such as opals, which form as an orderly array of particles, are of great interest to for their potential use in new electronics and optical devices. Surprisingly, the crystals in the meteorite are composed of magnetite, which scientists thought could not assemble into such a crystal because magnetic attractions might pack the atoms together too tightly. "We believe that, if synthesized, magnetite colloidal crystals have promising potential as a novel functional material," the article notes.

The formation of colloidal crystals in the meteorite implies that several conditions must have existed when they formed. "First, a certain amount of solution water must have been present in the meteorite to disperse the colloidal particles," the report explains. "The solution water must have been confined in small voids, in which colloidal crystallization takes place. These conditions, along with evidence from similar meteorites, suggest that the crystals may have formed 4.6 billion years ago."

The authors acknowledge funding from the Japan Society for the Promotion of Science, the Tohoku University Global COE Program, and the Center for Interdisciplinary Research Tohoku University.

Для печати

New Material Lets Electrons 'Dance' and Form New State

Cod Resurgence in Canadian Waters

Fundamental Matter-Antimatter Symmetry Confirmed

First True View of Global Erosion

NASA's WISE Finds Earth's First 'Trojan' Asteroid

Engineers Fly World's First 'Printed' Aircraft

Scientist Converts Human Skin Cells Into Functional Brain Cells

Rainforest Plant Developed 'Sonar Dish' to Attract Pollinating Bats

Sea Level Rise Less from Greenland, More from Antarctica, Than Expected During Last Interglacial

How Bats Stay On Target Despite the Clutter

Fall of the Neanderthals: Volume of Modern Humans Infiltrating Europe Cited as Critical Factor

Largest-Ever Map of Plant Protein Interactions

Some Plants Duplicate Their DNA to Overcome Adversity


Menu
Diamonds Pinpoint Start of Colliding Continents

Researchers Identify Seventh and Eighth Bases of DNA

Fool's Gold Gives Scientists Priceless Insight Into Earth's Evolution

Astronomers Discover Largest and Most Distant Reservoir of Water Yet

Major Step Toward Creating Faster Electronics Using Graphene

New Photonic Crystals Have Both Electronic and Optical Properties

Epigenetic 'Memory' Key to Nature Versus Nurture

Climate Change to Increase Yellowstone Wildfires Dramatically

Retinal Cells Thoughts to Be the Same Are Not, Biologist Says

Minority Rules: Scientists Discover Tipping Point for the Spread of Ideas

Mitochondria Share an Ancestor With SAR11, a Globally Significant Marine Microbe

Drug Shown to Improve Sight for Patients With Inherited Blindness

Elliptical Galaxies Are Not Dead

Hubble Constant: A New Way to Measure the Expansion of the Universe

Enceladus Rains Water Onto Saturn

Engineers Develop One-Way Transmission System for Sound Waves

Researchers Graft Olfactory Receptors Onto Nanotubes

New Invisibility Cloak Hides Objects from Human View

Bionic Microrobot Mimics the 'Water Strider' and Walks On Water

How Memory Is Lost: Loss of Memory Due to Aging May Be Reversible

Reservoirs of Ancient Lava Shaped Earth

Wave Power Can Drive Sun's Intense Heat

Social Deficits Associated With Autism, Schizophrenia Induced in Mice With New Technology

Tundra Fires Could Accelerate Climate Warming

Chandra X-Ray Observatory Images Gas Flowing Toward Black Hole