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New Technique Creates Stronger, Lightweight Magnesium Alloys

Researchers from North Carolina State University have developed a new technique for creating stronger, lightweight magnesium alloys that have potential structural applications in the automobile and aerospace industries.

Engineers constantly seek strong, lightweight materials for use in cars and planes to improve fuel efficiency. Their goal is to develop structural materials with a high “specific strength,” which is defined as a material’s strength divided by its density. In other words, specific strength measures how much load it can carry per unit of weight. (more…)

Titanium Paternity Test Fingers Earth as Moon’s Sole Parent

By Guest PostMarch 30, 2012Scienceapollo, chemical analysis, cosmic rays, DNA, earth, gadolinium, Galaxy, isotopic composition, junjun zhang, lunar material, mars, meteorite, moon, NASA, nicolas dauphas, refractory, samarium, steve koppes, subatomic variations, theia, titanium, titanium isotope, university of chicago

A new chemical analysis of lunar material collected by Apollo astronauts in the 1970s conflicts with the widely held theory that a giant collision between Earth and a Mars-sized object gave birth to the moon 4.5 billion years ago.

In the giant-collision scenario, computer simulations suggest that the moon had two parents: Earth and a hypothetical planetary body that scientists call “Theia.” But a comparative analysis of titanium from the moon, Earth and meteorites, published by Junjun Zhang, graduate student in geophysical sciences at the University of Chicago, and four co-authors indicates the moon’s material came from Earth alone. (more…)

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New Technique Creates Stronger, Lightweight Magnesium Alloys

Titanium Paternity Test Fingers Earth as Moon’s Sole Parent