Astronomy

Discovery of the source of the most common meteorites (EurekAlert!)

24 Jul 2008

Astronomy & Astrophysics is publishing the first discovery by T. Mothé-Diniz (Brazil) and D. Nesvorný (USA) of asteroids with a spectrum similar to that of ordinary chondrites, the meteoritic material that most resembles the composition of our Sun. Most of the meteorites that we collect on Earth come from the main belt of asteroids located between Mars and Jupiter [1]. They were ejected from ...

Effect of microstructure on the coercivity of HDDR Nd-Fe-B permanent magnetic alloy (EurekAlert!)

24 Jul 2008

The School of Physics, Shandong University, has shown that the coercivity mechanism of HDDR Nd-Fe-B permanent magnetic alloy is greatly related to its microstructure defect at the grain boundary. The investigation can provide a clear understanding of coercivity mechanism, and hence will be reported in Science in China Series G-Physics, Mechanism and Astronomy.

What Are YOU Doing for the International Year of Astronomy? (Universe Today)

24 Jul 2008

In 1609, Galileo Galilei looked at the heavens through a telescope for the first time, and things on Earth haven't been the same since. To celebrate the 400th anniversary of this advent of scientific discovery and thought, people and organizations from around the globe are coordinating a world-wide, year-long program called the International Year [...]