Climate change and the rise of atmospheric oxygen
Today's climate change pales in comparison with what happened as Earth gave birth to its oxygen-containing atmosphere billions of years ago. view more (2006-03-23)
Nature's process for nitrogen fixation caught in action
Nitrogen gas is converted to ammonia fertilizer by a chemical process that involves high temperature and high pressure. Nature does the same thing at ambient temperature and pressure. The process, called nitrogen fixation, is essential to life as it provides nutrients to plant life. view more (2006-11-10)
Physics World Digest: April 2002 edition
Antique dealers turn to physics If you`ve ever wondered if that old Chinese vase in your loft is a genuine antique, physicist Doreen Stoneham could have the answer. She has set up a company - Oxford Authentication - that uses "thermoluminescence" to distinguish a real T`ang dynasty ceramic from a fake. When a tiny amount of material from the... view more... (2002-03-28)
Mars Express discovers aurorae on Mars
ESA's Mars Express spacecraft has for the first time ever detected an aurora on Mars. This aurora is of a type never previously observed in the Solar System. view more (2005-06-10)
Roses In The Southern Sky
The Wide-Field-Imager at La Silla Unveils Intricate Structures Illuminated by Hot Stars The giant HII nebula N44 The two best known satellite galaxies of the Milky Way, the Magellanic Clouds, are located in the southern sky at a distance of about 170,000 light-years. They host many giant nebular complexes with very hot and luminous stars whose... view more... (2003-11-03)
Direct photon properties reveal secrets of extreme nuclear states
When atomic nuclei are smashed together at great speed, resulting temperatures exceed one trillion degrees, 200 million times hotter than the surface of the sun. view more (2006-04-26)
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