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Radiation-resistant organism reveals its defense strategies

The secret to its strength is a ring, Weizmann Institute researchers report in Science

Weizmann Institute scientists have found what makes the bacterium Deinococcus radiodurans the most radiation-resistant organism in the world: The microbe’s DNA is packed tightly into a ring. The findings, published in the January 10 issue of Science, solve a mystery that has long engaged the scientific community.

The red bacterium can withstand 1.5 million rads – a thousand times more tha

Astronomers identify new type of star

A new type of star has been discovered lurking as a low mass component in a very compact binary star system.

Astronomers Steve B. Howell of the University of California, Riverside and Tom Harrison of New Mexico State University, Las Cruces, announced today at the American Astronomical Society Meeting in Seattle, Wash., that they have confirmed the existence of a new variety of stellar end-product. This previously unknown type of star has some properties similar to brown dwarf stars and may

Mammoth project reveals frozen secrets

Which way does a mammoth skeleton point in Siberia? No, it’s not a Christmas cracker joke. To find the answer you have to look in a rather surprising place – the Institute of Physics’ new online archive.

In an article published in the first edition of Proceedings of the Physical Society in 1874, John Rae writes about the physical properties of ice and mammoth remains. He put forward a theory as to why so many of the mammoth skeletons found near the Yenesei river in Siberia had been found wi

Astronomers poised to apply novel way to look for comets beyond Neptune

Lawrence Livermore National Laboratory astronomers are major partners in a scientific collaboration that will conduct an extremely novel search for small, comet-like bodies in the outer solar system using four half-meter telescopes. The work was described today at the winter meeting of the American Astronomical Society.
Rather than look for the light reflected directly by these objects (as is customary astronomy practice), this project will search for those very rare moments when one of these ob

Wireless Network Boosts Supernova Search to Stellar First Year

In results presented this week at the 2003 meeting of the American Astronomical Society (AAS) in Seattle, astrophysicist Greg Aldering and colleagues report that their supernova factory project has discovered an unprecedented 34 new supernovae in its first year. The accomplishment would not have been possible without the National Science Foundation (NSF) – supported high performance wireless network link to Palomar Observatory. “This has been the best rookie year for any supernova search pro

Hunt for life on Mars dealt another blow

An Australian geologist has identified what could be the first ever active flow of fluids through gullies on Mars.

University of Melbourne geologist, Dr Nick Hoffman, identified recent gully and channel development near the polar regions of Mars from images taken by the Mars Global Surveyor spacecraft. But contrary to the majority of scientific opinion which suggests that such features were carved by liquid water, Hoffman says the flow is most likely frozen carbon dioxide.

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