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Dec. 22  Almost solitary giant stars
There is a new theory to explain why Iapetus, one of Saturn's moons, has a shape similar to a walnut. This moon, with a diameter of 1470 km, has an enormous ridge, about 100 km wide and up to 20 >>>
Dec. 21  IceCube completed
The largest neutrino observatory in the world has just been completed. It's called IceCube, and is made up of 5504 sensors, located within, and on the surface, of a 1 cubic kilometre volume of ice. The >>>
Dec. 20  Was the ridge on Iapetus a moon?
There is a new theory to explain why Iapetus, one of Saturn's moons, has a shape similar to a walnut. This moon, with a diameter of 1470 km, has an enormous ridge, about 100 km wide and up to 20 >>>
Dec. 17  The Earth: 25 Gauss in the outer core
Using radio observations of distant quasars to measure tiny variations in the tilt of the Earth's rotation axis, Bruce A. Buffett (University of California, Berkeley) has succeeded in measuring the strength of the >>>
Dec. 16  2008 TC3: ureilites and much more
No less than 20 articles were published yesterday, in the journal Meteoritics and Planetary Science, based on studies of the meteorite fragments found in the Nubian desert, of the small asteroid 2008 TC3. This >>>
Dec. 15  A cryovolcano on Titan?
At the American Geophysical Union meeting, underway in San Francisco, a new 3D map of a mountainous structure on the surface of Titan, with clear similarities to terrestrial volcanoes, has been presented. >>>
Dec. 14  Voyager 1 and the end of the solar wind
It is now certain that Voyager 1 has reached a region beyond the sphere of influence of the solar wind. The first signs of this historic milestone were seen last June, when the probe was 17 billion kilometres from >>>
Dec. 13  596 Scheila: asteroid or comet?
An asteroid 113 km in diameter, 596 Scheila, and belonging to the main belt 2.92 astronomical units from the Sun, has undergone a cometary type outburst. The first to notice the outburst was Steve Larson, of >>>
Dec. 11  The quasi-Moon of Venus
Recently, astronomers have tried to determine the precise rotation period and composition of the moon of Venus. On the 8th December the results were finally announced by Michael Hicks, an >>>
Dec. 09  The double quasar as seen by e-MERLIN
Many would have been disappointed by the much anticipated announcement by NASA of the discovery of a new kind of bacteria in Mono Lake, California. The reason is that what has been found is >>>
Dec. 07  HR 8799e, the planet of disagreement
The first extrasolar planetary system to be directly photographed was that around HR 8799 Pegasi, an A-type star (so bigger than our Sun) 130 light years away, with at least three Jupiter type planets, >>>
Dec. 06  Many more red dwarfs in the ellipticals
Another important discovery from the study of elliptical galaxies: after the confirmation that some of these galaxies actively form new stars, a group of astronomers from the Harvard-Smithsonian Center >>>
Dec. 03  Discovered (extra) terrestrial bacteria
Many would have been disappointed by the much anticipated announcement by NASA of the discovery of a new kind of bacteria in Mono Lake, California. The reason is that what has been found is >>>
Dec. 02  The atmosphere of a super-Earth
In the next issue of Nature the results of the analysis of the atmosphere of the planet GJ 1214b are to be published. This planet, an example of a so-called super-Earth, was discovered in December 2009, and is >>>
Dec. 01  SO2 on Venus: mystery solved
In 2008, ESA's Venus Express probe discovered a layer of sulphur dioxide in the atmosphere of Venus at an altitude between 90 and 110 km. Until then, the molecule had only been observed at lower altitudes, >>>


 

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