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Aug 31  Sunspots: the appearance is predictable
In recent years solar photospheric activity (where sunspots form) has been anything but spectacular, and the predictions for the next few years agree that there will be a net decrease in all solar >>>
Aug 30  The sectrets of spiral radio galaxies
There have been some important developments in the study of the exotic category of galaxies that are particularly bright at radio wavelengths due to jets of sub-atomic particles accelerated to >>>
Aug 29  Habitable zones extended by hydrogen
When we talk about the habitable zone of a star, we are talking about the range of radii about the star in which the temperatures would permit the existence of liquid water on the surface of a >>>
Aug 26  Simulated: the evolution of the Galaxy
Two supercomputers, 8 months of analysis, 18.6 million particles to which to apply the laws of gravity and fluid dynamics. All this to simulate, starting from an initial mass of 790 billion solar >>>
Aug 25  Y dwarfs discovered: as cold as us!
The discovery of type Y brown dwarfs, the coldest of all the failed stars, has finally been made official in two articles to be published in The Astrophysical Journal Supplement Series. Brown dwarfs >>>
Aug 24  Terrestrial life on other planetary bodies?
An awful lot has been written about the possibility that life on Earth started somewhere other than on Earth itself. Somewhat less attention has been focused on the inverse possibility, that is >>>
Aug 23  2007 OR10, all but Snow White!
In 2007 a team of astronomers led by Mike Brown (California Institute of Technology, Caltech) discovered a dwarf planet belonging to the Kuiper Belt. It was provisionally called 2007 >>>
Aug 22  Space weather: an important step forward
Researchers led by Craig DeForest of the Southwest Researcher Institute in Boulder, Colorado, have announced, in a NASA press conference, that they have followed the entire path of a solar >>>
Aug 5  96 new open clusters discovered
Since ancient times about 2500 open clusters have been found in our galaxy, but astronomers estimate that the true number could total 30,000. As one might guess, the majority of these are invisible >>>
Aug 4  2010 TK7, an Earth Trojan, for now
It hasn't been so famous since its discovery (in October 2010 by the Wide-field Infrared Survey Explorer satellite), and this is because it appears on the cover of the last July issue of the journal Nature >>>
Aug 3  Hard times for Nemesis
In 1984, the planetologists David Raup and Jack Sepkoski announced that they had identified a periodicity of about 26 million years associated with the 12 mass extinction events that have occurred >>>

 

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