From the center of the galaxy Ghost beams of gamma rays rising

The center of the Milky Way shows little activity in contrast. It was not always so peaceful. New evidence of ghost beams of gamma rays suggests that the central black hole of our galaxy was much more active in the past.

"These jets are faint ghost or just a sequel to what existed for millions of years," said Meng Su, an astronomer at the Harvard-Smithsonian Center for Astrophysics (CfA), and author of a new article in the Astrophysical Journal. "But it reinforces the evidence that there was an active galactic nucleus in the relatively recent past of the Milky Way," he added.

A dying star points its gun gamma rays Sun

A star located 7,000 light years from Earth will generate a flow of poisonous gamma rays and is aim it seems that to our solar system, according to a team of physicists and astronomers. Within a few hundred thousand years, in short, as the clocks of cosmologists-Rayet star Wolf 104 (WR104), actually more of a binary system of two stars that revolve around a common center of gravity, will explode violently in a supernova

except it will not do since most huge stars, according to Peter Tut hill, a researcher at the School of Physics, University of Sydney (Australia), published this month in the important Astrophysical Journal work of several years leading a team of researchers.