Scientists from the OPERA experiment at INFN's Gran Sasso National Laboratory have announced the first direct observation of a neutrino transforming from one type into another. When confirmed by a few more such events, this observation will provide further strong evidence that neutrinos have mass, a phenomenon that remains unexplained by physicists' recipe for understanding the universe, the Standard Model. 
The large image here shows an optical view, with the Digitized Sky Survey, of the Andromeda Galaxy, otherwise known as M31.
This week hundreds of accelerator physicists have gathered in Kyoto, Japan, to take part in the first International Particle Accelerator Conference, taking a step toward the practices of their detector-building colleagues. 
This beautiful composite image shows N49, the aftermath of a supernova explosion in the Large Magellanic Cloud.
Craig Venter and colleagues have achieved a remarkable milestone: they designed a genome, and brought it to life. More specifically, they’ve synthesized a chromosome consisting of over a million DNA base pairs, and implanted it in a bacterial cell to replace the cell’s original genome. That cell then reproduced, giving birth [...]
Scientists of the DZero collaboration at the Department of Energy's Fermi National Accelerator Laboratory announced Friday, May 14, that they have found evidence for significant violation of matter-antimatter symmetry in the behavior of particles containing bottom quarks beyond what is expected in the current theory, the Standard Model of particle physics.
Can you tell a gravitational lens from a spiral galaxy? With an expansion of the Galaxy Zoo citizen science project, you can try your eye at lens identification, thanks in part to the efforts of Phil Marshall at SLAC and Stanford's Kavli Institute for Particle Astrophyics and Cosmology.
At a distance of about 400 million light years from Earth, a massive "wall" of galaxies stretching tens of millions of light years.
This composite image of M82 shows Chandra X-ray Observatory data in blue, optical data from Hubble in green and orange, and infrared data from Spitzer in red.
Two different teams have reported using Chandra observations of galaxy clusters to study the properties of gravity on cosmic scales and test Einstein's theory of General Relativity.