Psychological Test: Do You See the Glass Half-Empty or Half-Full?

Optimism and pessimism are a window through which we see the world. The attitude we adopt towards people, events, and situations affects our goals, behavior, and progress in every aspect of our lives. Do you tend to see the glass half-empty or half-full? To find it out, read these statements…

Gamma-Rays at the Center of Our Galaxy May Come from Dark Matter

New data from NASA's Fermi Space Telescope show that the center of our galaxy produces far greater amounts of high gamma-ray energy. The origin of these gamma-rays could possibly be explained by the presence of the mysterious dark matter. A team of scientists led by astrophysicist Dan Hooper of the…