The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it looks like. Now, new simulations may have given them a first glimpse.

NASA believed the galaxy to be empty. There is something startling in it. NASA'S Spitzer Finds Galaxy with Split Personality; ...

Noticed flocks of well-dressed Londoners migrating around the city this week? That’s right, London Fashion Week is back for ...