A strange, starless cloud on the edge of a nearby galaxy is forcing astronomers to confront one of the biggest unknowns in ...

New findings suggest that ordinary sound has negative gravitational mass. This is an Inside Science story. (Inside Science) -- The sound of a sonic boom may produce about the same magnitude of ...

A research team led by Prof. Wang Jianjun from the Nanjing Institute of Geography and Limnology of the Chinese Academy of Sciences, has produced a global map depicting the distribution and variation ...