The Dark Matter Universe

既然希格斯玻色子——粒子物理学标准模型的最后一部分——已经被发现，粒子物理学家们正转向宇宙，以激发下一个伟大的发现。暗物质的存在是宇宙中最大的谜团之一。在一个星系中，所有可见的物质——恒星和星际气体——都是由原子构成的，然而原子物质平均只占星系总质量的15%。剩下的85%是暗物质。暗物质在宇宙中的存在为星系和恒星的形成提供了宇宙基础。然而，它的粒子物理特性仍然是未知的。

Now that the Higgs boson – the final piece of the Standard Model of particle physics – has been discovered, particle physicists are turning to the cosmos to inspire the next great discoveries. The existence of dark matter is one of the Universe’s greatest mysteries. Within a galaxy, all the visible matter - the stars and interstellar gas - are made from atoms, and yet atomic matter represents only 15%, on average, of the total mass of a galaxy. The remaining 85% is dark matter. Dark matter's presence in the Universe provides the cosmic foundation for galaxies and stars to form. However, its particle physics properties remains as yet unknown.