Horizon goes behind the scenes at CERN to follow one of the most epic and expensive scientific quests of all time: the search for the Higgs particle, believed to give mass to everything in our universe. However, the hunt for Higgs is part of a much grander search for how the universe works. It promises to help answer questions like why we exist and is a vital part of a Grand Unified Theory of nature. At the heart of the pursuit of the elusive particle is the same feature that makes snowflakes beautiful and human faces attractive: the simple and enchanting idea of symmetry.-------------（@BBC Two）

每当太阳落山，夜幕降临，坐在大地，仰望星空，就能看到一部史诗巨作在眼前上演，这部巨作拥有数十亿演员——恒星。每一颗都有属于自己的传奇。从尘埃和气体云中孕育，点燃核聚变的火花，度过辉煌灿烂的一生，晚年步入红巨星。之后或是变为白矮星，悄然消失；或是成为超新星，上演宇宙中最壮观的烟火秀，留下中子星，甚至是谜一般的黑洞。在恒星步入死亡的过程中，却悄然点燃了生命的种子，散播到宇宙深处……因为你我，皆为星尘。