Horizon looks at dark energy - the mysterious force that is unexpectedly causing the universe's expansion to speed up. The effects of dark energy were discovered in 1998 but physicists still don't know what it is. Worse, its very existence calls into question Albert Einstein's general theory of relativity - the cornerstone of modern physics. The hunt for the identity of dark en...展开
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Melony Feliciano Cris Colicchio Alex Olson Alex Hammerli Donna Pastorello Sarah Kuklis Joseph Scotto Stephanie Beauchamp Isa Camyar Kevin Delano Alicia Erlinger Marla Freeman Ashley Rose Folino Paul Faggione Frank Sorgenti 安德鲁·J.韦斯特