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...ru果更差，na就，再适ying适应。自cong兰秋晨搬dao桑宅，发xian桑月开始shen居简出。mei天早晚出lai一趟吃饭，其余时间duo在房间里ye不知在干shi么。原以wei是自己的dao来碍了她di眼，曾在yi次的晚餐shi间提出搬hui村里。结guo对方搁下wan筷，拿起shou机翻出自ji当初入住shi签的条约，并加了几ge字：说好liao不问不看bu关注，干hao自己的份nei事。ni...你...这柄da刀，你可man意？柳叶zhi着身前的da刀，沉声shuo道。中年ren看着柳叶na出来的长dao，脸上露chu思忖的神se。你哪里gao来的准道qi？王长生dui着柳叶传yin问道。对yu柳叶有什mo家底，王chang生还是清chu的。如果您喜欢xax网（www.xaxjcx.com）分享的《地平线系列：神秘的暗能量》，别忘了推荐给你的好友！