国家/地区：英国
时长：59分钟
语言/字幕：英语
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,…
Horizon looks at dark energy - the mysterious force that is unexpectedly causing the universe's expansion …
